Jobs for .Net Developer

C#/.Net Developer

OverviewSyms Strategic Group (SSG) is seeking a talentedC#/.Net Developer .Location: RemoteDepartment: Veterans Affairs (VA)Type: Full TimeMin. Experience: ExperiencedSecurity Clearance Level: Public Trust (MBI)Military Veterans are highly encouraged to apply!Essential Duties and ResponsibilitiesPerform technical planning, high-level and detailed requirements definition, test planning and execution (including use cases, test procedures, and test data), software systems integration, and technical support for software systems and subsystems.Perform software system product services, including concept design, test, installation, operation, maintenance, and disposal.Serve as an active member of the software development team participating in daily stand-ups.Utilize full-stack development expertise that ranges from development of .NET back-end applications using C#, unit testing, testing with NUnit or other tools, and deployment using CI/CD pipelines.Ensure the performance, quality, and responsiveness of applications.Provide development support (as needed) for solutions deployed to production.Implement long-term solutions and building blocks within the Agile framework for improved reusability.Interface with the stakeholders for project requirements.Apply and promote good software engineering practices such as test automation, modularization, and simplification.Collaborate and coordinate with colleagues on various solutions and problems.Document software designs, which may include design diagrams, data flow diagrams, software module descriptions, etc.Use Integrated Development Environment (IDE) tools including Visual Studio, Azure DevOps, and Git.Required Skills and ExperienceExpertise in .NET framework and .NET Core, with a strong understanding of C#.Proficiency in developing back-end applications using MVC architecture and .NET Core.Strong knowledge of Object-Oriented Programming (OOP) and design patterns.Experience with RESTful APIs and other APIs.Proficiency in database design and development, including working with SQL Server and Entity Framework.A familiarity with cloud platforms (e.g., Microsoft Azure and AWS) and services.Experience with version control systems (e.g., Git and TFS/TFVC).An understanding of CI/CD practices and tools (e.g., AWS CodePipeline, CodeBuild, and CodeDeploy).Knowledge of unit testing frameworks and tools (e.g., NUnit, xUnit, and MSTest).Proficiency in using development tools like Visual Studio and Visual Studio Code.Excellent problem-solving and analytical skills.Strong communication and interpersonal abilities.Ability to work independently and as part of a team.Attention to detail and commitment to producing high-quality software.Ability to mentor and provide technical guidance to junior developers.Ability to prioritize tasks and manage time effectively.Experience with Agile development methodologies (e.g., Scrum and Kanban).Familiarity with DevOps practices and infrastructure as code (IaC).Strong understanding of security best practices for web applications and APIs.Ability to conduct code reviews and provide constructive feedback.Experience with performance tuning and optimization of applications.Experience with third-party libraries, SDKs, and APIs relevant to .NET development.Professional CertificationsNone requiredYears of Professional ExperienceFive (5) or more years of experience in software development using .NET technologies. A proven track record of working on complex software projects and leading development initiatives. Experience with designing, developing, and deploying enterprise-level applications.Desired experienceElectronic Data Interchange X.12 (EDI) Medical ClaimsX.12 medical claims (837, 834, 277, etc)Knowledge of microservices architecture and containerization technologies (e.g. Kubernetes, Amazon ECS, and Amazon EKS).Formal EducationBachelor’s Degree in Computer Science, Electronics Engineering, or other engineering or technical discipline is required with eight (8) or more years of experience; Master’s Degree in Computer Science, Electronics Engineering, or other engineering or technical discipline along with five (5) or more years of experience; Ph.D. in Computer Science, Electronics Engineering, or other engineering or technical discipline along with three (3) or more years of experience.Citizenship RequirementU.S. Citizenship required for this specific opportunity.Security Clearance RequirementsMust possess or qualify for a Public Trust (MBI).CRITICAL NOTESSSG will not make assumptions regarding your qualifications. Your answers to the mandatory screening questions must be supported by the information on your resume. Applications with inconsistencies will not be considered.Recruiters or Third parties will not be considered.This is a 100% U.S. based remote position. However, candidates from CA, CO, IL, NJ, or NY will not be considered.This is a W2 position.All interviews will be conducted on Microsoft Teams with your camera on; there will be no exceptions.As part of our screening process, you will be requested to provide a link to your LinkedIn profile.U.S. Citizenship is required for this specific opportunity. Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information and be able to obtain a government-granted security clearance. Individuals may also be subject to a background investigation including, but not limited to criminal history, employment and education verification, drug testing, and creditworthiness.Syms Strategic Group, LLC is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, marital status, disability, veteran status, sexual orientation, or genetic information.#J-18808-Ljbffr

Dynamic Environment

Android Developer

Technology Advancement Group Ashburn, VA

Who We Are:Welcome to TAG, a revolutionary force in defense technology for over 30 years, leading unprecedented advancements in PNT technologies. Our history is a tapestry of resilience and innovation, shaping us into a company that is not just simply expanding, but developing professionally at every level. We are a team of technical experts who thrive on challenges, boldly combining technologies to create groundbreaking PNT advancements. Our crew of technical experts aren't afraid to try audacious solutions, embracing failure as a necessary part of our learning process, so that we can build our clients customized solutions. As we embark on this exciting new phase as the sole source provider on DoD contracts, we are seeking passionate individuals ready to join our journey of growth and professionalization.Who You Are:Someone with a high degree of ownership—You don't need to be told to improve a system or to search for areas we can optimize, you're already mapping it out in your mind. You understand your department and processes better than anyone else.GSD—You get stuff done. You don't waste time "admiring the problem" and instead you get to work. You aren't intimidated at the prospect of work that must be done.Curiosity—You're the type of person who loves to ask "Why?" You want to understand how each part interacts to make up the whole.Mentorship—You care deeply about being a part of a team and helping others succeed. You are passionate about uplifting everyone.We are seeking a highly motivated and self‑driven Android Developer to join our team. This role involves developing and maintaining Android applications that interface with hardware systems using various communication protocols. The ideal candidate is a proactive problem solver with strong troubleshooting skills and excellent communication abilities.$120,000 - $155,000 a yearKey ResponsibilitiesDesign, develop and maintain Android applicationsBuild and optimize applications that interface with external hardware systemsCollaborate with cross‑functional teams including hardware engineers and product managersDiagnose and resolve complex technical issues across software and hardware layersOptimize application performance, reliability, and responsivenessWrite clean, maintainable, and well‑documented codeParticipate in code reviews and contribute to continuous improvement of development processesRequired QualificationsProven experience in Android development with strong proficiency in Kotlin and JavaDeep understanding of Android SDK, frameworks, and application architectureImplement and manage communication between Android devices and hardware using protocols such as Serial, I2C, and SPISolid debugging and troubleshooting skills, especially in hardware‑software integration scenariosAbility to work independently and take initiative with minimal supervisionStrong verbal and written communication skillsPreferred Qualifications (Nice to Have)Experience with GNSS/GIS, navigation and location‑based technologiesExperience working with embedded systems or IoT devicesExperience working with sensor inputs (accelerometer, gyroscope, magnetometer, etc.)Experience with Android NDK or low‑level system programmingFamiliarity with Linux‑based systems or embedded platformsExperience with version control systems (Git)Understanding of secure communication practicesKey TraitsSelf‑starter with a proactive mindsetStrong analytical and problem‑solving abilitiesDetail‑oriented and quality‑focusedEffective collaborator and communicator#J-18808-Ljbffr

Best Match

Databricks Developer

Leidos Ashburn, WV

DescriptionThe Homeland Sector within Leidos is seeking a Databricks Developer to design, develop and architect enterprise reporting solutions for critical systems supporting the Passenger Systems Program Directorate (PSPD) within Customs and Border Protection (CBP). PSPD supports the Department of Homeland Security (DHS) and CBP critical missions, specifically screening and processing travelers at the ports of entry (POEs) into the United States. This position is responsible for ensuring high data quality, robust architecture, and efficient development practices. The ideal candidate will have deep expertise in data warehouse concepts and Databricks, and will drive best practices in data engineering and reporting.This position REQUIRES the candidate to be in Ashburn, VA, twice a weekKey ResponsibilitiesDesign and architect scalable enterprise reporting solutions using Databricks and data warehouse technologies.Develop and optimize ETL pipelines, data models, and reporting frameworks.Implement and monitor data quality controls, ensuring accuracy and consistency across datasets.Collaborate with stakeholders to translate business requirements into technical solutions.Lead code reviews, enforce development standards, and mentor junior developers.Troubleshoot and resolve issues related to data integration, processing, and reporting.Maintain documentation for architecture, design, and operational procedures.Required Skills & Qualifications10 years’ experience in databases such as Oracle, PostgreSQL, Aurora, BigDataMinimum 5 years of experience in Software development should include the following technologies: Oracle & SQL3+ years of experience in DataLake/DataWarehouse conceptual design, implementation, case studies, and performance tuning.Must be able to maintain and obtain a CBP Background Investigation prior to startMust be a US citizenDeep knowledge of AWS Cloud/BigDataStrong PL/SQL and SQL experience, also Postgres SQLKnowledge of ETL processesStrong hands-on experience with Databricks (Spark, Delta Lake, notebooks, clusters).Deep understanding of data warehouse concepts, dimensional modeling, and ETL processes.Proficiency in SQL, Python, and/or Scala for data engineering tasks.Experience with cloud platforms (preferably AWS) and integrating Databricks with cloud data services.Software development experience in an Agile/SecDevOps environment with proven ability to deliver on commitments.Preferred QualificationsExperience with CBPCBP Full BIIf you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.Original PostingFor U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.Pay RangePay Range $131,300.00 - $237,350.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.About LeidosLeidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.Pay and BenefitsPay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.Securing Your DataBeware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected] you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.#J-18808-Ljbffr

Content Developer

Leidos Inc Ashburn, VA

DescriptionLeidos is seeking an experienced Content Developer to join our team on a highly visible cyber security single-award IDIQ vehicle. Duties include proactively searching for threats. Inspect traffic for anomalies and new malware patterns. Investigate and analyze logs. Develop custom content within the Splunk SIEM using advanced SPL language and data models or other network security tools to detect threats and attacks against the department. SIEM Content Developers participate in briefings to provide expert guidance on new threats and will act as an escalation point for analysts. The analyst may also be required to author reports and/or interface with customers for ad-hoc requests. In addition, the threat detection engineer may be asked to participate in discussions to make recommendations on improving SOC visibility or process.Primary ResponsibilitiesCapture use cases from subscribers or other team members and develop correlation rulesUtilize knowledge of latest threats and attack vectors to develop Splunk correlation rules for continuous monitoringDevelop, manage, and maintain Splunk data modelsReview logs to determine if relevant data is present to accelerate against data models to work with existing use casesDevelop custom regex to create custom knowledge objectsDevelop custom SPL using macros, lookups, and network security signatures such as SNORT and YARADevelop custom dashboards and reports for customer stakeholdersTrain and mentor junior staffBasic QualificationsBachelor's Degree in Computer Science, Engineering, Information Technology, Cybersecurity, or related field and 12+ years of experience or MS Degree and 10 years of experience. In addition, at least eight (8) years of experience in incident detection and response, malware analysis, or cyber forensicsExtensive experience working with various security methodologies and processesAdvanced knowledge of TCP/IP protocols, experience configuring and implementing various technical security solutions, extensive experience providing analysis and trending of security log data from a large number of heterogeneous security devicesExpert knowledge in two or more of the following areas related to cybersecurity: Vulnerability Assessment, Intrusion Prevention and Detection, Access Control and Authorization, Policy Enforcement, Application Security, Protocol Analysis, Firewall Management, Incident Response, Web-filtering, Advanced Threat ProtectionExperience developing advanced correlation rules utilizing tstats and data models for cyber threat detectionExperienced with creating and maintaining Splunk knowledge objectsExperienced managing and maintaining Splunk data modelsExperience creating regex for pattern matchingExperience implementing security methodologies and SOC processesPreferred QualificationsExperience with cloud (e.g. o365, Azure, AWS, etc) security monitoring and familiar with cloud threat landscapeCompleted Splunk Advanced Searching and Reporting trainingExperience developing custom scripts using pythonSplunk certificationsTS/SCI Clearance preferredCommitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.#J-18808-Ljbffr

Software Developer

Via Logic LLC Ashburn, VA

Leidos is seekingSoftware Developersto join theAir Traffic Business Area within the Homeland Sector , supporting the development of theAlaska Automation Capability (AAC) . AAC is part of the FAA’s broader initiative to modernize legacy flight service systems, replacing aging infrastructure with a scalable, cloud-based platform designed to improve safety and operational efficiency, particularly in remote and high-dependency aviation environments like Alaska. AAC is a mission‑critical, future‑ready, cloud‑based solution providing safety‑critical flight services to the pilot community.As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud‑native capabilities. You will work alongside cross‑functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety‑critical environment.In this position, you will design and implement software solutions independently while working closely with systems engineering, product delivery, and DevSecOps teams. The primary focus is on developing containerized applications within anAgile/SAFe environment . This position supports government programs and requires the ability toobtain and maintain a favorable Public Trust investigation .Primary ResponsibilitiesResponsible for software development activities both individually and as a member of a team including writing, testing, debugging, and maintaining source code within an Agile environment.Actively participate in daily stand‑ups, Release Planning, and other related team activities.Write and execute unit and functional tests.Troubleshoot and participate in the resolution of technical issues in lab and operational environments.Provide support as needed for system engineering, test engineering, and system owner teams.Basic QualificationsBachelor’s degree in computer science or a related field with 2-4 years of relevant experience or a Master’s degree with less than 2 years of experience.Experience with Java programming language.Experience with React.Experience with Web development and commonly used front‑end tools and languages (HTML, CSS, JavaScript).Experience with Linux.Experience with version control systems such as Git or Subversion.Experience with common development tools and IDEs (Eclipse, VS Code, etc.).Knowledge of AI‑assisted software development tools and workflows (i.e. Claude Code, Codex, etc.).Knowledge of Cloud‑based systems.Knowledge of unit testing tools such as Junit and Mockito.Understanding of sound software development principles and practices.Ability to plan and prioritize personal tasking and be able to communicate effectively verbally and in writing.Independent thinker, capable of performing high quality work, both independently and with a team in a fast‑moving environment.Ability to obtain SF‑85 Public Trust suitability determination.US citizenship required.Preferred QualificationsKnowledge of or experience working within the Agile/SAFe framework.Knowledge of or experience with RESTful API, JSON, XML, XSD.Knowledge of or experience with Spring Framework, Spring Security, and Spring Boot.Knowledge of or experience with Python programming language.Knowledge of or experience with Ansible playbooks and YAML.Knowledge of or experience with Linux shell scripting.Knowledge of DevSecOps practices and CI/CD pipelines.Knowledge of or experience with MongoDB.Knowledge of air traffic control and flight services.Commitment to Non‑DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.#J-18808-Ljbffr

Senior Remote C#/.NET Developer for VA Programs

Syms Strategic Group, LLC Ashburn, VA

Syms Strategic Group, LLC is seeking a talented C#/.Net Developer for a remote position. The role includes responsibilities like software system integration, developing .NET back-end applications, and ensuring application performance. Candidates should have five or more years of experience in software development, particularly with .NET technologies, and a Bachelor's Degree in Computer Science. Ideal applicants will thrive in an Agile environment and have strong problem-solving skills. Military veterans are encouraged to apply.#J-18808-Ljbffr

Full Stack Developer

CACI Ashburn, GA

Job Title: Full Stack DeveloperJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: NoneEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Local* * *The OpportunityCACI is currently looking for a Full Stack Developer with agile methodology experience to join our BEAGLE (Border Enforcement Applications for Government Leading-Edge Information Technology) Agile Solution Factory (ASF) Team supporting Customs and Border Protection (CBP) client located in Northern Virginia! Join this passionate team of industry-leading individuals supporting the best practices in Agile Software Development for the Department of Homeland Security (DHS).As a member of the BEAGLE ASF Team, you will support the men and women charged with safeguarding the American people and enhancing the Nation’s safety, security, and prosperity. CBP agents and officers are on the front lines, every day, protecting our national security by combining customs, immigration, border security, and agricultural protection into one coordinated and supportive activity.ASF programs thrive in a culture of innovation and are constantly seeking individuals who can bring creative ideas to solve complex problems, both technical and procedural at the team and portfolio levels. The ability to be adaptable and to work constructively with a technically diverse and geographically separated team is crucial. You should have worked with or have a strong interest in agile software development practices and delivering deployable software in short sprints.ResponsibilitiesServe as an Agile Scrum team member providing software development and maintenance for the delivery of releasable software in short sprint cycles. Responsible for activities associated with delivery of software solutions associated with customer-defined systems and software projects by working in close collaboration with software developers/engineers, stakeholders, and end users within Agile processes. Responsible for:Designing, developing and implementing custom software and database application capabilities for a variety of legacy and modernized systems with limited oversightActing as a member of a product team supporting teammates and collaborating with a do what it takes attitude to ensure product and team successProviding improvements to the product(s) being supportedActively participate in release and sprint planning, artifact creation, sprint testing, regression testing, demonstrations and retrospectives and solution releasesSupporting release planning with conceptual design and development / refinement of software engineering guidelinesAnalyzing complex project-related problems and creating innovative solutions involving, scheduling, technology, methodology, tools and solution componentsEnsuring product quality and timeliness of work, providing advice and guidance, resolving problems to meet objectives, and providing periodic performance reportsProviding mentoring to junior members of the teamQualificationsRequired:Must be a U.S. Citizen with the ability to pass CBP background investigation, criteria include but are not limited to:3 year check for felony convictions1 year check for illegal drug use1 year check for misconduct such as theft or fraudCollege degree (B.S.) in Computer Science, Software Engineering, Information Management Systems or a related discipline. Equivalent professional experience will be considered in lieu of degreeProfessional Experience: at least seven (7) years related technical experience, with design, development and implementation in a Windows EnvironmentLocal candidates must be available to work a hybrid schedule with onsite requirements in Ashburn, VA.Experience with Java; Familiarity with any of the following: Spring, Spring boot, Hibernate (or other ORM), JAX-RS, JSON, Web-Services (JAX-WS or JAX-RS), Eclipse, Gradle,YamlAngular 2+, HTML5, JavaScript and CSS3Java Junit based unit testingMicro services architecture and developmentWorking on unusually complicated problems and providing solutions that are highly creative and ingenious, exhibiting ingenuity, creativity, and resourcefulnessActing independently to expose and resolve problemsExperience with source code control systems and concurrent development workflows (Git preferred)Experience using Oracle databasesExperience with database designAbility to apply estimation techniques to software development effortsWorking knowledge of and ability to assist others in the use of software engineering tools to support process improvementExcellent written and verbal communication skillsStrong collaboration skills and desire to work within a teamUnderstanding of all elements of the software development life cycle, including planning, development, requirements management, CM, quality assurance, and release managementHighly responsible, team-oriented individual with very strong work ethic and a self-starterDesired:Technical Certifications, such as OCAJP; OCPJP; OCE, OCM; CSM. Ability to apply advanced principles, theories, and concepts, and contribute to the development of innovative principles and ideasAdditionally, familiarity with any of the following is highly desirable: application security, automated testing, AWS/Cloud, JiraWhat You Can ExpectA culture of integrity.At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.An environment of trust.CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.A focus on continuous growth.Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.Pay RangeThere are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.The proposed salary range for this position is:$103,800 - $218,100All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.#J-18808-Ljbffr

Principal Software Developer

Leidos Inc Ashburn, VA

DescriptionLeidos is seekingPrincipal Software Developers to join the Air Traffic Business Area within the Homeland Sector , supporting the development of the Alaska Automation Capability (AAC) . AAC is part of the FAA's broader initiative to modernize legacy flight service systems, replacing aging infrastructure with a scalable, cloud-based platform designed to improve safety and operational efficiency-particularly in remote and high-dependency aviation environments like Alaska. AAC is a mission-critical, future-ready, cloud-based solution providing safety-critical flight services to the pilot community.As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native capabilities. You will work alongside cross-functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety-critical environment.In this position, you will design and implement software solutions independently while working closely with systems engineering, product delivery, and DevSecOps teams. The primary focus is on developing containerized applications within an Agile/SAFe environment. This position supports government programs and requires the ability to obtain and maintain a favorable Public Trust investigation.Primary ResponsibilitiesResponsible for software development activities both individually and as a member of a team including writing, testing, debugging, and maintaining source code within an Agile environment. Work to achieve key project/program objectives.Use AI-assisted development tools to accelerate coding, refactoring, debugging, and test creation.Develop solutions to highly complex issues and problems that impact multiple areas of disciplines.Actively participate in Agile scrum ceremonies and other related team activities.Write and execute unit and functional tests.Troubleshoot and participate in the resolution of technical issues in lab and operational environments.Provide support as needed for system engineering, test engineering, and system owner teams.Ability to communicate with executive leadership (internally or client) regarding matters of significant importance to the organization/project.Basic QualificationsBachelor's degree in Computer Science or a related field with 12-15 years of relevant experience or a Master's degree with 10-13 years of experience. May also possess a Doctorate.In-depth knowledge of Java with substantial hands‑on programming experienceIn-depth experience with Web development and commonly used front‑end tools and languages (React, HTML, CSS, JavaScript)Extensive experience with unit testing tools such as Junit and MockitoSignificant experience with RESTful API, JSON, XML, XSDSignificant experience with Spring Framework, Spring Security, and Spring BootSignificant experience with LinuxSignificant experience with version control systems such as Git or SubversionExperience with common development tools and IDEs (Eclipse, VS Code, etc.)Experience working within the Agile Scrum frameworkUnderstanding of sound software development principles and practicesAbility to effectively communicate verbally and in writingCapable of leading and managing work of other technical staff that has significant impact on project results and outputsAbility to obtain SF-85 Public Trust (Tier 2) suitability determinationUS citizenship requiredPreferred QualificationsExperience with AI-assisted coding (Claude Code, Codex etc.)Experience with microservices and cloud-based environmentsKnowledge of or experience with Python programming languageKnowledge of or experience with Ansible playbooks and YAMLKnowledge of or experience with Linux shell scriptingKnowledge of or experience with MongoDBKnowledge of air traffic control and flight servicesPay RangePay Range $131,300.00 - $237,350.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.Pay and BenefitsPay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.#J-18808-Ljbffr

Full Stack Developer

Niyam IT Ashburn, VA

About Niyam IT, Inc. (Niyam)Niyam IT was founded in 2007 by a group of consultants who shared a unique vision: a technology company steeped in orderly process yet driven by passion and innovation. Over the following decade, we fine‑tuned our craft and built an impressive track record of successful outcomes, securing our reputation as the go‑to provider of smart, innovative solutions. Today, Niyam is at the forefront of the industry, leading the way in crafting mission‑critical technologies for Emergency Preparedness & Response, Natural Resource Management, Law Enforcement & Justice, Health IT, and Global Citizen Services.Join us in creating a workplace where innovation, diversity, and well‑being thrive. Your journey at Niyam IT awaits.Niyam is seeking an experienced Full‑Stack Developer to support one of our federal clients. The Full‑Stack Developer will be responsible for designing, developing, and implementing custom software and database solutions to support both legacy and modernized systems. This role involves working as a key member of a product team, actively contributing to planning, development, testing, and release activities. The developer will analyze complex technical challenges and create innovative solutions that improve product performance, scalability, and maintainability. The ideal candidate is a highly motivated professional with strong expertise in both front‑end and back‑end technologies, excellent problem‑solving skills, and the ability to mentor junior team members while ensuring project quality and timely delivery.Roles and ResponsibilitiesDesign, develop, and implement custom software and database application capabilities across various legacy and modernized systems.Participate fully in the software development lifecycle, including release and sprint planning, testing, demonstrations, and retrospectives.Develop high‑quality, maintainable code using modern frameworks and practices.Create RESTful APIs and microservices using Java Spring Boot and integrate them with responsive Angular front‑end components.Transform mockups and UI designs into functional, user‑centered interfaces integrated with backend services.Analyze and solve complex technical problems involving system architecture, performance, and security.Ensure application quality, scalability, and maintainability through code reviews, performance optimization, and adherence to best practices.Provide technical guidance, mentoring, and support to junior developers and teammates.Collaborate closely with product owners, project managers, and cross‑functional teams to achieve project goals.Participate in continuous improvement of software engineering processes, tools, and standards.Support release planning activities and contribute to software engineering guidelines and documentation.Provide periodic reports on development progress and quality metrics.Qualifications And Education RequirementsUS Citizenship with ability to successfully complete a federal background investigation.Bachelor’s degree in Computer Science, Information Systems, Software Engineering, or related field (equivalent practical experience may be considered).Minimum of seven (7) years of experience in software design, development, and implementation within a Windows or cloud‑based environment.Demonstrated expertise in:PostgreSQL, Java, Spring Boot, Angular, and microservices architectureAWS and cloud‑based developmentHTML, CSS, TypeScript, JavaScript, and Angular MaterialRESTful API design and integrationSource control and concurrent workflows (Git preferred)Strong understanding of Object‑Oriented Design (OODD) and Service‑Oriented Architecture (SOA) principles.Experience with SQL or PL/SQL databases such as Oracle, MySQL, or PostgreSQL.Solid understanding of all elements of the software development lifecycle (SDLC), including planning, development, configuration management, QA, and release management.Preferred SkillsTechnical Certifications such as AWS Certified Developer, AWS Certified Solutions Architect, or Oracle Certified Professional (OCP) Java.Familiarity with ETL tools, Kafka, or other messaging technologies.Knowledge of application security, automated testing, UML, or state management libraries (e.g., NGRX, NGXS).Experience with DevOps tools and CI/CD pipeline implementation.Understanding of system architecture concepts including scalability, reliability, and maintainability.Application Deadline: This position will be posted for a minimum of 2 business days or until a sufficient candidate pool has been collected. Job posting may come down early due to volume of applicants.Niyam IT, Inc. is an Equal Opportunity (“EEO”) Employer. All qualified applicants will receive consideration without regard to race, color, creed, religion, sex, sexual orientation, gender identity, pregnancy, marital status, partnership status, age, citizenship status, veteran or military status, medical condition, genetic information, national origin, disability, unemployment status or any other characteristic prohibited by federal, state and/or local laws. If you require a reasonable accommodation due to a disability to complete your application, or if you face challenges using our online application system and need an alternative way to apply, please reach out to us at +1 703.429.2450 or email [email protected].#J-18808-Ljbffr

Principal Software Developer

Leidos Ashburn, VA

Leidos is seeking Principal Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems. This work aligns with the FAA’s broader initiative to modernize legacy flight service capabilities, replacing aging infrastructure with scalable, cloud-based platforms designed to improve safety and operational efficiency—particularly in remote and high-dependency aviation environments. These efforts focus on delivering mission-critical, future-ready solutions that provide safety-critical flight services to the pilot community.Please note, this exciting opportunity is currently unfunded and is anticipation of future work.As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native capabilities. You will work alongside cross-functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety-critical environment. In this position, you will design and implement software solutions independently while working closely with systems engineering, product delivery, and DevSecOps teams. The primary focus is on developing containerized applications within anAgile/SAFe environment.This position supports government programs and requires the ability toobtain and maintain a favorable Public Trust investigation.Primary ResponsibilitiesResponsible for software development activities both individually and as a member of a team including writing, testing, debugging, and maintaining source code within an Agile environment. Work to achieve key project/program objectives.Use AI-assisted development tools to accelerate coding, refactoring, debugging, and test creation.Develop solutions to highly complex issues and problems that impact multiple areas of disciplines.Actively participate in Agile scrum ceremonies and other related team activities.Write and execute unit and functional tests.Troubleshoot and participate in the resolution of technical issues in lab and operational environments.Provide support as needed for system engineering, test engineering, and system owner teams.Ability to communicate with executive leadership (internally or client) regarding matters of significant importance to the organization/project.Basic QualificationsBachelor’s degree in Computer Science or a related field with 12-15 years of relevant experience or a Master’s degree with 10-13 years of experience. May also possess a Doctorate.In-depth knowledge of Java with substantial hands‑on programming experienceIn-depth experience with Web development and commonly used front‑end tools and languages (React, HTML, CSS, JavaScript)Extensive experience with unit testing tools such as Junit and MockitoSignificant experience with RESTful API, JSON, XML, XSDSignificant experience with Spring Framework, Spring Security, and Spring BootSignificant experience with LinuxSignificant experience with version control systems such as Git or SubversionExperience with common development tools and IDEs (Eclipse, VS Code, etc.)Experience working within the Agile Scrum frameworkUnderstanding of sound software development principles and practicesAbility to effectively communicate verbally and in writingCapable of leading and managing work of other technical staff that has significant impact on project results and outputsAbility to obtain SF-85 Public Trust (Tier 2) suitability determinationUS citizenship requiredPreferred QualificationsExperience with AI-assisted coding (Claude Code, Codex etc.)Experience with microservices and cloud-based environmentsKnowledge of or experience with Python programming languageKnowledge of or experience with Ansible playbooks and YAMLKnowledge of or experience with Linux shell scriptingKnowledge of or experience with MongoDBKnowledge of air traffic control and flight servicesCommitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.Pay Range: $131,300.00 - $237,350.00.#J-18808-Ljbffr

Principal Software Developer

Via Logic LLC Ashburn, VA

Leidos is seekingPrincipal Software Developersto join theAir Traffic Business Area within the Homeland Sector , supporting the development of theAlaska Automation Capability (AAC) . AAC is part of the FAA’s broader initiative to modernize legacy flight service systems, replacing aging infrastructure with a scalable, cloud-based platform designed to improve safety and operational efficiency-particularly in remote and high-dependency aviation environments like Alaska. AAC is a mission-critical, future-ready, cloud-based solution providing safety-critical flight services to the pilot community.As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native capabilities. You will work alongside cross-functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety-critical environment.In this position, you will design and implement software solutions independently while working closely with systems engineering, product delivery, and DevSecOps teams. The primary focus is on developing containerized applications within anAgile/SAFe environment.This position supports government programs and requires the ability toobtain and maintain a favorable Public Trust investigation.Primary ResponsibilitiesResponsible for software development activities both individually and as a member of a team including writing, testing, debugging, and maintaining source code within an Agile environment. Work to achieve key project/program objectives.Use AI-assisted development tools to accelerate coding, refactoring, debugging, and test creation.Develop solutions to highly complex issues and problems that impact multiple areas of disciplines.Actively participate in Agile scrum ceremonies and other related team activities.Write and execute unit and functional tests.Troubleshoot and participate in the resolution of technical issues in lab and operational environments.Provide support as needed for system engineering, test engineering, and system owner teams.Ability to communicate with executive leadership (internally or client) regarding matters of significant importance to the organization/project.Basic QualificationsBachelor’s degree in Computer Science or a related field with 12-15 years of relevant experience or a Master’s degree with 10-13 years of experience. May also possess a Doctorate.In-depth knowledge of Java with substantial hands‑on programming experienceIn-depth experience with Web development and commonly used front‑end tools and languages (React, HTML, CSS, JavaScript)Extensive experience with unit testing tools such as Junit and MockitoSignificant experience with RESTful API, JSON, XML, XSDSignificant experience with Spring Framework, Spring Security, and Spring BootSignificant experience with LinuxSignificant experience with version control systems such as Git or SubversionExperience with common development tools and IDEs (Eclipse, VS Code, etc.)Experience working within the Agile Scrum frameworkUnderstanding of sound software development principles and practicesAbility to effectively communicate verbally and in writingCapable of leading and managing work of other technical staff that has significant impact on project results and outputsAbility to obtain SF‑85 Public Trust (Tier 2) suitability determinationUS citizenship requiredPreferred QualificationsExperience with AI-assisted coding (Claude Code, Codex etc.)Experience with microservices and cloud-based environmentsKnowledge of or experience with Python programming languageKnowledge of or experience with Ansible playbooks and YAMLKnowledge of or experience with Linux shell scriptingKnowledge of or experience with MongoDBKnowledge of air traffic control and flight servicesPay Range:$131,300.00 - $237,350.00Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.#J-18808-Ljbffr

Work Life Balance

Full Stack Developer

Trillion Technology Solutions, Inc Ashburn, VA

The position is focused on delivering performance-based IT services and repeatable solutions. Our team is looking for a developer that can support applications in a cloud-based, large-scale enterprise environment with the goal of learning new technologies to optimize efficiency and improve performance. As such, this individual must be able to manage assigned tasks, solve technical problems, and work well individually and in small to medium-sized teams.This government position REQUIRES US Citizenship and to be in Ashburn, VA, twice a week.Primary ResponsibilitiesLearn and support the implementation of workflow and rules technology integration across multiple applications.Manage assigned tasks to completion within a team of 15 developers.Identify and resolve technical issues that arise.Work independently.Employ ingenuity and creativity to develop new technical solutions and systems to achieve functional objectives. Communicate with internal team members across multiple areas and client team members.Research, evaluate, and stay current on emerging tools, techniques, and technologies including cloud services.Basic QualificationsKnowledge of workflows and rules engines.Experience in Java.Experience with agile-based implementations.Strong communication skills with ability to interact effectively across multiple teams.Preferred Qualifications2 years of experience in implementing software solutions.5 years of experience in the software industry.Knowledge of PostgreSQL and CloudNative technologies.Experience evaluating business needs and requirements to identify appropriate solutions, and ability to resolve difficult technical issues.Experience applying a continuous integration/deployment approach to project or program delivery.Familiarity with AI concepts.Experience with Redis/Elasticache implementations.DHS/CBP Public Trust Clearance.Experience in the following tools and/or technologies.JDK21, gRPC, Agile modern best‑practices.WebServices including REST and SOAP interface development.JavaScript.React/Angular.JS.Git.Harness CI/CD.AWS EKS.Messaging solutions for app‑DB and app‑app interfaces.Trillion is an equal opportunity employer. Applicants are considered for positions without regard to race, religion, gender, native origin, age, disability, or any other category protected by applicable federal, state, or local law.#J-18808-Ljbffr

Full Stack Developer

CACI International Inc Ashburn, VA

Job TitleFull Stack DeveloperJob CategoryInformation TechnologyTime TypeFull timeMinimum Clearance Required to StartNoneEmployee TypeRegularPercentage of Travel RequiredUp to 10%Type of TravelLocalThe OpportunityCACI is currently looking for a Full Stack Developer with agile methodology experience to join our BEAGLE (Border Enforcement Applications for Government Leading-Edge Information Technology) Agile Solution Factory (ASF) Team supporting Customs and Border Protection (CBP) client located in Northern Virginia! Join this passionate team of industry-leading individuals supporting the best practices in Agile Software Development for the Department of Homeland Security (DHS).As a member of the BEAGLE ASF Team, you will support the men and women charged with safeguarding the American people and enhancing the Nation’s safety, security, and prosperity. CBP agents and officers are on the front lines, every day, protecting our national security by combining customs, immigration, border security, and agricultural protection into one coordinated and supportive activity.ASF programs thrive in a culture of innovation and are constantly seeking individuals who can bring creative ideas to solve complex problems, both technical and procedural at the team and portfolio levels. The ability to be adaptable and to work constructively with a technically diverse and geographically separated team is crucial. You should have worked with or have a strong interest in agile software development practices and delivering deployable software in short sprints.ResponsibilitiesServe as an Agile Scrum team member providing software development and maintenance for the delivery of releasable software in short sprint cycles. Responsible for activities associated with delivery of software solutions associated with customer- defined systems and software projects by working in close collaboration with software developers/engineers, stakeholders, and end users within Agile processes.Designing, developing and implementing custom software and database application capabilities for a variety of legacy and modernized systems with limited oversight.Acting as a member of a product team supporting teammates and collaborating with a do-what-it-takes attitude to ensure product and team success.Providing improvements to the product(s) being supported.Actively participate in release and sprint planning, artifact creation, sprint testing, regression testing, demonstrations and retrospectives and solution releases.Supporting release planning with conceptual design and development/refinement of software engineering guidelines.Analyzing complex project-related problems and creating innovative solutions involving scheduling, technology, methodology, tools and solution components.Ensuring product quality and timeliness of work, providing advice and guidance, resolving problems to meet objectives, and providing periodic performance reports.Providing mentoring to junior members of the team.QualificationsRequired:Must be a U.S. Citizen with the ability to pass CBP background investigation, criteria include but are not limited to:3-year check for felony convictions1-year check for illegal drug use1-year check for misconduct such as theft or fraudCollege degree (B.S.) in Computer Science, Software Engineering, Information Management Systems or a related discipline. Equivalent professional experience will be considered in lieu of degree.Professional Experience: at least seven (7) years related technical experience, with design, development and implementation in a Windows Environment.Local candidates must be available to work a hybrid schedule with onsite requirements in Ashburn, VA.Experience with Java; familiarity with any of the following: Spring, Spring Boot, Hibernate (or other ORM), JAX-RS, JSON, Web-Services (JAX-WS or JAX-RS), Eclipse, Gradle, Yaml.Angular 2+, HTML5, JavaScript and CSS3.Java JUnit based unit testing.Micro services architecture and development.Working on unusually complicated problems and providing solutions that are highly creative and ingenious, exhibiting ingenuity, creativity, and resourcefulness.Acting independently to expose and resolve problems.Experience with source code control systems and concurrent development workflows (Git preferred).Experience using Oracle databases.Experience with database design.Ability to apply estimation techniques to software development efforts.Working knowledge of and ability to assist others in the use of software engineering tools to support process improvement.Excellent written and verbal communication skills.Strong collaboration skills and desire to work within a team.Understanding of all elements of the software development life cycle, including planning, development, requirements management, CM, quality assurance, and release management.Highly responsible, team-oriented individual with very strong work ethic and a self-starter.Desired:Technical Certifications, such as OCAJP; OCPJP; OCE, OCM; CSM. Ability to apply advanced principles, theories, and concepts, and contribute to the development of innovative principles and ideas.Additionally, familiarity with any of the following is highly desirable: application security, automated testing, AWS/Cloud, Jira.What You Can ExpectA culture of integrity.At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.An environment of trust.CACI values the unique contributions that every employee brings to our company and our customers – every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.A focus on continuous growth.Together, we will advance our nation’s most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground – in your career and in our legacy.Pay RangeThere are a host of factors that can influence final salary, including but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.The Proposed Salary Range For This Position Is103,800 - 218,100CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.#J-18808-Ljbffr

Dynamic Environment

AI/ML Developer

Unissant Ashburn, VA

Unissant, Inc. delivers innovative capabilities to the agencies that keep our nation healthy and safe. We apply our domain expertise, data acumen, and technology know-how to achieve breakthrough results for our clients. Working collaboratively, we advance missions and careers through a focus on honesty, integrity, and dependability. We continuously look for talent excited to join that effort.We are seeking anArtificial Intelligence/Machine Learning Developerto join our team and support our federal customer.Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to classified information. This is a highly technical position; individuals will be screened by peers in a technical review of skills and experience.Essential Duties And ResponsibilitiesThis is a client-facing position working on-site as per the requirements established by the DHS customer.Develop, train, and deploy advanced AI/ML and Gen‑AI models.Design and implement innovative AI solutions to address complex business challenges using techniques such as natural language processing and large language models.Optimize model performance, ensuring accuracy, efficiency, and scalability.Develop and maintain user‑friendly AI applications and interfaces, including chatbots, virtual assistants, and generative content tools.Collaborate with cross‑functional teams to integrate AI solutions into existing systems and workflows.Stay up to date with the latest advancements in AI/ML and emerging technologies, such as generative AI and reinforcement learning.Conduct research and experiments to explore new AI techniques and applications, including prompt engineering, Advanced RAGs and fine‑tuning LLMs.Ensure compliance with data privacy and security regulations, especially when dealing with sensitive data and generative AI outputs.This role will be responsible for briefing the benefits and constraints of technology solutions to technology partners, stakeholders, team members, and senior levels of management.Work Experience And Job Skills3+ years of experience in the Information Technology field focusing on AI/ML engineering projects, MLOps and DevSecOps and technical architecture specifically.Proficiency in developing, deploying, and fine‑tuning generative AI models, including large language models (LLMs).Strong proficiency in programming languages such as Python, R, Java and C/C++ (optional).Experience with machine learning and generative AI frameworks.Experience with natural language processing techniques (e.g., text classification, language generation).Solid understanding of any of the cloud platforms (e.g., AWS, Azure, Google Cloud Platform) and deployment strategies.Solid understanding of MLOps and DevSecOps practices for deploying AI‑ML models and applications.Proficiency in any front‑end development technologies (e.g., React, Angular, Vue.js, HTML, CSS, JavaScript).Knowledge of database systems (e.g., SQL, NoSQL, Vector Database, Graph Database) and data warehousing concepts.An understanding and competency surrounding data storage, accesses, and loading.Databases: PostgreSQL, NoSQL, Vector Databases, Graph Databases, etc.ETL/ELT ConceptsData warehouse conceptsSQLCompetency in data exploration, analytics, and feature engineering (Python Specific).Pandas / NumPy / Polars / PySparkPlotly / Matplotlib (some form of data visualization)Data encoding / normalizing / regularizing / etc.Understanding of Deep learning concepts and architectures like CNNs, RNNs, LSTM, and GANs and ability to apply to real world data sets and problems.Proficiency in ML Modeling - Scikit‑Learn, Tensorflow, Keras, Pytorch.Proficiency in NLP Tools SpaCy, ThinC, Gensim.Knowledge of Gen‑AI Tools Hugging Face models, OpenAI models, Grok.General competency in various ML disciplines like Classification, Forecasting, Transformers, Generative, Anomaly Detection and Deep Learning.Enthusiastic, proactive, positive attitude with great listening skills, high integrity, and the ability to work effectively in a team environment.Adaptability to changing priorities and a willingness to learn and grow are essential.Excellent organizational skills, and ability to effectively manage concurrent projects.Comprehensive problem‑solving skills with exceptional attention to detail.Ability to learn, evolve, think creatively and proactively.Able to work under pressure (at times) and to be extremely flexible with changing priorities.Ability to work independently and in a team setting, take ownership of and complete relatively complex tasks, effectively using available resources, as needed, with minimal guidance.EducationBachelor's Degree in Computer Science, Information Technology Management or Engineering is preferred. Alternative work‑related experience, Military Duty, and/or specialized or higher education may be substituted.Certificates, Licenses And RegistrationsThis federal program requires the candidates to be a United States Citizen.Must have an active DHS clearance.Any related systems engineering, or related technical certifications are desired.AWS/Azure/Google Cloud Platform AI/ML certifications are preferred but not required.Communication SkillsMust have excellent written and verbal communication skills.Ability to convey technical information to non-technical individuals.Demonstrated experience communicating effectively across internal and external organizations.Must work well in a matrixed team environment.TravelOn-site in Ashburn, VA.Environmental RequirementsMainly sedentary; in an office environment.May be required to lift up to ten (10) pounds.Flexible in working extended hours.The above statements are intended to describe the general nature and level of work being performed by the individual(s) assigned to this position. They are not intended to be an exhaustive list of all duties, responsibilities, and skills required. Unissant management reserves the right to modify, add, or remove duties and to assign other duties as necessary. In addition, where applicable and available, reasonable accommodation(s) may be made to enable individuals with disabilities to perform essential functions of this position.Candidate(s) will be required to go through pre‑employment screening.Unissant, Inc. is a proud Equal Opportunity Employer! (EOE; M/F/Disability/Vets)#J-18808-Ljbffr

Work Life Balance

Full Stack Developer

Leidos Ashburn, VA

Leidoshas a new and exciting opportunity for aFull Stack Developerin ourNational Security Sector's (NSS) Cyber & Analytics Business Area (CABA) . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. AtLeidos , we offercompetitive benefits , including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.Join us and make a difference in National Security!Job DescriptionAs a Full Stack Developer on this program, you will have the opportunity to build strong systems, software, and cloud environments and provide operations and maintenance for critical systems. The candidate will provide technical support in the design, development, implementation and testing of customer tools and applications. Based in a DevOps framework, this role participates in delivering major deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, architecture and design, coding and unit testing.Primary ResponsibilitiesParticipate in software programming initiatives to support innovation and enhancement, using Java, JavaScript, Python, SpringBoot, HibernateAssist with developing software system validation and testing methods using Junit and KatalonAssist with developing and integrate custom developed software solutions to leverage automated deployment technologies leveraging an Atlassian tool suite like JIRA and Confluence to track activitiesDevelop, prototype and deploy solutions within Commercial Cloud Solutions leveraging infrastructure platform services creating innovative solutions to meet the technical needs of customers.Analyze (though proof of concept, performance, and end-to-end testing) and effectively coordinate infrastructure needs driven by developed software to meet customer mission needsSupport the Agile software development lifecycle following Program SAFe practices while coordinating closely with team members, Product Owners and Scrum Masters to ensure User Story alignment and implementation to customer use casesDocument and perform systems software development, including deployment of build artifacts across different environments leveraging GitFlow constructs and using industry leading DevOps tools like GitHub, Jenkins, and Unix bash scriptingBasic QualificationsProficient experience with common Agile practices, service-orientated environments, and development practicesProficient experience with Java, Angular, Spring and C2S and the software development lifecycle, with experience delivering within DevOps toolsets/practicesDirect experience utilizing software testing performance tools, such as Junit or Katalon and scripting languages, such as Python, and Bash while working in an Agile development environmentProficient experience developing in Commercial Cloud Platforms (ex, AWS, Google Cloud, Azure) and leveraging cloud data services (ex: S3, RDS, EFS)Proficient experience using version control and issue/problem tracking systemsBachelor’s degree with 4 or more years of prior relevant experience or Master’s with 2 or more years of relevant experience. Additional years of experience may be substituted in lieu of a degree.To be considered must have an active TS/SCI with polygraph security clearancePreferred QualificationsExperience with structured analysis and design methodologiesExperience working on the customer's systemsUnderstanding of the customer's system development policiesCABARESTONCome break things (in a good way). Then build them smarter.We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”Original Posting:July 31, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.Pay Range:Pay Range $85,150.00 - $153,925.00 The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.#J-18808-Ljbffr

Full-Stack Developer

Novul Solutions Ashburn, GA

Ashburn, United States | Posted on 12/18/2025We’re seeking a highly capable and forward-thinking Full‑Stack Developer to join a high‑impact team supporting mission‑critical systems for the U.S. Department of Homeland Security (DHS). In this role, you’ll design and build intelligent, scalable web applications using modern frameworks such as React, Next.js, NestJS, and MongoDB, while also integrating cutting‑edge AI capabilities like Retrieval‑Augmented Generation (RAG) and prompt engineering to deliver contextual, dynamic features.You’ll play a key role in architecting and delivering innovative solutions that fuse traditional development with next‑gen AI experiences.Key ResponsibilitiesDesign and develop scalable, performant full‑stack applications using React, Next.js, NestJS, and MongoDBArchitect and implement AI‑driven features including RAG pipelines, LLM integrations, and retrieval chainsTune prompt templates, embeddings, and contextual data flows to optimize AI outputBuild secure, maintainable RESTful and GraphQL APIsCollaborate with designers, PMs, and data scientists to turn complex requirements into working featuresEnsure security, performance, and stability across frontend and backend servicesParticipate in peer code reviews, automated testing, and CI/CD pipeline enhancementsStay informed on modern frameworks, AI integration techniques, and best practicesRequirementsRequired Qualifications3–5 years of experience in Full‑Stack DevelopmentDemonstrated experience building and deploying RAG‑based AI systems (e.g., LLM APIs, embedding models, vector databases)Working knowledge of prompt engineering techniquesSolid understanding of API design (REST & GraphQL), authentication, and security best practicesExperience with Git, Docker, and cloud services (AWS, GCP, or Azure)Preferred QualificationsHands‑on experience with LangChain, LlamaIndex, or similar frameworksFamiliarity with vector databases such as Pinecone, Weaviate, or MilvusCI/CD and DevOps experience in Agile/Scrum environmentsPrior experience supporting DHS or federal agenciesCore BenefitsPaid Time Off PTO):TEN (10) Paid days off & FIVE (5) Floating days off.Holidays: 11 Paid Holidays. Flex time can be utilized instead of holiday time usage.Payroll: Paid Bi‑Monthly.401(k): Partnered with the SECOND LARGEST Retirement plan provider in the U.S. Guaranteed 3% match. Eligibility – 21 years of age or older, after 3 months of employmentIndividual or company‑wide performance and recognition awards (QuarterlyUNITED HEALTHCARE PPO, extensive national coverage.Eligible on the first of the month, immediately after the start date.Submit the enrollment form within 30 days of your start date otherwise, you will have to wait until October for the new year enrollment.Quality of Life BenefitsTraining & Career Development Reimbursement of Tuition and training needed to support career development.$150 monthly reimbursement contribution paid monthly towards parking expenses.Receipts must be submitted by the close of business on the 25th of each month.Reimbursements will be paid on the first payroll AFTER reimbursements are submitted each month.#J-18808-Ljbffr

Full Stack Developer

Bigbear.ai Ashburn, WV

OverviewBigBear.ai is seeking a Senior Full Stack JAVA/JEE Developer for a multi-year contract to support the ongoing modernization and maintenance of the CBP information systems, using JAVA/JEE.What you will doDesign and implement JEE software applicationsUse modern software engineering tools and methodologies including Eclipse, Spring boot, Kubernetes, Docker, and Atlassian Products (Jira, Confluence)Work with users in an Agile development approach to understand requirements, then elicit feedback and refine solution through demonstrationsPresent the solution at formal and informal design reviews, and document the design according to the Government’s system lifecycle methodologyWhat you need to haveBachelor's Degree and 5 to 8 years of experienceHTML, JavaScript, CSS, XML and JSONAWSJQuery, Angular, ReactSQLJEE Web Tier Technologies (Servlets, Struts, Spring MVC)EJBSWeb services (SOAP and Restful)Unix/ LinuxJEE Server experience (Spring boot, Tomcat, WebLogic, WebSphere etc.)JMSDatabase Connectivity (JDBC, JPA, Hibernate)Java JEEExperience developing microservicesWhat we'd like you to haveDeveloping 100% automating unit testsAgile development approachAbility to work in a high-pressured, tight-deadline environmentSuperior written and oral communication skills are essentialMust be able to multitask efficiently and progressively and work comfortably in an ever-changing data environmentExcellent verbal/written communication and problem-solving skills; ability to communicate information to a variety of groups at different technical skill levelsAbout BigBear.aiBigBear.ai is a leading provider of AI-powered decision intelligence solutions for national security, supply chain management, and digital identity. Customers and partners rely on Bigbear.ai’s predictive analytics capabilities in highly complex, distributed, mission-based operating environments. Headquartered in McLean, Virginia, BigBear.ai is a public company traded on the NYSE under the symbol BBAI. For more information, visit https://bigbear.ai/ and follow BigBear.ai on LinkedIn: @BigBear.ai and X: @BigBearai.BigBear.ai is an Equal opportunity employer all protected groups, including protected veterans and individuals with disabilities.#J-18808-Ljbffr

Power Platform Developer

Diaconia Ashburn, WV

DescriptionDiaconia is looking for a talentedPower Platform Developerto join our Amazing team!If you're looking to join a company that truly appreciates you and your talents, look no further! At Diaconia, we are committed to serving and caring for our colleagues, our clients and our community. Our team is made up of talented individuals who appreciate having the opportunity to contribute their knowledge and experience to further the growth and development of our industry. Our ideal candidates embrace diverse thinking, enjoy partnering with others and are seeking to make a difference!We are currently searching for a new, full-time member for our team for the position of:Power Platform DeveloperAbout the RoleWe are seeking an experienced Power Platform Developer with hands‑on experience building solutions within the Microsoft 365 ecosystem. This role supports our government customer by developing applications, workflows, and integrations that enhance business processes and increase user productivity. The ideal candidate will have experience with Power Apps, Power Automate, Power Bi, SharePoint components, and modern Microsoft 365 development practices.This role is mostly remote, but it will require onsite travel to Ashburn, VA on a regular basis (monthly to semi-monthly).Key ResponsibilitiesDesign and buildCanvas and Model-Driven Appsusing Power Apps.DevelopPower Automate flowsfor process automation and system integration.Create and managePower BI dashboardsfor data visualization and reporting.ImplementDataverseand other connectors for secure and efficient data storage.Customize and extend solutions usingPower Fx , JavaScript, and APIs.Ensure solutions adhere togovernance, security, and compliance standards .Troubleshoot and optimize existing Power Platform solutions.Collaborate with business users to gather requirements and translate them into technical designs.Stay current with Microsoft Power Platform updates and best practices.Disclaimer "The responsibilities and duties outlined in this job description are intended to describe the general nature and level of work performed by employees within this role. However, they are not exhaustive and may be subject to change or modification at any time to meet the evolving needs of the organization."RequirementsRequired Skills & QualificationsProven experience inPower Apps ,Power Automate , andPower BI .Strong understanding ofDataverse , SharePoint, and Microsoft 365 ecosystem.Proficiency inPower Fx , formulas, and expressions.Experience withREST APIs , JSON, and integration patterns.Knowledge ofALM (Application Lifecycle Management)for Power Platform.Familiarity withsecurity roles , environment strategies, and solution packaging.Excellent problem-solving and communication skills.Onsite site work required as directed by client.This role is mostly remote, but it will require onsite travel to Ashburn, VA on a regular basis (monthly to semi-monthly).Preferred QualificationsMicrosoftPower Platform certifications(PL-100, PL-200, PL-400).Experience withAzure services(Functions, Logic Apps).Background inSQL , C#, or JavaScript for advanced customizations.Understandingdata modelingand relational database concepts.#J-18808-Ljbffr

Lead Software Developer

Via Logic LLC Ashburn, VA

OverviewLeidos is seekingLeadSoftware Developersto join theAir Traffic Business Area within the Homeland Sector , supporting the development of theAlaska Automation Capability (AAC) . AAC is part of the FAA’s broader initiative to modernize legacy flight service systems, replacing aging infrastructure with a scalable, cloud-based platform designed to improve safety and operational efficiency—particularly in remote and high-dependency aviation environments like Alaska. AAC is a mission-critical, future-ready, cloud-based solution providing safety-critical flight services to the pilot community.As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native capabilities. You will work alongside cross-functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety-critical environment.In this position, you will design and implement software solutions independently while working closely with systems engineering, product delivery, and DevSecOps teams. The primary focus is on developing containerized applications within anAgile/SAFe environment . This position supports government programs and requires the ability toobtain and maintain a favorable Public Trust investigation .Primary ResponsibilitiesResponsible for software development activities both individually and as a member of a team including writing, testing, debugging, and maintaining source code within an Agile environment.Develop solutions to complex issues.Actively participate in daily stand-ups, Release Planning, and other related team activities.Write and execute unit and functional tests.Troubleshoot and participate in the resolution of technical issues in lab and operational environments.Provide support as needed for system engineering, test engineering, and system owner teams.Basic QualificationsBachelor’s degree in computer science or a related field with 4-8 years of relevant experience or a Master’s degree with 2-6 years of experience.Significant experience with Java programming languageSignificant experience with ReactExperience with Web development and commonly used front-end tools and languages (HTML, CSS, JavaScript)Significant experience with unit testing tools such as Junit and MockitoExperience with RESTful API, JSON, XML, XSDExperience with Spring Framework, Spring Security, and Spring BootExperience with LinuxExperience with version control systems such as Git or SubversionExperience with common development tools and IDEs (Eclipse, VS Code, etc.)Experience with AI-assisted software development workflows and tools (i.e. Claude Code, Codex, etc.)Experience with Cloud-based systemsExperience working within the Agile environmentUnderstanding of sound software development principles and practicesAbility to plan and prioritize personal tasking and be able to communicate effectively verbally and in writingIndependent thinker, capable of performing high quality work, both independently and with a team in a fast-moving environmentAbility to obtain SF-85 Public Trust suitability determinationUS citizenship requiredPreferred QualificationsKnowledge of Agile/SAFe practicesKnowledge of or experience with Python programming languageKnowledge of or experience with Ansible playbooks and YAMLKnowledge of or experience with Linux shell scriptingKnowledge of DevSecOps practices and CI/CD pipelinesKnowledge of or experience with MongoDBKnowledge of air traffic control and flight servicesSecurity and ComplianceFor U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.About LeidosLeidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.Pay and BenefitsPay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.Securing Your DataBeware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected] you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.#J-18808-Ljbffr

Senior Java Developer

Maxiom Technology ashburn, va

Join to apply for the Senior Java Developer role at Maxiom Technology . We are looking for a Senior Java Developer to manage the software development life cycle, from planning and prioritizing to testing and release, and help with the migration of a COBOL app to Java. Senior Java Developer responsibilities include gathering system and user requirements, building Java modules and testing features before release. If you have hands‑on experience developing software with agile methodologies and are ready to lead our junior developers, we’d like to meet you. Ultimately, you will deploy and maintain functional, secure and high‑quality applications. Responsibilities Identify and analyze user requirements Prioritize, assign and execute tasks throughout the software development lifecycle Develop Java EE applications Write well‑designed, efficient code Review, test and debug team members’ code Design database architecture Schedule product releases with internal teams Document development phases Ensure our applications are secure and up‑to‑date Requirements Work experience as a Senior Java Developer or similar role Experience designing, building and testing Java EE applications In‑depth knowledge of popular Java frameworks like JSF and Spring MVC Experience with Object‑Oriented Design (OOD) Good delegation and time‑management skills Problem‑solving abilities BSc in Computer Science, Engineering or relevant field Seniority level Mid‑Senior level Employment type Full‑time Job function Engineering and Information Technology Industry Software Development Referrals increase your chances of interviewing at Maxiom Technology by 2x. McLean, VA $85,000.00‑$95,000.00 3 days ago North Bethesda, MD $75,000.00‑$85,000.00 2 days ago Centreville, VA $72,900.00‑$127,600.00 1 day ago Chantilly, VA $140,000.00‑$175,000.00 4 months ago Ashburn, VA $55,000.00‑$86,000.00 1 week ago #J-18808-Ljbffr