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GenAI Developer

Job DescriptionJob DescriptionDescription:C. Mack Solutions is seeking a GenAI developer to design and build applications powered by generative AI technologies. The ideal candidate combines strong software engineering fundamentals with hands-on experience implementing solutions using large language models (LLMs) and GenAI frameworks.Responsibilities:Develop and maintain GenAI-powered application features and workflows. Integrate large language model APIs and generative AI capabilities. Optimize system performance and ensure robust user experience. Work with cloud platforms to deploy scalable AI solutions. Conduct thorough testing and maintain clear technical documentation. Requirements:Candidate must have an Active CBP Public Trust or DoD clearance.Bachelor’s degree in Computer Science or related field. 3–6 years’ professional software development experience, including GenAI/LLM projects. Experience with frameworks such as LangChain, LlamaIndex, or Hugging Face. Proficiency with Python, JavaScript, or similar programming languages. Experience building with GenAI APIs and platforms (OpenAI, Gemini, Claude, etc.). Understanding of prompt engineering, RAG, and related approaches. Knowledge of cloud services (AWS, Azure, Google Cloud). Familiarity with API integration and working with different data formats. Skilled in version control (Git).

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Senior Security Developer (Full Stack)

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:C. Mack Solutions is looking for a senior software developer/architect with a passion for government technology solutions to lead the implementation of security solutions across all layers of our infrastructure, though primarily in the application layer, and in the interactions between systems. The ideal candidate will relish the opportunity to tackle hard problems and find solutions within the environmental constraints that exist. They will also be able to serve as a technical lead, working independently and in coordination with other team members to communicate complex technical concepts and guide cross-functional teams through the development lifecycle. This is a great opportunity to work on mission-critical systems that bring clear value to our customers and end users on a daily basis.What You'll Be Doing:Engineer and deploy comprehensive security measures throughout the software lifecycle, from development to production, ensuring adherence to secure coding standards and safeguarding dataEstablish and maintain security architecture and policies specifically designed for AWS-based microservices environmentsScale security solutions across diverse development teams and applications with varying architectural designsAnalyze code scan outputs from tools like Anchore, WebInspect, and DBProtect, and collaborate with compliance teams to fine-tune and enhance scanning effectivenessChampion early-stage security integration by building and embedding tools that enforce security checkpoints within CI/CD workflowsIntegrate security checks into source control and pipelines to deliver prompt feedback and uncover insecure coding patterns early in the development processPerform vulnerability scans and penetration tests to detect and address security weaknesses proactivelyApply ethical hacking techniques to uncover and remediate security flaws in both applications and infrastructurePromote secure development practices in Java, Python, and Angular by offering internal training and hands-on support for secure coding, deployment, and operationsDeploy real-time security monitoring and alerting systems to swiftly identify and respond to potential threatsRequirements:U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance.Bachelor’s degree and over 10 years of hands-on experience in software development using Java, Python, and AngularRecent experience building applications in Java with Spring Boot frameworkProven expertise in implementing security protocols such as TLS/SSL, IPsec, OAuth, OpenID Connect, SAML, HTTPS, and encryption/key managementSolid grasp of Zero Trust security concepts and practical approaches to implementationExtensive experience working with AWS services and security tools, including IAM, VPC, CloudTrail, and AWS Security featuresStrong background in microservices and container technologies, including Docker and KubernetesTrack record of integrating security checks and controls into CI/CD pipelinesKnowledgeable in network security, database systems, and hardware-level protectionsExceptional analytical and troubleshooting abilities, with a keen eye for detailEffective communicator able to explain complex security topics to both technical and non-technical audiencesExperienced in leading projects and mentoring team members to support growth and collaborationCollaborative mindset with the ability to work closely with developers, ISSOs, security engineers, architects, and other stakeholders involved in solution deliveryPreferred Skills and Experience:Skilled in using ethical hacking tools and techniques to identify and address security vulnerabilitiesHolds relevant certifications such as Certified Ethical Hacker (CEH), Certified Information Systems Security Professional (CISSP), or AWS Certified Security – SpecialtyExperienced in contributing to large-scale initiatives involving multiple development and operations teamsFamiliar with working on federal government projects, including navigating compliance and regulatory requirements

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Java Software Engineer

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:The Java Software Engineer must be able to design, develop, enhance, debug, and implement software in an Agile environment. Resources will be members of highly effective Agile teams that create and support applications for a high-impact Federal program supporting homeland security. This role requires full stack development capabilities across a diverse technology stack, with work spanning both front-end interfaces and back-end services, including integration with APIs, cloud platforms, and complex data systems. Responsibilities:Design, develop, and implement software applications using JavaScript.Collaborate with IT infrastructure teams to integrate APIs and enhance system performance.Write clean, maintainable code and conduct thorough testing to ensure software reliability.Troubleshoot and resolve software defects and performance issues in a timely manner.Participate in code reviews and provide constructive feedback to peers.Document software specifications, design processes, and user guides for future reference.Stay updated on industry trends and emerging technologies to continuously improve skills and knowledge.Requirements:You must live within the DC, MD, VA area.U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance.Bachelor’s degree plus at least 5 years of work experience Demonstrated ability to develop and maintain secure, scalable, and high-performance applicationsSupport back-end services and mission-critical business logic using Java and related frameworksAt least 4 years of experience developing Java applications and associated frameworks At least 4 year of development experience using JavaScript and/or JavaScript frameworks such as Angular At least 3 years of experience working in a story-based Agile team development environment using JIRA or a similar tool Strong database skillsExperience with REST and/or SOAP based APIs consumption and creationExperience working with JavaScript, HTML5, and/or jQueryCloud ExperienceStrong communication skills, both verbal and writtenPreferred Skills and Experience:Full stack development using the Spring FrameworkAutomated testing with Selenium, JUnit, Cucumber, etcBuild automation with Gradle or MavenDevOps and Continuous Delivery tools – such as Harness and JenkinsExperience with AWSExperience using generative AI code assist technologies

Senior Software Engineer

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:CMS is currently seeking Senior Software Engineers in support of a multi-year modernization effort for a customer based in Ashburn, VA. The Java Engineer must be able to design, develop, enhance, debug, and implement software in an Agile environment. Resources will be members of highly effective Agile teams that are passionate about cutting edge solutions.Join us to work on Agile teams and use your passion to build game changing web and mobile products for public sector clients. We are currently looking for full-stack Java developers that are excited to be part of a fast-paced Agile team. Requirements:You must live within the DC, MD, VA area.U.S. Citizenship is required. Must be able to obtain CBP Public Trust clearance.Bachelor’s degree plus at least 7 years of work experienceAt least 5 years of experience developing Java applications and associated frameworksAt least 3 years of development experience using JavaScript and/or JavaScript frameworks like AngularAt least 3 years of experience working in a story-based Agile team development environment using Jira or a similar toolAt least 3 years of experience working in an automated development environment, using CI/CD tools such as Git, Kubernetes, Jenkins, SonarQubeExperience with Spring and Spring BootExperience with Hibernate or MyBatisExperience writing automated unit testsExperience developing against relational databases (e.g., PostgreSQL, DB2, Oracle)Experience working to translate business requirements into working codeExperience developing in and deploying to a Cloud environment (such as Amazon Web Services)Strong communication skills, both written and verbalAbility to collaborate with team members to ensure client needs and expectations are met or exceededCloud experience (AWS preferred)

Technical Team Lead

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:We’re seeking a Technical Team Lead with deep expertise in Java-based applications to join our team in supporting a fast-paced government client. This role centers on delivering critical functionality through modern, web-based solutions. We’re looking for someone with a strong technical foundation, excellent communication skills, a passion for learning, and a focus on customer success. The right candidate thrives in a collaborative environment, values mentorship, and is eager to explore new technologies and business domains. What You’ll Do:As a Technical Team Lead, you’ll guide and support a cross-functional team of up to 15 developers and testers, helping to ensure high-quality outcomes through strong collaboration and continuous learning. You’ll act as a technical point of contact, work closely with stakeholders, and help remove obstacles to progress. You’ll also: Provide hands-on technical direction and contribute to architectural discussions Partner with the government technical lead to align goals and expectations Encourage team growth by mentoring, coaching, and facilitating skill development Promote process improvements and help tackle complex technical challenges Foster a unified, purpose-driven team approach to problem-solving and delivery Requirements:You must live within the DC, MD, VA area.U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance.Bachelor’s degree plus 8+ years experience or equivalent education and experience.Minimum of 5 years' hands-on experience building applications with Java and related frameworks At least 3 years of experience providing technical leadership or mentoring within a development team 1+ year of front-end development experience using JavaScript or frameworks such as Angular 3 or more years working on Agile teams using tools like Jira to manage user stories and team workflows Experience working in an automated build and deployment environment with tools like Git, Jenkins, Kubernetes, or SonarQube Proficient with Spring and Spring Boot for enterprise application development Familiarity with ORM frameworks such as Hibernate or MyBatis Skilled in writing unit tests to support automated test coverage Experience developing applications that interface with relational database systems such as Postgres, DB2 or Oracle Excellent communication skills, verbal and written Proven ability to turn business needs and functional requirements into reliable, maintainable code Strong collaboration skills, with a focus on meeting or surpassing client expectations through teamwork Hands-on experience building and deploying applications in cloud environments, such as AWS Familiarity with Java Messaging Service (JMS) technologies Background working on projects within the federal government space

Full Stack Mobile Developer

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:C. Mack Solutions is seeking Full Stack Mobile Developers with agile methodology experience to join our team and support a complex program to provide Agile development and operations and maintenance for critical systems on a mission-critical program for the Federal Government. Responsibilities:Serve 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 supportedActively 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 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 teamRequirements:You must live within the DC, MD, VA area.U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance.College degree (B.S.) in Computer Science, Software Engineering, Information Management Systems or a related discipline. Professional Experience: at least 7 plus (7+) years related technical experience, with software design, development and implementation in a Windows EnvironmentExperience and familiarity with REACT / REACT Native and JavaScript skills.Experience with any of the following is highly needed: Mobile App development for android and IOS devices, AWS experience.Familiarity with material UI design and FIGMA toolExperience using Postgres databasesExperience with data base designWorking 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)Ability 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, active learner and self-drivenPreferred Skills and Experience:Familiarity with any of the following is highly desirable: Mobile App development and AWS experience.Experience with Agile methodology, JIRA, sprint planning, story pointing and work estimation.

Front-end Developer

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:C. Mack Solutions is seeking a talented frontend developer to build modern, intuitive web applications. The ideal candidate demonstrates strong skills in React as well as a solid foundation in front-end technologies, UI design principles, and collaboration within agile teams.Responsibilities:Develop and maintain responsive, high-quality web interfaces. Translate design mockups and user requirements into interactive features. Integrate RESTful APIs and manage complex application state. Optimize for performance, accessibility, and cross-browser compatibility. Collaborate closely with designers, backend engineers, and product leads. Write maintainable code with clear documentation and implement thorough testing. Participate in code reviews and ongoing learning within the team. Bonus: Contribute to AI-enhanced UI components and experiences, including GenAI-driven flows. Requirements:Candidate must have an Active CBP Public Trust or DoD clearance.Bachelor’s degree in Computer Science or related field. 1–4 years’ professional experience in frontend development. Strong expertise in React; experience with other frameworks (Vue, Angular, Svelte) is a plus. Expert level in JavaScript/TypeScript and React (hooks, state management, component architecture). Solid background in HTML5, CSS3, and UI libraries (Material-UI, Ant Design). Experience integrating APIs and managing frontend state (Redux, Context API). Familiarity with build tools (Webpack, Babel) and version control (Git). Bonus: Experience with testing tools (Jest, Cypress), accessibility standards, and GenAI/LLM-powered UI features.

Full Stack Developer (JavaScript, JavaScript Express & React)

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:C. Mack Solutions is seeking a Full Stack Developer to join our team. The Full Stack Developer will specialize in JavaScript, JavaScript Express & React as we provide support to our customer.Responsibilities: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 teamRequirements:You must live within the DC, MD, VA area.Candidate must have current CBP Public Trust clearance.College degree (B.S.) in Computer Science, Software Engineering, Information Management Systems, or a related discipline. Professional Experience: at least seven (7) years related technical experience, with software design, development, and implementationExperience with JavaScript Web-Services Development; Familiarity with any of the following: JavaScript, React, Typescript,Micro services architecture and development: Familiar with JavaScript, NodeJS, React, JestDatabase Development: Experience with NoSQL databases (DocumentDB)Experience with application integration and delivery with a DevOps pipelineActing independently to expose and resolve problemsExperience with GIT source code control systems and concurrent development workflowsAbility 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 managementPreferred Skills and Experience:React UI application DevelopmentFamiliarity with redis cacheKnowledge of ffmpeg and video codecs as relates to webcamsAbility to apply advanced principles, theories, and concepts, and contribute to the development of innovative principles and ideasExperience developing with WebSockets for real time communication between web clients and servers

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Database Administrator

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:C. Mack Solutions seeking a Database Administrator to join our team and support a complex program to provide Agile development and operations and maintenance for critical systems on a mission-critical program for the Federal Government. This role will support test planning and execution on an exciting new technology program from requirements definition through testing and deployment. You will have the opportunity to apply your knowledge, skills and experience to building a truly modern application that is new development and cloud native. You will work in a SecDevOps environment that includes continuous integration/continuous deployment and test automation in a consistent agile software development framework.Responsibilities:Champion all aspects of data architecture, analytic methodology, and visualization functions including engineering standards, governance processes, and providing vision and context to explore and effectively utilize emerging technologies.Work with database developers and administrators across multiple product teams.Serve as a data and technology expert across a broad and diverse set of mission critical applicationsActively participate in Agile Scrum sprint planning, artifact creation, sprint testing, regression testing, demonstrations, retrospectives and solution releasesAnalyze project-related problems and create innovative solutions involving technology, analytic methodologies, and advanced solution components.Deliver deployable software in short sprints.The ability to be adaptable and work constructively with a technically diverse and geographically separated team is crucial.Requirements:You must live within the DC, MD, VA area.U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance.College degree (B.S.) in Computer Science, Software Engineering, Information Management Systems or a related discipline. Professional Experience: at least seven (7) years related technical experience, with databases, including designing, implementing, and optimizing database systems.Experience with data modeling, tuning, scaling, security, backup, recovery, and integrity of RDBMS, specifically PostgreSQL in AWS.Solid understanding of concepts such as data types, indexing, performance tuning, query plans.Ability to take high level requirements and work with Product Architects to create a data model to store transactional data.Understanding of Oracle, Microsoft SQL Server, or MySQL, as well as understanding of NoSQL databases like DynamoDB, MongoDB, Cassandra, or Couchbase.Strong SQL skills for querying, analyzing, and managing data, as well as creating and maintaining stored procedures, triggers, and views.Experience with CDC (change data capture) concepts and usage.Knowledge of security best practices, including encryption, authentication, and access control, to ensure that sensitive data is protected and compliant with government regulations.Experience with cloud-based database services such as Amazon Web Services (AWS) RDS, Google Cloud SQL, or Microsoft Azure SQL Database.Experience with data integration tools and techniques, including ETL (Extract, Transform, Load) processes, and queue-based messaging systems to ensure seamless data flow between systems.Familiarity with microservices based architecture and its impact to data storage.Skills in analyzing and optimizing database performance, including indexing, partitioning, and query optimization.Ability to work effectively with cross-functional teams, including developers, data analysts, and business stakeholders, to gather requirements and communicate complex database concepts.Experience helping customers and mission users conceptualize and prioritize their data analysis and visualization needs.Preferred Skills and Experience:Experience with NoSQL databases such as DynamoDB, DocumentDB, or Mongo a plus.Experience with geospatial data management a plus.Experience with Apache Kafka for messaging and data streaming a plus.Experience with data governance platforms such as Collibra a plus.Experience in Continuous integration, Continuous Deployment (CI/CD) and DevOps processes and toolsExperience implementing or migrating to Cloud environments like Amazon Web Services (AWS), Google Cloud, or Microsoft Azure.

PostgreSQL DBA

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:C. Mack Solutions is seeking a PostgreSQL DBA with strong ETL and AWS Experience to join our team and support a complex program to provide Agile development and operations and maintenance for critical systems on a mission-critical program for the Federal Government.The ability to be adaptable and to work constructively with a technically diverse and geographically separated team is crucial. You should have worked in PostgreSQL DBA experience, ETL tool to understand concepts and supported RDS in AWS environment.Responsibilities:Build ERD, physical and logical data modelsFollow and establish DB standardsUnderstand PostgreSQL architectureUpgrade PostgreSQL DatabasesSupport the Functional Business, Application Development, and Security Technical Teams to provide O&M and Release Management support for landscape componentsIntegrate and support cloud RDS Databases providing high availability backupParticipate in the design activities consistent with enterprise standards and Agency priorities for continuous improvement (e.g.: Robotics Process Automation, Automated Testing, etc.) to deliver value-added solutionsParticipate proof of concept in new technologies.Design, develop and implement approaches for historical data retention and archival storage backup and recovery solutionsWork in a collaborative team environment with other operational (e.g. OS, DBA, network, security, etc.) team members to troubleshoot and optimize performanceWrite triggers and functions to support ETLMigrate data across heterogenous Databases.Work on AWS services specifically AWS DMS, RDS, Lambda, S3Work on performance insight AWS service.Work with Informatica ETL toolRequirements:You must live within the DC, MD, VA area.U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance.College degree (B.S.) in Computer Science, Software Engineering, Information Management Systems or a related discipline7-10 years of technical experienceA minimum of 5 years of experience as Database Administrator and Developer in PostgreSQL and Oracle environmentA minimum of 2 years of AWS DMS service experience Must be familiar with RDS upgradesMust have worked on AWS performance insightStrong analytical and problem-solving skills to provide expertise to support application teamStrong written communication skills to document implemented solutions or workaroundsGood understanding of physical and logical data modellingCapable of working in a team environment and collaborating with other teams like platform support, developers, production support etc.Experience utilizing performance monitoring tools to work with application developers to identify and correct inefficient database operationsDatabase Migration experience strongly preferred, especially Oracle to PostgreSQLAWS RDS experience especially AuroraExperience working with AWS services such as S3 AND LambdaStrong programming background for writing triggers, functions and procedures.Must be available for Production on-call support

Database Developer

C. Mack Solutions, LLC Ashburn, VA

Job DescriptionJob DescriptionDescription:C. Mack Solutions is seeking Database Developers to support a complex program to provide Agile development and operations and maintenance for critical systems on a mission-critical program for the Federal Government. The Database Developer will work alongside database developers and administrators to support active application development efforts. Responsibilities include creating and updating database structures, managing data within large and complex environments, and optimizing performance across AWS and on-prem systems. This role will also contribute to data pipelines and replication processes while collaborating with program teams to support design and implementation needs. It’s a strong opportunity to expand into new domains and learn new tools in a dynamic environment.Requirements:You must live within the DC, MD, VA area.U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance.Bachelor's degree plus 3+ years in database development rolesExperience in data profiling, cleansing, reporting, data staging, ETL jobs, batch jobs, partitioning and replicationStrong experience troubleshooting, tuning SQL and writing performance queries for AWS hosted and on-prem databasesStrong experience in developing, tuning, and monitoring data replication jobs – with strong preference to a replication tool (e.i. Qlik Replicate or similar) and manual scripting from various sources (DB2, Postges, Oracle) to various targets (Databricks, DB2, Postgres).Strong experience creating complex SQL in complex data environments including entity relationships, data modeling, data normalization/denormalizationExperience in writing DDL, DML and DCLHands-on experience with PostgreSQL database development – preferable in AWS RDS environmentExperience script writing (prefer Python)AWS experience encompassing large-scale data migration and validation processes, development and maintenance of end-to-end data pipelines, and performance monitoring.Proficient in leveraging Kibana and Dynatrace for log analysis, alerting, and system optimization across distributed cloud environments.Quickly adapts to new tools and technologies, using them to propose fresh approaches to problem-solving.Works closely with program teams and customers to align on design decisions while respecting project parameters.Excellent communication skills with both clients and technical staff.Preferred Skills and Experience:Degree in Computer ScienceExperience with Informatica ETLExperience working with federal government clientsExpertise in Oracle or DB2Experience in database administrationExperience in with Agile methodology and Jira