> Markdown version of [/jobs/ext/2229320-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/2229320-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full-Stack Developer - **Company:** Millennial Software - **Location:** Herndon, VA, United States - **Salary:** $150,000.0 - $230,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, Application Integration Architecture, Software Applications, Application Performance Management, Microsoft Azure, C Sharp (Programming Language), Cloud Engineering, Code Review, CompTIA Security+, Databases, Continuous Integration, Corona (Software Development Kit), Data Integration, Relational Databases, Distributed Systems, Graph Database, Python (Programming Language), Knowledge Management, Machine Learning, Message Broker, Web Ontology Language, OpenShift, Scrum Methodology, Red Hat Enterprise Linux, Azure Machine Learning, Semantic Web, Software Engineering, Software Systems, SPARQL, System Testing, Systems Integration, Enterprise Software Applications, Large Language Models, Software Application Programming, Backend, Git, Event Driven Architecture, Containerization, Enterprise Integration, Integration Frameworks, Data Management, Restful APIs, Software Version Control, Devsecops, Docker, Programming Languages, Microservices - **Published:** August 25, 2026 - **Apply:** https://www.dice.com/job-detail/786174b9-1342-40be-b5a8-69acd2143303 ## About the Role * Active TS/SCI clearance * Must be able to successfully obtain and maintain a CI Polygraph * 17+ years of relevant experience with a Bachelor's Degree or 12+ years of relevant experience with a Graduate Degree * Demonstrated experience designing, developing, and maintaining enterprise software applications using modern programming languages such as Java, Python, or C# * Experience developing RESTful APIs, microservices, and distributed applications * Experience integrating applications with relational databases, graph databases, or semantic data platforms * Experience with containerization technologies such as Docker and Kubernetes/OpenShift * Familiarity with Agile software development methodologies, DevSecOps practices, and CI/CD pipelines * Experience with version control systems such as Git * Ability to communicate complex technical concepts effectively to technical and non-technical stakeholders Nice to have: * Experience supporting Object-Based Intelligence, Intelligence Community, or Department of Defense mission systems * Experience developing applications utilizing Semantic Web technologies, including RDF, OWL, SPARQL, knowledge graphs, or graph databases * Experience integrating AI/ML services, large language models (LLMs), or advanced analytics into enterprise applications * Experience with cloud-native application development using AWS, Azure, or Red Hat OpenShift * Experience implementing secure software development practices in accordance with Government cybersecurity requirements * Experience with event-driven architectures, message brokers, and enterprise integration frameworks * Relevant software engineering or cybersecurity certifications, such as AWS Certified Developer, Azure Developer Associate, Red Hat Certified Specialist, Security+, or equivalent * Experience providing technical leadership, mentoring, and knowledge transfer to Government personnel or multidisciplinary teams ## Description Millennial Software is seeking a Full-Stack Developer to join our team. You will design, develop, integrate, test, and maintain software applications and services supporting Object-Based Intelligence (OBI) mission requirements, enterprise ontologies, and knowledge graph capabilities. Our ideal candidate is an experienced Software Engineer who can develop scalable, secure, and high-performance applications while working across modern software development and DevSecOps environments. You will work closely with ontology engineers, database engineers, data scientists, analysts, and Government stakeholders to translate mission requirements into effective software solutions. This role will support semantic data integration, knowledge management, advanced analytics, and AI/ML capabilities through the development of APIs, microservices, and applications that integrate enterprise data sources and knowledge graph technologies. Essential Functions: * Design, develop, test, deploy, and maintain software applications and microservices supporting mission requirements. * Develop APIs and backend services that integrate with enterprise ontologies, knowledge graphs, semantic databases, and object-management systems. * Implement software solutions utilizing Semantic Web technologies, including RDF, OWL, SPARQL, and graph-based data models. * Collaborate with technical teams and Government stakeholders to translate mission requirements into scalable and maintainable software solutions. * Develop secure, containerized applications using modern software engineering and cloud-native practices. * Integrate heterogeneous data sources through RESTful APIs, messaging services, and enterprise data integration frameworks. * Develop automated unit, integration, and system tests while contributing to CI/CD pipelines. * Optimize application performance, scalability, and reliability to support mission operations and advanced analytics. * Participate in Agile development activities, including sprint planning, code reviews, technical design sessions, and backlog refinement. * Maintain software design documentation, interface specifications, API documentation, and technical implementation guides. * Support AI/ML initiatives by developing software services that provide access to semantic data, knowledge graphs, and contextual reasoning capabilities. * Provide technical leadership, mentoring, and knowledge transfer to Government personnel and project team members as appropriate. ## Related Videos - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Grappling With Clunky Old Software? Start by Understanding What’s Inside!](https://www.wearedevelopers.com/videos/1189-grappling-with-clunky-old-software-start-by-understanding-what-s-inside) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know)