Senior Full Stack Engineer

About Agile Defense At Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next. Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests. Requisition #: 1768 Job Title: Senior Full Stack Engineer Location: Remote Clearance Level: Secret, Must Have Ability to Obtain a Clearance Job Description We are seeking a Senior Full Stack Engineer to join the Workforce engineering team, an AI-enabled application platform focused on secure, user-centered workflows, enterprise integrations, and cloud-native delivery. This is a hands-on role: the ideal candidate will spend 50%+ of their time actively designing, coding, reviewing, and shipping software while also leading technical execution for a small team. Responsibilities include building full stack features across modern web front ends and backend APIs, defining application architecture and API contracts, contributing to AI-enabled capabilities (tool calling, prompt/control flow, context management, LLM integration), supporting secure enterprise integrations, and mentoring engineers through code review and pairing. This is not a pure architecture or management role — the person must remain hands-on. Education and Background Candidate should have a strong professional background in software engineering with demonstrated ability to design and implement production-grade application architecture across front-end, backend, data, and integration layers. Practical, applied experience is prioritized over formal credentials. Years of Experience 7+ years Required Skills Strong hands-on coding in a typed OOP language (Java, C#, TypeScript, Go, Kotlin, or similar) Professional experience building both modern front-end apps and backend APIs/services Proven ability to design production-grade architecture across front-end, backend, data, and integration layers Skilled at breaking down complex requirements into implementation plans and technical docs Experience leading technical work for a small team or owning a major feature area Solid grasp of API design, auth patterns, data modeling, error handling, and testing Able to ramp up in a large/complex codebase with minimal direction Practical security knowledge: access control, data protection, dependency hygiene, production readiness Strong communication skills for explaining tradeoffs to engineers and stakeholders Familiarity with AI application patterns: tool calling, prompt/control flow, context management, safe handling of model I/O Preferred Skills TypeScript, Node.js, React SaaS, enterprise, government, or secure internal platform experience Microservices, containerized/cloud-native architecture, CI/CD Microsoft 365, Teams, SharePoint, or OneDrive integration OIDC/OAuth2, Keycloak, or Entra ID Experience with sensitive data, enterprise permissions, auditability, compliance DevSecOps, automated testing, observability AI-enabled document workflows, search/summarization, or agentic patterns LangChain, LangGraph, Semantic Kernel, LlamaIndex, or OpenAI/Azure OpenAI APIs Working Conditons Standard office/remote software engineering role. Primarily sedentary computer-based work; no unusual physical demands or environmental hazards. Requires sustained focus for coding, code review, and collaborative technical sessions (in person or virtual). Our Core Values Employees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together. What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are. Happy - Be Infectious. Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do. Helpful - Be Supportive. Being helpful is the foundation of teamwork, resulting in a supportive atmosphere where collaboration flourishes, and collective success is celebrated. Honest - Be Trustworthy. Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support. Humble - Be Grounded. Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task. Hungry - Be Eager. Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges. Hustle - Be Driven. Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success. Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities