Hiring on behalf of our clientTitle: Senior Full-Stack Engineer – ProductTime: Full-TimeLocation: Remote within the United States, with 40–50% travel to customer sites, primarily Washington, DC and Tampa.Compensation: $170,000–$220,000 base salary plus competitive equity.The CompanyOur client builds software and technology for teams working on national security and defence missions. Its capabilities support a range of government users, with work spanning maritime vigilance, information challenges and intelligence. The company focuses on equipping operators with technology suited to complex, mission-critical environments.Role OverviewJoin a new product engineering team expanding an agentic AI platform to new missions, datasets and operating environments. This is an opportunity to combine hands-on full-stack product engineering with forward deployment: you will work directly with operators, understand the challenges they face and build features that make the platform useful in their environment.Working as part of a new two-to-three-person team, you will take ownership from the initial user requirement through implementation and production deployment. The work includes integrating with government-owned systems and travelling to customer sites, so you can see the product and the problems it solves firsthand.Key ResponsibilitiesBuild and ship user-facing product features across the full stack, using React on the frontend and working with PostgreSQL, Redis and S3 for the platform’s data, caching and storage needs.Spend time with government operators at customer sites, understand their mission needs and turn those needs into clear product requirements and features.Deploy and integrate software into government customer environments, working with government-owned data platforms, identity and access management (IdAM), security information and event management (SIEM), and cross-domain solutions (CDS).Own product features end to end, from understanding the requirement and implementing the solution through to deployment in the field.Collaborate within a new, small product engineering team to expand an agentic AI platform to new missions, datasets and operating environments.Qualifications4-10 years of experience as a full-stack or product engineer and a completed degree.Experience personally building software for government or defence problems or customers, and deploying software into customer environments.An active US security clearance. TS/SCI required, Hands-on experience working with or interfacing with government-owned IT systems, such as data platforms, IdAM, SIEM or cross-domain solutions.Hands-on full-stack product development experience with a modern frontend framework such as React, relational databases such as PostgreSQL, caching technologies such as Redis and object storage such as S3.Strong communication skills and confidence working directly with customers; willingness to travel approximately 40–50%, primarily to sites in Washington, DC and Tampa.A balanced frontend/backend or frontend-heavy full-stack background is advantageous. Experience with the DoD Risk Management Framework (RMF) or LLM agents is also a plus.