Most full stack roles ask you to move pixels around a dashboard. This one asks you to build the interface that controls the largest drone swarm on the planet. You'll help architect the frontend for Legion's Command & Control platform: the software that lets a single operator plan, direct, and execute missions across a networked swarm of heterogeneous aircraft, in real time, over intermittent comms, at a scale nobody else in the industry is attempting. This isn't CRUD. It's real-time distributed systems, dense telemetry visualization, and interface design for a problem space that barely has prior art. **WHAT YOU'LL DO** - Help architect the frontend for a C2 system directing swarms of heterogeneous aircraft - Build distributed, collaborative real-time infrastructure for controlling large numbers of aircraft simultaneously, even when comms drop - Design and ship new UI concepts for representing vehicle telemetry, sensor data, scheduling, crew resources, data link management, and more, much of it with no existing playbook to follow - Own full stack features end to end, from design through deployment - Ship early, ship often, backed by strong CI/CD, QA, and DevSecOps **WHAT YOU'VE DONE** - Degree in Computer Science or equivalent experience - 6+ years building complex full stack applications with real frontend and backend depth - Strong UI/UX instincts and the tools to back them up - Built production web interfaces with React or a comparable modern framework **WHAT SETS YOU APART** - Experience with both immediate mode (games, simulation) and retained mode UI paradigms - A track record with performance-sensitive application development - Familiarity with video streaming protocols - WebGL/OpenGL experience - Working fluency in C++ - Experience with geospatial applications **WHY THIS ROLE** You'll be one of the earliest engineers shaping how humans command autonomous systems at scale, work that's currently being defined in real time, by a small team, with your fingerprints on the architecture. If you want to build the future of human-swarm interaction rather than maintain someone else's, this is that seat. **What We Offer** - Meaningful equity in a high-growth defense technology company - Competitive base salary commensurate with experience - Medical, dental, vision, and 401k - PTO and paid sick leave - Monthly wellness stipend - Daily catered lunch (office) - Paid parental leave - Direct impact on a critical national security mission - A world-class team of engineers and operators solving genuinely hard problems