Location: Bellevue, WA (4+ days onsite)Stack: C#, .NET, AWS (Secret Environment), Docker, Kubernetes Join a well-funded, high-caliber startup tackling some of the most complex technical challenges in the contested logistics and national security space. As a Backend Engineer, you'll help architect and build the core simulation engine powering intelligent, autonomous decision-making in dynamic, high-stakes environments.You’ll work directly on distributed systems that must operate reliably under uncertainty, driving breakthrough performance using modern engineering practices and secure infrastructure. This isn’t a maintenance role—it’s for a builder who can own and evolve systems at the core of our product. What You'll Do:- Design and scale the backend for our multi-agent simulation platform- Own distributed system components from architecture to deployment- Collaborate with AI and frontend teams to power real-time decision loops- Work in secure cloud environments to deliver production-grade systems Ideal Candidate:- 2–6 years of hands-on backend experience, preferably in C#/.NET- Strong grasp of system design and distributed architectures- Ownership mindset with a bias toward shipping impactful code- Comfortable navigating high-performance, mission-driven teams This is more than just engineering—it’s a chance to protect lives, shape national security, and be part of a team that’s building what others only theorize.