About the role
Who we are
Theseus is a defense technology company building visual positioning to solve reliability for the next 10 million drones. We’re focused on localization in GPS-denied environments because we believe it is one of the biggest blockers to making autonomous systems reliable in the real world.
Our products are already being used in operational environments today. We’re a small team with high ownership and accountability, and we’re looking for engineers who want to move fast, work against real-world constraints, and see their systems deployed in the field.
The role
We’re seeking a Senior Navigation Software Engineer to lead development of the real-time navigation and state estimation systems at the core of our autonomy stack.
You’ll own the systems that turn onboard sensor data into a continuous, reliable estimate of position and motion without GPS. This role is for someone who can independently drive technical decisions, build robust estimation software, and take systems from concept through deployment on real hardware in demanding environments.
You will:
- Own navigation and state estimation systems end to end, from algorithm design to deployment and field iteration
- Design and improve sensor fusion pipelines that turn onboard sensor data into reliable navigation outputs
- Build estimators that remain robust under real-world failure modes, degraded sensing, and constrained compute
- Define system behavior across initialization, nominal operation, degradation, and recovery, with clear health monitoring
- Drive architecture and technical tradeoffs across the navigation stack, balancing accuracy, robustness, latency, and simplicity
- Partner with autonomy, platform, and flight systems engineers to integrate navigation into the broader product
