GNC Engineer, Modeling & Simulations

About the Company :

We are a stealth-mode Aerospace & Defense startup headquartered in El Segundo, CA. Our founding team hails from SpaceX, Anduril, and Lockheed Martin, and we are backed by Joint Staff-level military leadership and several Silicon Valley firms. With a world-class business development & leadership team already in place, we are well positioned to capitalize on already overwhelming demand.

Job Overview :

As a GNC Engineer focused on Simulations, you will lead the development of high-fidelity physics-based simulations for end-to-end missile flight and guidance validation. These simulations serve as a digital proving ground for our flight software, autonomy stack, and control systems-enabling us to iterate rapidly and validate in silico what would otherwise require expensive, slow, or impossible real-world testing.

You'll own simulation architecture, real-time physics integration, and testbed development. If you're comfortable writing performant simulation code in Rust and Python, and you're looking to do impactful work on a system that must work the first time, this is your chance.

Key Responsibilities :

• Design high-performance 6-DOF flight and physics simulations
• Build simulation components that replicate real-world dynamics and sensor behavior
• Integrate guidance, navigation, and control (GNC) logic into full-stack simulations
• Develop Monte Carlo, Hardware-in-the-Loop (HITL), and closed-loop test infrastructure
• Collaborate closely with flight software, autonomy, and hardware teams to ensure simulation fidelity matches real-world constraints
• Create tooling to support scenario authoring, data visualization, and performance analysis
• Own simulation pipeline performance and determinism across a wide range of conditions

Basic Qualifications :

Preferred Qualifications :