Stealth Startup

Senior Software Engineer, Modelling & Simulations

LocationEl Segundo, CA
Job Typefull_time

About This Job


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 Senior Software 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 testin

g.

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 chan


ce.

Key Responsibilit

ies:Design high-performance 6-DOF flight and physics simulat

ionsBuild simulation components that replicate real-world dynamics and sensor beha
viorIntegrate guidance, navigation, and control (GNC) logic into full-stack simulat
ionsDevelop Monte Carlo, Hardware-in-the-Loop (HITL), and closed-loop test infrastruc
tureCollaborate closely with flight software, autonomy, and hardware teams to ensure simulation fidelity matches real-world constra
intsCreate tooling to support scenario authoring, data visualization, and performance anal
ysisOwn simulation pipeline performance and determinism across a wide range of condit


ions

Basic Qualificat

ions:Bachelor's degree in Computer Science or a related technical

field5+ years of experience building simulations or numerical modeling frame
worksProficient in Rust and Python for performance-critical and test-driven develo
pmentUnderstanding of rigid body dynamics, kinematics, numerical integration, and ph
ysicsExperience building tools for flight dynamics, aerospace simulation, or autonomous sy


stems

Preferred Qualifica

tions:Experience with Monte Carlo testing, sensor emulation, and closed-loop control vali

dationFamiliarity with real-time systems, latency-sensitive architectures, or distributed simu
lationExperience deploying or validating autonomous systems (missiles, drones, satellites, or veh
icles)Familiarity with Rust game engines or physics libraries (e.g., Rapier,
Bevy)Exposure to 3D rendering for simulation visualization (e.g., WebGL, OpenGL, Thr
ee.js)Contributions to aerospace open source or simulation frameworks (e.g., JSBSim, G


azebo)

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