Modeling & Simulation Engineer

Singularity Defense; Gardena (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

Singularity Defense is seeking a GNC Engineer focused on simulations in Gardena, CA. You will own the architecture for high-fidelity, real-time physics-based simulations for missile flight and guidance validation, enabling rapid in silico validation across the stack.

The role requires expertise in Rust and Python for performance-critical development, with experience in simulation fidelity, HITL, and open-loop/closed-loop testing across aerospace domains.

Qualifications

• 5+ years of experience building simulations or numerical modeling frameworks.
• Proficient in Rust and Python for performance-critical development.
• Understanding of rigid body dynamics, kinematics, numerical integration, and physics.
• Experience building tools for flight dynamics, aerospace simulation, or autonomous systems.

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 with flight software, autonomy, and hardware teams to ensure fidelity.
• Create tooling to support scenario authoring, data visualization, and performance analysis.
• Own simulation pipeline performance and determinism across conditions.

Skills

Rust programming

Python programming

Simulation design

GNC integration

Monte Carlo testing

Education

Bachelor's degree in Computer Science or related field

Tools

Rapier

Bevy

OpenGL

Job description

We are a stealth-mode Aerospace & Defense startup headquartered in Gardena, 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:

• Bachelor's degree in Computer Science or a related technical field
• 5+ years of experience building simulations or numerical modeling frameworks
• Proficient in Rust and Python for performance-critical and test-driven development
• Understanding of rigid body dynamics, kinematics, numerical integration, and physics
• Experience building tools for flight dynamics, aerospace simulation, or autonomous systems

Preferred Qualifications:

• Experience with Monte Carlo testing, sensor emulation, and closed-loop control validation
• Familiarity with real-time systems, latency-sensitive architectures, or distributed simulation
• Experience deploying or validating autonomous systems (missiles, drones, satellites, or vehicles)
• Familiarity with Rust game engines or physics libraries (e.g., Rapier, Bevy)
• Exposure to 3D rendering for simulation visualization (e.g., WebGL, OpenGL, Three.js)
• Contributions to aerospace open source or simulation frameworks (e.g., JSBSim, Gazebo)

Itar Requirements

• To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C.
• 1157, or (iv) Asylee under 8 U.S.C.
• 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here .