Wardstone

Satellites for Missile Defense

Simulation and Modeling Engineer

$100K - $180K0.25% - 1.25%San Francisco, CA, US / Los Angeles, CA, US
Job type
Full-time
Role
Engineering, Robotics
Experience
3+ years
Visa
US citizen/visa only
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Sebastian Fischer
Sebastian Fischer
Founder and CEO

About the role

We are looking for a Simulation & Modeling Engineer who will build and own Wardstone’s end-to-end physics models: orbital mechanics, interceptor trajectories, guidance/dynamics, dispersion behavior, aerodynamic models, sensor models, thermal effects, and Monte Carlo analysis.

This role is central to Wardstone’s entire engineering process. Your models will define vehicle design and intercept feasibility, ΔV budgets, terminal constraints, survival envelopes, effectiveness, and system-level design trades.

You will work directly with the founders GNC, Propulsion, Sensor, and Avionics engineers to connect your models to real test data and ensure every design choice is grounded in physics.

What You’ll Do

Interceptor Dynamics Modeling

  • Build high-fidelity 6DOF models of interceptor trajectories and target maneuvers.
  • Model aerodynamic forces, flight regimes (subsonic → hypersonic), and uncertainties.
  • Implement full state propagation with drag, atmospheric effects, gravity, and actuator limits.

Orbital Mechanics & VLEO Modeling

  • Implement orbital propagators, Lambert solvers, and multi-body dynamics.
  • Model VLEO drag, solar flux, eclipse cycles, thermal conditions, and station-keeping budgets.
  • Quantify ΔV requirements for intercept geometries and constellation designs.

Guidance, Control & Sensor Model Integration

  • Integrate GNC algorithms into simulation environments.
  • Model perception pipelines: IR signatures, SNR, glint, thermal clutter, and atmospheric attenuation.
  • Build closed-loop simulations with perception → guidance → actuation → dynamics → intercept logic.

Hailstorm Dispersal Modeling

  • Model particle trajectories, dispersal cones, cloud expansion, and lethality envelopes.
  • Model impulse delivery mechanisms: blast, thrust, or hybrid dispersal events.
  • Work with energetics engineers on momentary high-G propagation and multi-body interactions.

Monte Carlo & Probabilistic Analysis

  • Run large-scale Monte Carlo simulations to evaluate hit probability, robustness, and margins.
  • Develop parameter sweeps for timing, sensing errors, aerodynamic uncertainties, and ΔV constraints.
  • Produce data-driven design recommendations for system architecture decisions.

Simulation Infrastructure & Visualization

  • Build clean, modular simulation tools in MATLAB/Python/C++ for internal engineering teams.
  • Develop visualization tools (2D, 3D, orbital views) used for engineering and visual storytelling.
  • Maintain code quality, performance, and model usability across the engineering org.

Required Qualifications

  • B.S. or M.S. in Aerospace Engineering, Mechanical Engineering, Physics, Applied Mathematics, or similar.
  • Strong experience with dynamic simulations (MATLAB, Simulink, Python, C++, Julia, or equivalent).
  • Deep understanding of orbital mechanics, flight dynamics, or missile/rocket modeling.
  • Experience with numerical methods, ODE/PDE solvers, filtering, integration stability, and optimization.
  • Ability to validate simulated results against analytical solutions or experimental data.
  • Strong intuition for physics and comfort working with incomplete or noisy data.
  • US CITIZENSHIP REQUIRED

Nice to Haves

  • Experience modeling hypersonic flow, ablation, or high-enthalpy environments.
  • Experience with high-speed particle or fragment modeling.
  • Experience connecting simulation to hardware-in-the-loop systems.
  • Familiarity with CFD tools (OpenFOAM, SU2, ANSYS Fluent).
  • Experience with sensor modeling: IR/EO tracking, radar, radiometric models, or synthetic scene generation.
  • Experience building custom visualization pipelines or simulation frameworks.

About the interview

  • 15-30 min phone intro with CEO
  • 1 Hour phone deep dive with CTO
  • 1 Hour in person with CEO

About Wardstone

Wardstone is building the next generation of space-based missile defense. We design and deploy autonomous orbital interceptors capable of defeating hypersonic and ballistic threats, a capability the U.S. and its allies urgently need but that no one has yet delivered.

At Wardstone, you will build hardware that gets tested constantly and pushed to its limits, from US Air Force assisted ground experiments to supersonic ground launched platforms to future orbital prototypes. You’ll work on systems that combine advanced sensing, guidance, high-energy physics, and spaceflight in ways few organizations on Earth attempt.

We are a small, elite engineering team moving fast to solve problems of national importance. Every engineer has massive ownership, rapid iteration cycles, and a direct impact on the direction of the company and the defense of millions of people.

If you want to work at the intersection of space, autonomy, and national security, you should join Wardstone.

Wardstone
Founded:2025
Batch:F25
Team Size:2
Status:
Active
Founders
Sebastian Fischer
Sebastian Fischer
Founder and CEO
Tobias Fischer
Tobias Fischer
Founder