Anduril Industries
Multiphysics Engineer, High Speed Reacting Flow
About this role
Anduril Industries seeks a Multiphysics Engineer to design and optimize air vehicle propulsion systems using CFD analysis of high-speed reacting flows and combustion. You'll drive thermal and structural analysis from hand calculations through 3D simulation, supporting rocket nozzle design and validating models against test data.
What you'll do
- Conduct CFD analysis of internal flows with combustion using commercial codes like STAR-CCM+ or Fluent
- Progress designs from 1D hand calculations through 3D CFD refinement and optimization
- Predict heat loads, surface temperatures, and pressures for downstream thermal and structural teams
- Model gas properties and chemistry for high-speed reacting flow conditions
- Validate simulations against static fire and ground test data, iterating models for accuracy
- Create documented, repeatable analysis workflows and present results at design reviews
What they're looking for
- CFD (STAR-CCM+, Fluent, or equivalent)
- Compressible flow and shock dynamics
- Heat transfer (conduction, convection, radiation)
- Reacting flow and combustion modeling
- Python or MATLAB programming
- 1D analytical and hand-calculation methods
- Meshing and numerical convergence techniques
- Technical writing and presentation
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Anduril Industries
Anduril Industries builds autonomous defense systems including underwater vehicles, unmanned aircraft, and electronic warfare platforms for the Department of Defense. The company is hiring across mechanical engineering, mission operations, software development, technical leadership, and advanced manufacturing roles to support the design, deployment, and production of these mission-critical systems.
- Website
- anduril.com
Likely interview questions
- Walk us through a CFD analysis you performed on a high-speed or reacting flow—what physics dominated and how did you validate results?
- Describe your experience with compressible flow phenomena like shocks and choked flow; how have you modeled these in practice?