- Robot type
- Drone · Defense
- Location
- Costa MesaCaliforniaUSA
- Job type
- Software
- Posted
- Sep 8, 2026
- Salary
- $146,000–$194,000 a year
Senior Multiphysics Engineer, High Speed Reacting Flow
Job description
The Multiphysics Team's work is essential to support our rapid innovation cycle and improve the performance and reliability of advanced defense technologies. Multiphysics Engineers combine computational and experimental methods to size, design, and optimize systems involving complex, coupled physics processes and environments. This team operates with full design ownership through the product development cycle, moving from system-level and first-principles models to 3D simulation and validation/product testing.
We are looking for a Multiphysics Engineer to join our team in Costa Mesa, CA. In this role you will own the internal flow, combustion, and heat transfer analysis behind air vehicle…
Job responsibilities
- Run CFD analysis of internal and high-speed flows, with and without combustion
- Start with hand calculations and 1D models to size a design, then move to 3D CFD to refine it
- Predict heat loads, surface temperatures, and pressures for the thermal and structural teams
- Set up gas properties and chemistry appropriate to the conditions being modeled
- Support rocket nozzle, insulation, and case design decisions with analysis
- Build and document repeatable workflows so other engineers can run the same analysis
- Compare predictions against static fire and ground test data and improve the models
- Support material response and erosion analysis in high-temperature environments
Job requirements
- Master’s degree in Aerospace engineering, Mechanical Engineering, Chemical Engineering, Engineering Physics, or a related field
- Ability to obtain and maintain a U.S. secret security clearance
- 5+ years of experience in CFD, aerothermal, thermal, or combustion analysis
- Foundational understanding of compressible flow including shocks, choked flow, and supersonic nozzles
- Strong first-principles understanding of heat transfer and fluid dynamics, including conduction, convection, radiation, fluid flow, and transient thermal behavior
- Experience with commercial CFD code such as STAR-CCM+, Fluent, or similar, including meshing and driving a case to convergence
- Proficient in applying hand calculations and 1D models to independently validate CFD results
- Programming experience in Python, MATLAB, or similar
Similar jobs
Anduril · Software
Staff Software Engineer, Discovery
Boston, Massachusetts · Costa Mesa, California
Anduril · Software
Senior Forward Deployed Software Engineer, Strategic Defense
Costa Mesa, California · Seattle, Washington
Anduril · Software
Technical Recruiter, Software - Air Dominance and Strike (Contract)
Boston, Massachusetts · Costa Mesa, California
Anduril · Software
Technical Recruiter, Software - Air Dominance and Strike (Contract)
Seattle, Washington · Costa Mesa, California
