Senior Multiphysics Engineer, High Speed Reacting Flow

The Multiphysics Teams 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 this role you will own the internal flow combustion and heat transfer analysis behind air vehicle propulsion systems.

We are looking for strong fundamentals in compressible flow and heat transfer and a track record of quickly delivering useful results.

• 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
• Work with aerodynamics thermal structures materials and test engineers
• Present results at design reviews and document the analysis

• Masters 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
• Clear technical writing and the ability to present results to customers
• Passion for defending the United States and her allies

• PhD in a related field
• Active U.S. Secret or Top Secret security clearance
• Experience with solid rocket motors propulsion systems or energetic materials
• Experience with reacting flow modeling finite-rate or equilibrium chemistry and species transport
• Experience with chemistry and gas property tools such as NASA CEA Cantera or CHEMKIN
• Experience selecting solvers and flux schemes for shock-dominated flows
• Experience with high-temperature or high-enthalpy flow
• Experience with ablative or charring materials and surface heat transfer
• Experience with multiphase or particle-laden flow
• Experience with exhaust plumes jet interaction or base flow
• Experience comparing models against instrumented test data
• Scripting and automation experience (Python STAR-CCM Java macros or Fluent journaling and UDFs)
• Graduate research in aerothermodynamics combustion propulsion or thermal protection materials and systems

The salary range for this role is an estimate based on a wide range of compensation factors inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience education and/or training critical skills and/or business considerations. Highly competitive equity grants are included in the majority of full time offers; and are considered part of Andurils total compensation package. Additionally Anduril offers top-tier benefits for full-time employees including:

At Anduril we invest in our people. Our comprehensive competitive benefits package (available at little to no cost to employees) ensures youre supported in health recovery and whatever comes next.For more information Explore Our Benefits.

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