Multiphysics Engineer, High Speed Reacting Flow

Anduril Industries

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Work type
On-site
Location
Costa Mesa, CA
Salary
$129,000–$171,000 / yr
Posted
4 days ago
Freshness
Confirmed live today

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Competitive pay

How this pay compares to similar roles

Similar $170k
This role $150k
$121k most similar roles pay here $207k

This role pays less than 66% of similar roles. Most pay $146,500–$193,000 — the shaded band above. At the midpoint, this role pays about $150k versus about $170k for comparable roles.

Based on 240 similar postings.

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About Anduril Industries

Anduril Industries is a defense technology company that builds advanced hardware and software systems for national security, including autonomous drones, surveillance systems, and the Lattice AI command platform.

Anduril Industries currently has 1830 open roles on FindRole.

Listed pay typically runs $146,000–$194,000 across 1614 roles with salary data.

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TL;DR · Multiphysics Engineer, High Speed Reacting Flow

Multiphysics Engineer, High Speed Reacting Flow The Multiphysics Engineer joins the Multiphysics Team to own internal flow, combustion, and heat transfer analysis for air vehicle propulsion systems. This role involves performing CFD analysis on high-speed flows with or without combustion, transitioning from 1D models and hand calculations to 3D simulations to refine designs. The engineer will predict heat loads, surface temperatures, and pressures while establishing gas properties and chemistry for various conditions. Key responsibilities include supporting rocket nozzle, insulation, and case design decisions, building repeatable workflows, and validating predictions against static fire and ground test data. Required expertise includes compressible flow, heat transfer, and fluid dynamics. The role requires proficiency in commercial CFD codes like STAR-CCM+ or Fluent, as well as programming in Python or MATLAB. Technical tasks focus on solving complex problems involving high-temperature environments and reacting flows.

What you'll do

  • Perform CFD analysis of internal and high-speed flows involving combustion.
  • Size designs using hand calculations and 1D models before refining them with 3D CFD.
  • Predict heat loads, surface temperatures, and pressures for thermal and structural teams.
  • Define gas properties and chemistry appropriate to the specific conditions being modeled.
  • Support rocket nozzle, insulation, and case design decisions through technical analysis.
  • Build and document repeatable workflows for other engineers to execute consistent analyses.
  • Validate predictions against static fire and ground test data to improve model accuracy.
  • Analyze material response and erosion in high-temperature environments.

What we're looking for

  • Master’s degree in Aerospace, Mechanical, 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.
  • Experience with commercial CFD code such as STAR-CCM+, Fluent, or similar.
  • Proficiency in applying hand calculations and 1D models to independently validate CFD results.
  • Programming experience in Python, MATLAB, or similar; technical writing skills are required.
  • PhD in a related field (preferred).
  • Active U.S. Secret or Top Secret security clearance (preferred).
  • Experience with solid rocket motors, propulsion systems, or energetic materials (preferred).
  • Experience with reacting flow modeling, chemistry/gas property tools, and high-temperature flows (preferred).

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