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Hermeus·Los Angeles, CA·On-site

Mechanical Engineer

full time·1+ yrs exp·Posted Feb 19, 2026

Job description

Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Department of War to provide the high-speed capabilities our nation and its allies need to maintain a durable, asymmetric advantage.

Responsibilities

  • Structural design supporting vehicle subsystems such as hydraulics, fuel systems, propulsion, and avionics
  • Perform structural and thermal analyses using both hand calculations and FEA
  • Lead trade studies across mechanical, fluid, and avionics subsystems with an emphasis on mass efficiency, cost, and performance
  • Collaborate with manufacturing, supply chain, and test teams to ensure designs are practical, producible, and aligned with program objectives
  • Own hardware development from concept through design, fabrication, integration, and test
  • Present technical content in internal reviews and represent the team in cross-functional and supplier/customer design reviews
  • Requirements

  • Bachelor’s degree in mechanical engineering, aerospace engineering, or physics 
  • 1+ years of experience with electromechanical design, analysis, and testing (internships and significant student project experience qualify)  
  • Preferred Skills and Experience

  • Hands-on prototyping and mechanical assembly experience for complex systems
  • Strong foundation in engineering fundamentals including statics, dynamics, heat transfer, fluid mechanics, vibe
  • Proficiency in CAD (NX preferred), FEA (Ansys preferred), and PLM tools (Teamcenter preferred)
  • Familiarity with mechanical testing under conditions such as vibration, fatigue, shock, vacuum, and thermal loads
  • Experience collaborating across disciplines (e.g., fluids, avionics, manufacturing) to deliver integrated systems
  • Demonstrated cradle to grave ownership of technically complex projects
  • Additional Requirements

  • Willingness to travel up to 25% of the time
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