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Hermeus·Los Angeles, CA·On-site

F100 MRO

full time·3+ yrs exp·Posted Mar 23, 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.

About The Role:

As an MRO Propulsion Engineer you will take ownership of the maintenance, refurbishment, and overhaul (MRO) lifecycle of our F100 engines—including acceptance testing. This is a hands-on, high-impact role where you’ll work side-by-side with passionate engineers and technicians to keep our propulsion systems performing at their best. If you want to learn fast, solve hard problems, and contribute directly to hypersonic capability, this is the place for you.

Responsibilities

  • Own all or a significant portion of the F100 MRO lifecycle

  • Collaborate daily with cross-disciplinary engineers and technicians

  • Drive high-quality, safe, and efficient refurbishment processes

  • Support testing campaigns and engine acceptance activities

  • Contribute to a fast-paced environment where engineering and execution come together

Requirements

  • Bachelor’s or advanced degree in Aerospace or Mechanical Engineering

  • 3+ years of F100 MRO experience, or experience with a similar-thrust class engine

  • 2+ years of professional experience designing flight propulsion hardware

  • Strong engineering fundamentals in:

    • Combustion
    • Thermodynamics
    • Heat transfer
    • Fluid dynamics
    • Structural dynamics
    • Materials science

Preferred Skills and Experience

  • 6+ years of F100 MRO or equivalent experience
  • 4+years designing jet or rocket propulsion hardware with CAD +GD&T
  • Proven responsibility for flight-proven hardware
  • Experience with: air-breathing combustors, augmenters, ignition systems, variable-area nozzles, turbomachinery, high-temperature mechanical assemblies
  • Siemens Teamcenter + NX
  • ANSYS
  • High-temperature alloy design and manufacturing
  • Additively manufactured metal alloys
  • Jet fuel experience
  • Generating work instructions and managing nonconformances
  • Instrumentation selection and usage for ground or flight test
  • Hands-on experience with machining, welding, or hardware integration
  • Hardware certification for flight operations, including test asset development

Additional Requirements

  • Willingness to travel to support build and test campaigns

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