F100 MRO

Hermeus

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Los Angeles, CA on site Until 8/21/2026 3+ years exp First posted March 23, 2026 Last posted March 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 

The salary range listed for this role is intended as a general guideline. Final compensation will be determined based on a variety of factors, including role scope and responsibilities, relevant experience, education and training, key skills, market data, and business needs.

At Hermeus, compensation is only one part of our total rewards package. We offer competitive pay, equity, and a range of benefits designed to support our team.

Benefits:

  • Health & Wellness: 100% employer-paid healthcare and pet insurance
  • Financial: Competitive pay, stock options, 401(k) retirement plan, and potential year-end bonuses
  • Time Off: Paid parental leave, 12 federal holidays, unlimited PTO for exempt employees, and generous accrued PTO for non-exempt employees
  • Office Perks: Weekly paid office lunches and fully stocked breakrooms
 
U.S. EXPORT CONTROL COMPLIANCE STATUS 
The person hired will have access to information and items subject to U.S. export controls, and therefore, must either be a “U.S. person” as defined by 22 C.F.R. § 120.62 or otherwise eligible for deemed export licensing. US persons include U.S. citizens, U.S. nationals, lawful permanent residents (green card holders), and asylees and refugees with such status granted, not pending. 
 
EQUAL OPPORTUNITY
Hermeus is an Equal Opportunity Employer. Employment decisions at Hermeus are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.
 

Compensation (from employer):
91800–187450 USD per year

About this role

Summary

Manage F100 engine maintenance, refurbishment, and testing to support hypersonic aircraft development

Job title

MRO Propulsion Engineer

Experience level

3+ years

Minimum experience

3+ years exp

Industry

defense

Location requirements

on-site in los angeles, CA, with travel

Salary

$92k–$187k

Management role

No

Skills & keywords

Required skills

aerospace engineeringmechanical engineeringF100 MROthermodynamicsmaterials science

Preferred skills

F100 MRO or similar experiencejet or rocket hardware designCAD GD&TANSYShigh-temperature alloys

Specializations

aerospacepropulsionhardwarethermal dynamicsmaterials science
Locations

Structured locations inferred from the posting.

Los Angeles, CA, USA

On-site City
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