Hermeus
Hermeus24d ago
New
USD 91800–140250/yr

Thermal Engineer

United StatesUnited States·Los AngelesFull-timemid
OtherThermal Engineer
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Quick Summary

Key Responsibilities

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,

Technical Tools
OtherThermal Engineer
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

~3 min read

As a Thermal Engineer at Hermeus, you will be responsible for analyzing, designing, and implementing thermal solutions for various components and systems in our high mach vehicles. 

  • Thermal Analysis: Conduct detailed thermal analyses and simulations using state-of-the-art tools and software to model heat transfer, thermal loads, and thermal behavior during all phases of mach3+ flight.
  • Thermal System Design: Design and develop efficient thermal management systems, including heat shields, thermal protection materials, insulation, and active cooling systems to ensure the integrity and reliability of critical vehicle components.
  • Material Selection: Evaluate and select appropriate materials with high-temperature capabilities and thermal resistance for thermal protection and heat dissipation in hypersonic environments.
  • Hot metallic structure analysis: Analize and test novel ways to reduce thermal induces stress and deflections.
  • Integration: Collaborate with multidisciplinary engineering teams, including aerodynamics, propulsion, structures, and materials, to seamlessly integrate thermal solutions into the overall vehicle design.
  • Testing and Validation: Plan, conduct, and analyze thermal tests in laboratory environments and during flight tests to validate thermal models and verify the performance of thermal systems under real-world conditions.
  • Innovation: Stay up to date with the latest advancements in thermal engineering, aerospace materials, and heat transfer technologies. Continuously seek innovative approaches to enhance thermal efficiency and performance.
  • Documentation: Prepare technical documentation, reports, and presentations to communicate thermal analysis results, design decisions, and recommendations to stakeholders and project teams.
  • Work hand in hand with responsible engineers to develop simple and robust thermal solutions for a high temperature environment 
  • Bachelor's degree in mechanical, aerospace, or thermal engineering (or a related field). A master's is advantageous.
  • Proficiency in thermal analysis software and computational tools (e.g., ANSYS, CFD) thermal desktop, for thermal simulations and modeling.
  • Proven experience in thermal engineering, heat transfer analysis, or thermal management systems in aerospace, high-speed vehicles, or related fields.
  • Solid understanding of aerospace materials, high-temperature alloys, and material behavior under extreme thermal conditions.
  • Strong analytical and problem-solving skills with an ability to work on complex thermal challenges and propose effective solutions.
  • Effective communication skills to collaborate with cross-functional teams and present technical information clearly and concisely.
  • Adaptability and a willingness to thrive in a fast-paced and dynamic research and development environment.
  • Experience participating in a collegiate engineering competition team such as Formula SAE (FSAE), Design/Build/Fly (DBF), Baja SAE, Rocketry, or a comparable hands-on engineering organization is highly preferred.
  • 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.

    What We Offer

    ~1 min read
    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

    Location & Eligibility

    Where is the job
    Los Angeles, United States
    On-site at the office
    Who can apply
    US

    Listing Details

    Posted
    July 9, 2026
    First seen
    July 9, 2026
    Last seen
    August 1, 2026

    Posting Health

    Days active
    0
    Repost count
    0
    Trust Level
    79%
    Scored at
    July 9, 2026

    Signal breakdown

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    HermeusThermal EngineerUSD 91800–140250