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Senior Aerothermal Engineer



Atlanta, GA, USA · Los Angeles, CA, USA
Posted on Friday, October 13, 2023
Hermeus is an aerospace and defense technology company founded to radically accelerate air travel by delivering hypersonic aircraft. The company aims to develop hypersonic aircraft quickly and cost-effectively by integrating hardware-rich, iterative development with modern computing and autonomy. This approach has been validated through design, build, and test of the company’s first combined turbojet-ramjet engine and is now being scaled through its first flight vehicle program, Quarterhorse. Hermeus is also developing Darkhorse — an uncrewed hypersonic aircraft designed to deliver unique asymmetric capabilities to the warfighter.
Hermeus is seeking a Senior Aerothermal Engineer to support the development of our hypersonic aircraft programs. As an Aerothermal Engineer, you will play a crucial role in designing, analyzing, and optimizing the thermal performance of our hypersonic vehicles and propulsion systems. Your expertise will contribute to advancing cutting-edge technologies and enabling revolutionary aerospace capabilities. This individual will work closely with the thermal team, and interface with the fluids systems, propulsion, and structures teams.


  • Conduct comprehensive thermal analysis and simulations to ensure the optimal performance of hypersonic vehicles and propulsion systems.
  • Design and develop innovative thermal management systems to handle extreme temperatures encountered during hypersonic flight.
  • Collaborate with multidisciplinary teams to integrate thermal solutions seamlessly into the overall vehicle design.
  • Perform computational fluid dynamics (CFD) simulations and analysis to assess aerodynamic effects on thermal properties.
  • Analyze test data from thermal experiments and flight tests to validate and improve thermal models and simulations.
  • Identify potential thermal-related issues and develop proactive mitigation strategies to enhance vehicle reliability and safety.
  • Optimize heat shielding and thermal protection materials to withstand high-speed flight conditions.
  • Conduct research on emerging thermal technologies and propose their implementation for future projects.
  • Support the development of thermal test plans and contribute to the execution of thermal testing campaigns.


  • Bachelor's degree in aerospace engineering, mechanical engineering, or a related field.
  • 3-5 years of experience in thermal analysis and design within the aerospace or hypersonic industry.
  • Proficiency in using CFD software and other relevant engineering tools for thermal simulations.
  • Strong knowledge of aerodynamics, heat transfer, and thermodynamics principles.
  • Familiarity with thermal protection systems (TPS) and thermal management technologies.
  • Ability to work collaboratively in a fast-paced, dynamic environment with multidisciplinary teams.
  • Excellent problem-solving skills and a proactive approach to challenges.
  • Detail-oriented with a keen eye for accuracy in analysis and design.
  • Strong communication skills to convey technical concepts effectively.

Desired Multipliers:

  • 5+ years of hands-on experience in compressible fluid dynamics
  • Experience in fast-paced design environment
  • Ability to obtain and maintain a US Security Clearance.
We encourage you to apply even if you have skillsets and experience outside of our current needs as we're always open to connect and discuss future opportunities.