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Thermal Engineer Seen this week

Cowboy Space · San Carlos, CA · Seattle, WA · Mechanical · first seen 2026-07-16

About Cowboy Space Corp

Cowboy Space Corp builds infrastructure to power and connect the orbital economy. Our satellites in Low Earth Orbit collect sunlight and enable new capabilities: powering on-orbit compute, transmitting energy via infrared lasers (space-to-earth and space-to-space), and delivering secure high-bandwidth optical data.

The Role

As a Thermal Engineer you will design, analyze, implement and demonstrate thermal management solutions for our space-based power and compute platform. You will develop thermal control strategies for high-power laser systems, high-power compute platforms, spacecraft electronics, and structural components operating in extreme space environments. The ideal candidate has experience with spacecraft thermal design, analysis, testing, and on-orbit demonstration, ensuring reliable performance in Low Earth Orbit.

Responsibilities

  • Develop spacecraft thermal management architectures, including active and passive cooling solutions for high-power and high-heat-flux components.
  • Utilize thermal simulation tools such as ANSYS Thermal Desktop to predict system behavior in space conditions.
  • Develop component- and system-level thermal models and identify optimum solutions considering size, weight and power.
  • Develop, support and execute thermal cycle and thermal-vacuum tests to demonstrate flight-worthiness of components, subsystems and spacecraft.
  • Collaborate with mechanical, electrical, and build and test engineers to ensure seamless integration of thermal management solutions.
  • Identify space-grade thermal materials, coatings, and insulation for spacecraft structures.
  • Conduct failure mode analysis and implement redundancy in thermal control systems.
  • Work with optics, avionics, and propulsion teams to address thermal constraints in system design.

Basic Qualifications

  • Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related field.
  • 3+ years of experience in thermal analysis and design of spacecraft thermal systems.
  • Proficiency with thermal modeling software such as ANSYS Thermal Desktop.
  • Strong understanding of thermodynamics and heat transfer fundamentals.
  • Experience designing, selecting and testing thermal hardware (e.g., radiators, heat pipes, thermal interface materials, and heaters).
  • Demonstrated experience of spaceflight hardware qualification and acceptance testing of flight components, and the margins associated with those.
  • Familiarity with vacuum chamber thermal testing.

Preferred Qualifications

  • Master's or PhD in Mechanical Engineering, Aerospace Engineering, or a related discipline.
  • 5+ years of experience designing thermal systems for spacecraft, launch vehicles and/or high-power and heat-flux applications.
  • Hands-on experience with spacecraft thermal integration and flight testing.
  • Experience with OpenTD and python scripting.
  • Strong analytical skills and ability to solve complex thermal design challenges.

Compensation

  • Salary: $150,000 to $200,000 annually, depending on experience and qualifications.
  • Equity in Cowboy Space Corp.
  • Medical, dental, and vision insurance.
  • 401(k) retirement savings plan.
  • Paid time off, 10 paid holidays per calendar year.
  • Paid parental leave.
  • Relocation assistance if applicable.
  • Daily lunch in the office and fully stocked kitchen.

ITAR Requirements

To conform to U.S. Government space technology export regulations including ITAR, applicants must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

Thermal Engineer at Cowboy Space Corp | Flight Proven Space