Thermal Engineer

Astranis, San Francisco, CA

Building the future of telecommunications satellites.

Duration: Full-Time

Astranis was founded in 2015 with the goal of connecting the four billion people in the world who do not have access to the internet. We improve access to internet connectivity by making smaller and more powerful satellites at a fraction of the cost and 5 times faster than our competitors.
Come join the world class team filled with subject matter experts who have demonstrated success in addressing a market that is untapped! Our commitment is backed by our most recent Series C funding of $250M along with the passion and hearts that drive Astranis.
Apply to be a part of our mission to connect the world!

Thermal Engineer

As an Astranis Thermal Engineer, you will design, analyze and test thermal solutions ranging from electronic chips to full spacecraft thermal vacuum tests.  You must have a strong analytical background as well as hands-on testing skills.  Experience with spacecraft or printed circuit board thermal mitigation are benefits but not required.


  • Mature designs through conceptual, preliminary, and detailed design phases using practical passive and active thermal control techniques.
  • Support design trades that successfully balance performance margins, resource use, risk, cost, and schedule.
  • Perform thermal analysis to varying degrees of fidelity (simplified to detailed) on a variety of different types of hardware such as propulsion components, batteries, high powered electronics, RF components, mechanisms, and printed circuit boards (PCBs).
  • Design, analyze, procure and test thermal solutions such as heaters, heat pipes, thermal interface materials, and surface coatings.
  • Develop processes and procedures for integration and assembly which ensure thermal design intent is met. Assist the integration and test team in the installation of thermal hardware as needed.
  • Plan and run thermal vacuum testing and verification at the component and spacecraft level.


  • Bachelor of Science degree in engineering or physics
  • Experience in thermal analysis and thermally-constrained design; computational thermal design experience (finite methods) is not required but highly preferred
  • Proficiency with mechanical CAD
  • A passion for hardware development, including working in a fast-paced environment and hands-on design and development
  • Don't meet them all? Not a problem. Please apply even if you do not meet all these criteria.


  • Experience with Thermal Desktop
  • Experience with ANSYS Mechanical or ANSYS IcePak
  • Experience with Electronics Packaging and Printed Circuit Board (PCB) design
  • Experience building and operating high vacuum systems
  • Experience designing for a vacuum environment or environments with large temperature swings

U.S. Citizenship, Lawful Permanent Residency, or Refugee/Asylee Status Required
(To comply with U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the United States, or other protected individual as defined by 8 U.S.C. 1324b(a)(3))
Our mission and our products are meant to connect the world and everyone in it, regardless of gender, race, creed, or any other distinction. We believe in a diverse and inclusive workplace, and we encourage all people to join our team and bring their unique perspective to help make us stronger.

About Astranis

We are taking on one of humanity's most important challenges.

Four billion people do not have access to the internet. Astranis is going to change that.
We are building the next generation of smaller, lower-cost telecommunications satellites to bring the world online.

Join us and work with top engineers who have flown things in space before.
We are a well-funded team that moves fast.


Want to learn more about Astranis? Visit Astranis's website.