Thermal Engineer · Astranis

Fri, 24 Apr 2026 15:29:44 GMT
Engineering

Astranis · San Francisco · $100,000-$165,000 USD · onsite

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

Your responsibilities will include: 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, evaluate, 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. Collaborate with the integration and test team; provide assistance with the installation of thermal hardware as needed. Plan and run thermal vacuum testing and verification at the component and spacecraft level. Assist in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team.

Requirements: 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 and enthusiasm for hardware development, including working in a fast-paced environment and hands-on design and development

Bonus: Experience with Thermal Desktop Experience with Electronics Packaging and Printed Circuit Board (PCB) design Experience building and operating high vacuum systems