Thermal Engineer Intern (Fall 2025) - Astranis

Job Title: Thermal Engineer Intern (Fall 2025)
Job Location: San Francisco
Job Listing URL: https://job-boards.greenhouse.io/astranis/jobs/4391651006
Job Description: As a team, we’ve launched five satellites into orbit, signed ten commercial deals worth over $1 billion in revenue, raised over $750 million from top global investors, and recruited a team of over 400 world-class engineers. We all work out of our (legendary) San Francisco office, which was once used to build ships during the World Wars.

Our satellites, which operate from geostationary orbit (GEO), weigh only 400 kg and utilize a proprietary software-defined radio payload. Each satellite can connect over two million people, and we’re very excited for the impact we’ll soon have in the Philippines, Peru, Mexico, and more!

Backed by substantial funding and a passionate, collaborative team, we offer a rewarding work environment where you'll learn and make a significant impact, no matter where you are in your career.

Thermal Engineer — Intern

Internships at Astranis typically last for twelve weeks, and are hourly roles designed for students who are currently enrolled at a four-year university.

As an Intern, you will have an amazing opportunity to work on hard problems — we pride ourselves on giving everyone at Astranis a chance to do meaningful work on complex projects, no matter their seniority. Many past interns have designed and tested hardware/software that is heading to space on our first satellite, and many of them are now full-time employees at Astranis.

If you have already graduated from a four-year university, please apply to be an Associate Engineer.

Role

Work together with the engineering team to design, evaluate, build, and test satellite hardware and/or software.

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 in the installation of thermal hardware as needed.

Plan and run thermal vacuum testing and verification at the component and spacecraft level.

Requirements

Currently pursuing a B.S. or M.S. in mechanical, aerospace, or equivalent technical degree (e.g. physics or applied math)

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

Demonstrated ability to personally design, build, and test hardware from scratch.

US Citizenship or Green Card

Don't meet them all? Not a problem. Please apply even if you do not meet all these criteria.

Bonus

Experience with CAD

Experience with analytical software thermal analysis such as ANSYS and Thermal Desktop

Experience with electronics systems design and packaging

Experience (projects or previous internships) related to aerospace

The base pay for this position is $29.00 per hour.
Base Hourly Pay
$29—$29 USD
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.