Thermal Engineer Intern (Fall 2026)

About this role

Astranis seeks a thermal engineer intern for a 12-week fall 2026 internship to support satellite design and testing. You'll conduct thermal analysis, design cooling solutions, and collaborate with engineering teams on hardware destined for orbit.

What you'll do

• Perform thermal analysis at varying fidelity levels on satellite components including propulsion systems, batteries, electronics, and PCBs
• Design and evaluate thermal solutions such as heaters, heat pipes, and thermal interface materials
• Support hardware design, evaluation, and testing in collaboration with engineering teams
• Develop integration and assembly processes to maintain thermal design specifications
• Plan and execute thermal vacuum testing at component and spacecraft levels
• Assist with design trade-offs balancing performance, resources, risk, cost, and schedule

What they're looking for

• Thermal analysis and design
• CAD software
• Thermal analysis software (ANSYS, Thermal Desktop)
• Hardware design and prototyping
• Electronics systems design and packaging
• Technical documentation and procedures
• Problem-solving in fast-paced environments
• Team collaboration

Benefits

• $29/hour base pay
• 12-week internship duration
• Meaningful work on hardware launching to space
• Mentorship from experienced engineering team
• Potential conversion to full-time employment
• San Francisco headquarters location with 153,000 sq. ft. facilities