Astranis Space Technologies · 7 hours ago
Senior Thermal Analyst
San Francisco
Full-time
Onsite
Senior Level
$140K/yr - $180K/yr
6+ years expAstranis builds advanced satellites for high orbits, expanding humanity’s reach into the solar system. As a Senior Thermal Analyst, you will serve as the technical authority on thermal modeling and simulation, focusing on the virtual validation of vehicle thermal systems and collaborating with mechanical designers to ensure effective thermal architectures.
AerospaceInternetSatellite CommunicationTelecommunications
No H1B
U.S. Citizen Only
Responsibilities
Create thermal models of varying complexity and fidelity in Thermal Desktop and/or ANSYS Mechanical
Perform high-fidelity thermal analysis on critical hardware including propulsion systems, RF payloads, batteries, and PCBs
Refine and enforce analysis best practices among the thermal team, owning the framework for model reviews, file management and analysis quality
Make strategic decisions on analysis fidelity (simplified to detailed) based on project needs
Collaborate with mechanical designers to identify feasible thermal architectures during conceptual and preliminary design phases, using analysis to drive decision-making
Correlate thermal models to ground thermal vacuum test data as well as on-orbit thermal data from our operating fleet of spacecraft
Mentor and support junior engineers, hold training sessions and support the improvement of team analysis practices
Assist in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team
Qualification
Required
Bachelor of Science degree in engineering or physics
6+ years of experience in a thermal/mechanical role
Expert-level proficiency in Thermal Desktop and/or ANSYS Mechanical or Icepak; comfortable debugging complex models and customizing solver inputs
Experience performing model correlation for complex system level thermal models
A deep, fundamental understanding of heat transfer (radiation, conduction, and convection) and thermodynamics
Proficiency with mechanical CAD
Ability to distill complex analysis data into clear recommendations for the design team
U.S. Citizenship, Lawful Permanent Residency, or Refugee/Asylee Status Required
Preferred
Experience using Python, MATLAB, or Fortran to automate analysis generation, post-processing, or link thermal models with other physics solvers
Specific experience with PCB-level thermal analysis (trace mapping, component-level modeling)
Experience analysing for the space environment
Experience physically setting up and running Thermal Vacuum (TVAC) tests
Benefits
Equity
Robust benefits
High-quality company-subsidized healthcare
Disability and life insurance
401(k) retirement planning
Flexible PTO
Free on-site catered meals
Company
Astranis Space Technologies
Astranis builds low-cost satellites for high orbits. Our first product, MicroGEO, offers the world’s lowest-cost satellite broadband.
201-500 employees
Funding
Current Stage
Late StageTotal Funding
$753.5MKey Investors
Andreessen Horowitz,BAM ElevateAndreessen HorowitzBlackRock
2024-07-24Series D· $200M
2023-04-14Series Unknown· $200M
2023-04-14Debt Financing
Leadership Team
Mark Mesler
Chief Financial Officer
Ryan McLinko
Cofounder
Recent News
2026-01-12
Andreessen Horowitz
2026-01-12
Satellite Today
2026-01-12
Company data provided by crunchbase