Astranis
Astranis builds advanced satellites for high orbits, expanding humanity’s reach into the solar system. Today, Astranis satellites provide dedicated, secure networks to highly-sophisticated customers across the globe— large enterprises, sovereign governments, and the US military. With five satellites on orbit and many more set to launch soon, the company is servicing a backlog of more than $1 billion of commercial contracts.
Astranis is the preferred satellite communications partner for buyers with stringent requirements for uptime, data security, network visibility, and customization. Astranis has raised over $750 million from some of the world’s best investors, from Andreessen Horowitz to Blackrock and Fidelity, and employs a team of 450 engineers and entrepreneurs. Astranis designs, builds, and operates its satellites out of its 153,000 sq. ft. headquarters in Northern California, USA.
Senior Radiation Test Engineer
As our Senior Radiation Test Engineer you will be responsible for characterization of radiation environments for our missions and testing analysis for our spacecraft. This position requires hands-on experience validating parts for radiation environments specific to aerospace.
Role
- Design fault tolerant electrical systems for operating in a radiation environment
- Simulate and model the GTO and GEO radiation environments
- Coordinate and run radiation testing campaigns to upscreen components
- Work with the structures team to determine the proper shielding levels across the spacecraft
- Integrate these systems into the spacecraft by working closely with the rest of the team
- Support other electrical design, bringup, and test activities
- Assist in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team.
Requirements
- Bachelor of Science degree in nuclear engineering, electrical engineering, physics, or equivalent technical field
- A passion for hardware development, including working in a fast-paced environment and hands-on design and development
- Experience with the Geostationary radiation environment (TID, SEE, DDD)
- Experience with designing for and testing for radiation effects
- Experience in testing analog and digital circuits
- Experience with high reliability systems
- US Citizenship or Green Card
Bonus
- Electromechanical design experience
- Experience running tests at radiation labs
- Experience with designing dosimeter circuits
- ECAD + MCAD Experience (Altium, Solidworks)
Base pay is just one component of Astranis’s total rewards package. Your compensation also includes a significant equity package via incentive stock options, high-quality company-subsidized healthcare, disability and life insurance, 401(k) retirement planning, flexible PTO, and free on-site catered meals.
To apply for this job please visit job-boards.greenhouse.io.
Explore Astranis online
Working in San Francisco
San Francisco, officially the City and County of San Francisco, is the fourth-most populous city in California and the 17th-most populous in the United States, with a population of 826,079 in 2025. Among U.S. cities with a population of 200,000 or more, San Francisco is ranked first by per capita income, second by population density, and sixth by aggregate income as of 2024. Some 4.6 million residents live in the city's metropolitan statistical area, which is the 13th-largest in the United States. Around 9.2 million live in the San Jose–San Francisco–Oakland combined statistical area, the fift
Market context
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