# Radiation Effects Engineer - Modeling at Astranis

- Company: Astranis
- What the company does: Backed by Y Combinator, a16z and Felicis.
- Company website: http://www.astranis.com
- Type: Startups
- Level: Mid level
- Location: San Francisco
- Work setup: On-site
- Posted: 2026-10-06
- Apply by: 2026-11-20
- Apply: https://job-boards.greenhouse.io/astranis/jobs/4719442006?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/astranis-radiation-effects-engineer-modeling/

## About the role

Astranis is bridging the digital divide by building and operating the next generation of smaller, lower-cost geostationary telecommunications satellites. As a Radiation Effects Engineer focused on modeling and theory, you will own the analytical definition of our spacecraft's radiation and charging environments, transforming physical theory into actionable design constraints. You will serve as an authority on radiation transport, orbital environment propagation, and charging physics. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Bachelor of Science degree in Nuclear Engineering, Physics, Electrical Engineering, or equivalent
- 2+ years of industry experience using radiation environment tools such as OMERE or SPENVIS and transport tools such as FASTRAD, Geant4, or MCNP
- Solid theoretical foundation in radiation interaction with matter, including ionization, non-ionizing energy loss, charge deposition, and secondary bremsstrahlung generation
- Experience modeling spacecraft charging physics and electric field buildup in dielectrics
- Proficiency in Python for mathematical post-processing, data scraping, and modeling automation
- High-degree of ownership and technical depth, ability to evaluate complex system trade-offs with sparse initial data

Tags: Radiation Effects

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/astranis-radiation-effects-engineer-modeling/