Role
Own the analytical model of the geostationary (GEO) radiation environment, modeling trapped particle populations (AP8/AP9, AE8/AE9), solar proton fluences (Sapphire), and galactic cosmic rays (CREME96)
Perform high-fidelity 3D Monte Carlo and sector-analysis radiation transport simulations using FASTRAD against complex spacecraft CAD assemblies to generate local, component-level dose-depth curves
Lead analytical studies on spacecraft charging, including surface charging (using NASCAP-2k or SPIS-SC) and internal charging (using FASTRAD internal charging calculations or SPIS-IC) to prevent electrostatic discharge (ESD) risks
Develop, scale, and maintain Python-based pipelines to process, analyze, and visualize transport simulation datasets, automating the generation of spacecraft-wide dose budgets
Translate complex simulation data into actionable engineering guidance for shielding allocation, material selection, and electrical grounding architectures
Requirements
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
Bonus
Master of Science or PhD in Nuclear Engineering, Nuclear Physics, or equivalent with a research focus on space radiation environments or spacecraft charging phenomena
Deep knowledge of deep dielectric charging failure mechanisms (ECEMP) and industry standard mitigations (grounding straps, conductive coatings, slot-venting geometries)
Familiarity with the ISO 11221 spacecraft charging standard or MIL-STD-883 Test Method 1019
What we offer
All our positions offer a compensation package that includes equity and robust benefits.
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.
Astranis pay ranges are informed and defined through professional-grade salary surveys and compensation data sources. The actual base salary offered to a successful candidate will additionally be influenced by a variety of factors including experience, credentials & certifications, educational attainment, skill level requirements, and the level and scope of the position.
Base Salary Level I
$110,000—$145,000 USD
Base Salary Level II
$140,000—$180,000 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 products are built for everyone, regardless of gender, race, creed, or background. We believe in a diverse and inclusive workplace, and we invite all people to join our team and bring their unique perspectives to make us stronger.
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