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Apex manufactures satellite buses at scale for commercial space applications, combining software, vertical integration, and hardware designed for manufacturing. The company enables earth observation, communications, and other space-based services.
As a Radiation Effects Engineer, you will be a key technical point of contact for all space environment qualification and design topics. You will serve as the focal point for spacecraft electronics radiation susceptibility, with responsibility for hardening reliable space systems. This role requires deep technical expertise in radiation effects testing and analysis.
Key Responsibilities:
- Establish and own radiation qualification campaigns for critical new-generation electronics
- Operate radiation test equipment, including total dose sources and pulsed laser equipment
- Provide radiation-tolerant recommendations to product designers through part selection, circuit design, passive/active radiation mitigations, and mission design recommendations
- Support business development and mission integration by contributing to proposals, requirements development, customer briefings, and design reviews (SRR, PDR, CDR) with radiation assessments
- Own the budget, schedule, plan, and execution of radiation test campaigns at external facilities (protons, heavy ions, gamma, neutron) or through third-party partners
- Provide unit and mission-level radiation analyses including SEE rates, availability estimates, cumulative dose exposures, and associated verification artifacts
- Maintain and grow the parts and materials library databases with critical piece-part and material information accessible to all designers
- Enforce Radiation Hardness Assurance across various buses, products, and individual components
- Coordinate closely with product designers to continually evolve, test, and maintain radiation parts and materials libraries
- Provide radiation analysis capabilities to ensure spacecraft shielding and electronics design meets compliance requirements for harsh environments ranging from LEO to GEO
Requirements:
- B.S. in Electrical Engineering, Physics, Nuclear Engineering, or related field
- 2–5 years of experience in radiation effects and/or reliability engineering for aerospace systems
- Expertise with radiation tools (AE9/AP9/SPM, CREME96, OMERE, SPENVIS) for environmental and requirements definition
- Familiarity with industry radiation standards (MIL-STD-750, MIL-STD-883, ECSS-Q-ST-60-15C, MIL-STD-3053, NASA testing guidelines)
- Experience budgeting, scheduling, and executing SEE, TID, and DDD test campaigns, including test evaluation hardware/kit development and testing FPGAs and microprocessors
- Proficiency with data analysis and modeling software (Python, MATLAB, or equivalent)
- Familiarity with circuit simulation tools (e.g., LTSpice) with experience in design and/or analysis of digital and analog circuits
- Strong lab experience with oscilloscopes, logic analyzers, source meters, power supplies, and automating data collection
- Effective communication skills to clearly convey radiation risks and mitigation to diverse stakeholders
Preferred:
- M.S. or Ph.D. in Electrical Engineering, Physics, Reliability Engineering, or related field
- Hands-on experience with scripting, automation, and programming languages (Python, MATLAB, JMP, C/C++, SQL)
- Familiarity with radiation transport and shielding analysis tools (FASTRAD)
- Familiarity with space charging effects on materials and electronics
- Experience with anomaly resolution and documentation of anomaly reports and lessons learned databases
Note: ITAR compliance required. Applicants must be U.S. citizens, nationals, lawful permanent residents, refugees, or asylees, or able to obtain required export authorizations.
