Radiation Effects Engineer

K2 is building the largest and highest-power satellites ever flown, unlocking performance levels previously out of reach across every orbit. Backed by over $1 billion in total funding from leading investors including Altimeter Capital, ICONIQ, Kleiner Perkins, Lightspeed Venture Partners, Redpoint Ventures, and T. Rowe Price — and with over $1 billion in signed contracts across commercial and US government customers, we're mass-producing the highest-power satellite platforms ever built for missions from LEO to deep space. The rise of heavy-lift launch vehicles is shifting the industry from an era of mass constraint to one of mass abundance, and we believe this new era demands a fundamentally different class of spacecraft. Engineered to survive the harshest radiation environments and to fully capitalize on today's and tomorrow's massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits. With multiple launches in 2027 and plans to scale to 100 satellites a year, we're Building Bigger — helping develop the solar system and build toward a Kardashev Type II (K2) civilization. If you are a motivated individual who thrives in a fast-paced environment and you're excited about contributing to the success of a high-growth Series D-funded company, we'd love for you to apply. The Role   You will play a critical role in the qualification, implementation and reliability of our satellite’s avionics hardware in the most intense radiation environments of space. You will own the rapid development of component, board and subsystem level radiation test setups that you will execute at national labs across the country, while growing the team’s capabilities through test rack and automation development to keep up with our growing business needs. Through detailed analysis and reporting of your test results, you will inform hardware designers and mission planners of how to confidently operate our satellites to meet our Commercial, National Security and science customer’s needs. You will demonstrate excellent test engineering fundamentals and a high level of attention to detail to ensure our hardware and test capabilities are second to none.   Prior experience in radiation effects testing is preferred but not required; strong electrical lab skills and a willingness to learn are essential.   Responsibilities   Execute cradle-to-grave radiation test campaigns (SEE, TID, DDD and materials) through coordinating test facilities/dates, designing electrical test setups, writing test procedures, executing tests, and documenting results   Design, fabricate, and assemble production quality test racks, test PCBAs, and cable harnesses   Troubleshoot, repair, and modify electronic components, assemblies, parts, and systems   Perform tests and checkouts using standard lab equipment such as programmable power supplies, ohmmeters, oscilloscopes, DMM, SMU, logic analyzers and DAQs.    Develop basic test automation, data collection and analysis scripts in Python   Own the scheduling and prioritization of component, board and subsystem radiation testing to support the hardware and vehicle lifecycle   Flash firmware and perform software load verifications under the direction of engineering team members   Qualifications   Bachelor’s degree in electrical engineering or related science, technology, engineering field or 3+ years  of experience assembling, integrating, and testing electrical components, assemblies and/or hardware in the aerospace industry (internship plus professional experience included)    1+ years of experience with radiation effects testing, including TID and SEE testing using proton, heavy ion, gamma, neutron, or other radiation sources (internship plus professional experience included)   Strong electrical engineering fundamentals, with the ability to determine appropriate measurement methods, instrumentation, and test setups for voltage, current, timing, and digital I/O measurements   Experience conducting electrical measurements and characterizing signals (voltage, current, timing, digital I/O) using standard lab equipment such as oscilloscopes, programmable power supplies, SMUs, DMMs, function generators, and logic analyzers   Nice to Have   Familiarity with designing circuits and setups around common components such as transistors, regulators, digital/analog components and RF devices   Strong fundamentals of radiation effects in semiconductor devices, including how to mitigate common failure modes   Demonstrated ability in soldering and crimping as well as assembling cable harnesses and connectors   Demonstrated ability to document work clearly and follow structured test processes   Familiarity with FPGA or microcontroller-based test systems   Experience designing, building, and testing electrical assemblies, fixtures and test racks   Experience designing PCBs using common EDA tools (e.g., Altium, KiCad, OrCAD)   Ability to c reate,  read, review, and redline electrical and test rack schematics   Experience developing modular, reusable test automation software and drivers in Linux, C++, Rust, Python, Visual Studio, etc.   Strong troubleshooting skills and attention to detail   Strong communication skills with ability to communicate hardware, systems, and scheduling problems and solutions   Additional Requirements   Must be available to travel up to 25% of the year to support radiation tests   Valid Driver's license    Compensation and Benefits:   Salary range for this exempt role is $100,000 - $150,000 + equity in the company   Compensation will be based on several factors including, but not limited to: knowledge and skills, education, and experience level   Comprehensive benefits package including paid time off, medical/dental/vision coverage, life insurance, paid parental leave, and many other perks   If you don’t meet 100% of the preferred skills and exp