Space Test Engineer (Nuclear Power Systems)

Location: Los Angeles, United States. On-site work with long hours and weekends as needed for critical milestones. Applicants must be authorized under U.S. Government export regulations as a U.S. citizen or national, lawful permanent resident, refugee, asylee, or otherwise eligible to obtain the required authorizations.

Salary: $140,000–$190,000 per year, plus equity.

Company

hirify.global is a Series C startup developing mass-producible, inherently safe nuclear microreactors for terrestrial, underwater, and space applications.

What you will do

• Develop verification plans, test configurations, instrumentation, procedures, and pass/fail criteria for avionics, power electronics, sensors, and control systems.
• Design and execute avionics bench and integrated system tests covering electrical interfaces, telemetry, power sequencing, operating modes, fault detection, and recovery.
• Build automated test equipment and hardware-in-the-loop setups using programmable supplies, electronic loads, signal simulation, data acquisition, and flight-like hardware and software.
• Plan and conduct thermal vacuum, thermal cycling, vibration, shock, and EMI/EMC test campaigns, including coordination with external laboratories.
• Develop thermal performance and thermal balance tests for avionics, power conversion, and heat transport and rejection hardware.
• Analyze test data, lead readiness reviews and root-cause investigations, verify corrective actions, and document results for design decisions and verification closure.

Requirements

• Bachelor's degree in electrical, aerospace, mechanical, or another engineering discipline, or physics.
• 5+ years of hands-on test engineering experience with avionics, embedded electronics, or electrical subsystems.
• Experience developing procedures, building instrumented test setups, executing tests, and analyzing results.
• Experience with environmental or thermal testing, such as TVAC, thermal cycling, vibration, shock, or EMI/EMC.
• Experience using oscilloscopes, digital multimeters, programmable power supplies, electronic loads, and Python, LabVIEW, MATLAB, or similar tools.
• Must meet U.S. Government export-control eligibility requirements. Ability to lift 50 lbs and perform physical activities including standing, climbing, bending, and carrying is required.

Nice to have

• Experience qualifying spaceflight avionics or electrical hardware across multiple environmental disciplines.
• Experience with power management and distribution systems, motor drives, inverters, or integrated power conversion equipment.
• Experience with hardware-in-the-loop testing, fault injection, CAN, Ethernet, SPI, I2C, or RS-422.
• Experience operating TVAC chambers, conducting thermal balance tests, and correlating results with thermal models.
• Experience testing thermal management hardware such as heat pipes, heat exchangers, pumped fluid loops, or radiators.

Culture & Benefits

• Mission focused on advanced nuclear energy, defense, climate solutions, and space exploration.
• Values systems thinking, end-user focus, unconventional problem solving, nuance, and working directly with customers and stakeholders.
• Teams are built in person, with face-to-face stakeholder engagement and travel when needed.
• Significant stock option package in addition to salary.