Power Electronics Engineer, Spacecraft Power Systems

Cowboy Space Corporation; Seattle (WA); On-site; USD 120,000 - 175,000; Full time

Benefits offered by this job

Equity

Medical, dental, and vision insurance

401(k) retirement plan

Paid time off

10 paid holidays per year

Paid parental leave

Relocation assistance

Office lunch

Job summary

Cowboy Space Corp. is seeking a Power Electronics Engineer to design, develop, and validate spacecraft power systems from concept to flight.

You will collaborate with software, mechanical, solar, and propulsion teams to meet stringent performance and reliability standards for space applications. Responsibilities include designing DC-DC converters, BMS, and power control electronics, and executing comprehensive test plans, including HIL testing.

Qualifications

• Bachelor’s degree in Electrical Engineering or related field.
• 3+ years of experience designing or testing power electronics or avionics systems.
• Strong understanding of power electronics fundamentals (DC-DC conversion, control systems, power distribution).
• Experience with schematic capture, PCB design, and board bring-up.
• Familiarity with lab equipment (oscilloscopes, power supplies, electronic loads) and debugging techniques.
• Experience working in high-reliability or hardware-focused environments.

Responsibilities

• Own the design, development, and validation of spacecraft power electronics systems from concept through flight.
• Architect and implement power distribution systems, including power management, conversion, and regulation for spacecraft subsystems.
• Design and analyze DC-DC converters, battery management systems (BMS), and power control electronics for high-reliability environments.
• Develop and execute test plans for power systems, including functional, environmental, and hardware-in-the-loop (HIL) testing.
• Perform system-level analysis of power budgets, efficiency, thermal performance, and fault conditions.
• Implement protection and fault management strategies (overcurrent, overvoltage, short circuit, latch-up protection).
• Partner closely with structures, thermal, software, and payload teams to ensure seamless integration of power systems.
• Support board bring-up, integration, and debugging of power electronics in lab and flight environments.
• Investigate anomalies and drive root cause analysis to improve system robustness and reliability.
• Support vehicle integration, pre-flight testing, and on-orbit performance analysis.

Skills

Power electronics

Schematic capture

PCB design

Debugging techniques

High-reliability environments

Electrical engineering

Education

Bachelor's degree in Electrical Engineering

Tools

Oscilloscopes

Power supplies

Electronic loads

Job description

Cowboy Space Corp. is seeking a Power Electronics Engineer to design, develop, and validate spacecraft power systems from concept to flight.

You will collaborate with software, mechanical, solar, and propulsion teams to meet stringent performance and reliability standards for space applications. Responsibilities include designing DC-DC converters, BMS, and power control electronics, and executing comprehensive test plans, including HIL testing.