Senior Spacecraft Power Systems Architect

Portalsystems; Bothell (WA); On-site; USD 140,000 - 210,000; Full time

Job summary

Portal Space Systems in Bothell, WA is seeking a Senior Electrical Engineer specialized in spacecraft power systems and bus architecture to lead hardware design from concept through verification.

You will design power subsystems, manage battery and solar interfaces, develop PCB layouts, and collaborate across disciplines to meet mission requirements. ITAR considerations and strict reliability standards apply.

Qualifications

• B.S. or M.S. in Electrical Engineering, related field or equivalent.
• 5+ years of experience designing power systems for aerospace, spacecraft, or other high-reliability platforms.
• Experience with power electronics design, including DC-DC converters, battery management systems, and overcurrent/undervoltage protection circuits.
• Experience using ECAD tools (e.g., Altium Designer) for board design and system schematics.
• Experience testing and debugging flight or flight-like power hardware in lab and system testbeds.

Responsibilities

• Architect and design spacecraft power systems including solar array interfaces, battery charge/discharge regulation, power distribution units (PDUs), and system-level grounding schemes.
• Lead development of the main spacecraft power bus: voltage regulation, load management, protection, and redundancy strategies.
• Perform trade studies and system sizing for battery capacity, solar array performance, and bus architecture optimization.
• Develop schematics, PCB layouts, and cable harnessing for power boards and interface hardware.
• Drive hardware bring-up, functional testing, and fault isolation on power boards and integrated systems.
• Collaborate with systems, mechanical, and thermal engineers to align EPS design with mission requirements and spacecraft constraints.
• Contribute to environmental testing for acceptance and qualification and EMI/EMC compliance for power hardware.
• Coordinate with Launch Providers on interfaces and concept of operations during payload integration, launch pad and waking up in space.

Skills

Power systems design

Power electronics

Battery management systems

DC-DC converters

Overcurrent/undervoltage protection

ECAD tools (Altium Designer)

Education

B.S. or M.S. in Electrical Engineering

Tools

Altium Designer

Job description

Portal Space Systems in Bothell, WA is seeking a Senior Electrical Engineer specialized in spacecraft power systems and bus architecture to lead hardware design from concept through verification.

You will design power subsystems, manage battery and solar interfaces, develop PCB layouts, and collaborate across disciplines to meet mission requirements. ITAR considerations and strict reliability standards apply.