Power Electronics 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 be responsible for designing some of the highest power systems ever flown in space. You will be able to develop a broad range of power electronics devices ranging from power switching to power conversion components capable of operating in the harshest space environments. In your first 6 months you will prototype your first high power devices and execute environmental and performance testing to refine your designs. In your first year you will qualify your hardware for flight and begin designing even more capable devices for future generations of spacecraft. In your first two years you will have flown your power devices in space and developed novel designs across all power domains.

Responsibilities

• Develop power electronics for large spacecraft with power systems ranging from 20kW to 100kW capability
• Serve as Responsible Engineer for flight hardware from conception through flight
• Qualify your designs through environmental testing including vibration, shock, thermal, and thermal vacuum testing
• Work with partners/customers to define interfaces between the power system and various spacecraft loads
• Develop models to analyze and verify power system performance

Qualifications

• Bachelor’s degree in electrical engineering
• 5+ years of professional design experience with power electronics (research and extracurricular academic projects qualify)

Nice to Have

• Proficient with circuit simulation tools such as LTspice