Power Electronics Engineer - Flight Hardware

Cis Lunar Industries transforms power to run space by developing power infrastructure hardware and software for the space economy, specializing in power processing units (PPUs) for electric propulsion and spacecraft power distribution.

Our work supports both government and commercial missions and focuses on developing reliable hardware and systems that can operate in the harsh environment of space.

Our power electronics and avionics teams build real flight hardware on aggressive timelines. We are a hands‑on engineering organization where software and hardware are developed side‑by‑side to rapidly design, test, and deploy new capabilities.

We are looking for a Power Electronics Engineer to help own the next generation of our power processing units and other space power systems.

This is a hands‑on flight hardware role. Simulation and analysis matter here, but they are only useful if they lead to hardware that can be built, tested, debugged, improved, and integrated into a real system.

The ideal candidate is a strong individual contributor who can carry a power electronics subsystem from early concept through working integrated hardware. That includes simulation, schematic design, design reviews, mechanical and thermal constraints, PCB layout, prototype build support, bring‑up, tuning, test, troubleshooting, and integration into the larger system.

You do not need to have worked specifically on plasma power electronics. Experience with electric propulsion PPUs, spacecraft power systems, high‑voltage DC/ DC converters, pulsed power, aerospace/defense power supplies, harsh-environment electronics, or other high-reliability power systems can all be highly relevant.

We are open to a range of experience levels, including senior engineers, but we care more about demonstrated hardware ownership than years of experience alone.

You will join a small, multidisciplinary hardware team building flight power systems across electrical, mechanical, firmware, test, and systems engineering. The electrical design team brings experience in power electronics, radiation effects, space hardware, test, and systems integration. You will also have senior technical mentorship from a principal power electronics engineer with decades of experience.

You will work closely with electrical, mechanical, firmware, and systems/test engineers to move designs from analysis and schematic through layout, build, bring‑up, qualification, and integration.

This role is a good fit for someone who wants technical ownership, close collaboration, and strong mentorship while staying on an individual contributor path.

• Own power electronics designs from requirements and architecture through integrated test.
• Design, simulate, and develop high‑voltage and high‑power converter hardware for space applications.
• Support and mature power processing units for electric propulsion systems, including Hall Effect Thruster PPUs.
• Improve existing designs for manufacturability, testability, reliability, thermal performance, EMI/EMC behavior, and integration.
• Perform schematic capture and PCB layout work in KiCad.
• Review and guide PCB layouts with attention to high‑voltage clearance, high‑current paths, switching loops, parasitics, grounding, EMI, thermal paths, and connector interfaces.
• Work through mechanical packaging constraints, flight housings, mounting approaches, connector locations, harnessing, and thermal interfaces.
• Plan and execute board bring‑up, prototype testing, tuning, debugging, and design verification.
• Diagnose failures across design, layout, assembly, test setup, firmware interaction, and system integration.
• Collaborate closely with firmware engineers on controls, telemetry, fault handling, startup/shutdown behavior, and test automation.
• Work with mechanical engineers on packaging, thermal design, mounting, vibration constraints, and integration into flight assemblies.
• Support environmental and qualification testing, including thermal vacuum, vibration, EMI/EMC, and acceptance testing.
• Help transition hardware from one‑off prototypes to repeatable low‑volume flight builds.
• Create clear technical documentation,…