Commonwealth Fusion Systems
Senior Power Electronics Engineer
$134K–$205K
Devens, MA · On-site · Senior · Full-time · Posted Oct 29, 2026
- Experience
- 8+ years with a Bachelor’s degree, or 6+ years with a Master’s degree.
- Education
- Bachelor’s degree or Master’s degree; the posting does not specify an equivalent-experience alternative.
- Visa sponsorship
- Employment offer contingent on compliance with U.S. Export Control Laws.
About the job
Leads the design, simulation, prototyping, testing, and qualification of high-power medium-voltage power supplies and converter systems for fusion power plants.
What you'll do
- Architect and design >10MVA power supplies using Si and SiC semiconductor devices; develop and qualify devices and components.
- Model and simulate circuits, and build, test, and validate prototype 4Q power modules.
- Productize qualified designs, document engineering results, and support cross-functional electrical power system development.
What they ask for
- 8+ years of related experience with a Bachelor’s degree, or a Master’s degree with 6+ years of experience in power electronics based systems.
- Hands-on product development experience with power electronic converter systems and experience with high-power electrical equipment >10MVA.
- Experience with modeling and simulation tools, semiconductor devices, magnetic components, gate-drive circuits, equipment packaging, and thermal management.
- Hands-on laboratory testing of electrical components, sub-assemblies, and systems using oscilloscopes and other measurement equipment.
Nice to have
- Master’s degree in electrical engineering focused on Power Electronics; experience applying compliance standards such as IEC, UL, CSA, or NEC.
- Experience with root cause analysis, prototype build and testing, or intelligent gate-drive circuit design.
Pay
USD 134,000–205,000 per-year-salary; base salary
Tools
PLECS, PSPICE, MATLAB, Si, SiC, IGBT, MOSFET
Model-written summary · the original posting is authoritative