Senior Power Electronics Engineer

Commonwealth Fusion Systems•Devens, MA

1d•$134,000 - $205,000•Onsite

About The Position

Commonwealth Fusion Systems is developing commercially viable fusion power plants and is hiring a Senior Power Electronics Engineer to lead work on its Pulsed Electrical Distribution System (PEDS) team. The team is developing next-generation power supplies for ARC, its planned grid-scale commercial fusion power plant, and will use experience from SPARC as the technology is demonstrated. The engineer will architect, design, model, build, test, validate, and productize high-power medium-voltage power supplies and their components. The role also involves working with semiconductor manufacturers, developing requirements and qualification plans, supporting cross-functional electrical-power developments, and documenting engineering work. The position requires laboratory testing and work in a facility with industrial hazards. Salary is $134,000–$205,000 per year, plus equity and benefits; actual salary depends on level, location, qualifications, and experience.

Requirements

Bachelor’s degree and at least 8 years of related experience, or a Master’s degree and at least 6 years of experience, with power-electronics-based systems.
Hands-on product-development experience with power-electronic converter systems.
Knowledge of inverter circuit topologies and their benefits and limitations.
Experience modeling and simulating with tools such as PLECS, PSPICE, or MATLAB.
Extensive experience with semiconductor devices such as IGBTs and MOSFETs, and magnetic components such as transformers and inductors.
Fundamental understanding of gate-drive circuits, their design, and device protection.
Experience with packaging design for power-conversion equipment and thermal management.
Experience with high-power electrical equipment above 10 MVA.
Hands-on laboratory testing of electrical components, subassemblies, and systems, including use of oscilloscopes and other measurement equipment.
Excellent written and verbal communication skills.
Ability to lift up to 50 pounds.
Ability to stand, type, or sit for extended periods.
Willingness to travel or occasionally work required nights, weekends, or on-call.
Ability to work in a facility containing industrial hazards, including heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics.
Compliance with U.S. laws concerning export-controlled or protected technologies or information is required; any employment offer is contingent on this compliance.

Nice To Haves

Master’s degree in electrical engineering focused on power electronics.
Experience applying compliance standards to designs, such as IEC, UL, CSA, or NEC.
Experience in problem-solving, root-cause analysis, and field-containment actions.
Hands-on prototype building and testing, with documentation of results.
Intelligent gate-drive circuit design experience.

Responsibilities

Architect and design next-generation high-power (>10 MVA) medium-voltage power supplies for ARC tokamaks using silicon and silicon-carbide semiconductor devices.
Collaborate with power semiconductor manufacturers to develop and qualify devices for fusion applications.
Model and simulate power-electronic circuits and components to assess converter performance, efficiency, and stability.
Build, test, and validate prototype four-quadrant power modules, including H-bridges, DC links, passives, and thermal management.
Convert qualified prototype designs into productized solutions for ARC power supplies.
Develop technical requirements, specifications, and qualification plans for power-circuit components such as capacitors, magnetics, and passives.
Support cross-functional technical development of power distribution, energy storage, RF, and other systems that deliver electrical power for fusion applications.
Document designs, simulations, and test results in engineering reports.
Conduct design reviews and organize and present results to technical and non-technical audiences.