Power Electronics Engineer

Commonwealth Fusion Systems

190

Devens, MA, United States

Posted on: 2025-04-28

Category: renewables

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Employment type:

Full time

Experience required:

Intermediate

Salary

Salary not provided

About the company:

Commonwealth Fusion Systems (CFS) has the fastest, lowest cost path to commercial fusion energy.

CFS is collaborating with MIT to leverage decades of research combined with new groundbreaking high-temperature superconducting (HTS) magnet technology. HTS magnets will enable compact fusion power plants that can be constructed faster and at lower cost.

The mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. CFS has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by the world’s leading investors, CFS is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.

If you are interested in joining our team, check out cfs.energy/careers for more information.

About Commonwealth Fusion Systems:

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.

Combining decades of research, top talent and new technologies, we’re designing and building commercially viable fusion power plants. And working with policymakers and suppliers to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised over $2 billion in capital – more than any other fusion energy company in the U.S.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.

If that’s you and this role fits, we want to hear from you.

Join the power movement as a Power Electronics Engineer

Power Electronics Engineer reporting to the Director of Power Systems in the SPARC team at CFS. Responsible to lead and coordinate electrical design projects and interface with cross-function stakeholders while ensuring a high-quality design release that meets specifications, project timelines within budget allocated.

#LI-Onsite

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.

We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.

What you'll do:

Develop technical specifications for Medium Voltage & Low Voltage power electronics & electrical components

Design, model, simulate, analyze and validate power electronics circuits, magnetic components and control strategies for AC / DC medium voltage power supplies

Develop test methods to drive design from concept through final testing and commissioning steps including troubleshooting of power supplies

Contribute to technical design activities to design, build and deliver power electronics based electrical systems design for fusion power

Apply core electrical engineering knowledge and experience to design Medium Voltage & Low Voltage system designs

Interface with cross functional teams with focus on high quality design and implementation

Collaborate with cross functional teams on critical procurement contracts & vendor coordination efforts

Document design specifications, simulations and test results into engineering reports

What we’re looking for:

5+ years of related experience with Bachelor’s degree (or) a Master’s degree with 3+ years of experience with power electronics based systems

Proven track record in design and development (system, protection, control & mechanical integration) of power electronics based electrical systems

Experience with modeling & simulation with analysis tools such as PLECS, PSPICE, MATLAB etc.

Experience with semiconductor devices (IGBTs, MOSFETs etc.) and magnetic components (transformers, inductors etc.)

Experience with packaging design of power conversion equipment and thermal management

Experience with testing of electrical components, sub-assemblies and systems in the laboratory

Excellent written and verbal communication skills, ability to conduct design reviews, organize / present results to both expert and non-technical audiences

Results driven and ability to embrace and convince stakeholders on a change in design direction in pursuit of a high-quality product release

Bonus points for:

Master’s degree in electrical engineering with focus on Power Electronics

Experience in practical application of electrical engineering skills to construction, manufacturing, testing and field installations

Experience with application of compliance standards to the designs (IEC, UL, CSA, NEC etc.)

Experience in problem solving, root cause analysis and field containment actions

Experience with hands on prototype build, prototype testing and documentation of results is a plus

Experience with scaling up independent systems to a larger system to meet higher power requirements

Must-have Requirements:

Ability to lift up to 50lbs

Perform activities such as standing or sitting for extended periods of time

Willingness to travel or work required nights/weekends/on-call occasionally

Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics

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