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Senior Power Electronics Engineer
Job Location:
Job Location:
Devens, MA - USA
Yearly Salary:
$ 110000 - 185000
Yearly Salary:
Posted:
14 June 2026 (30+ days ago)
Posted:
Application Deadline:
8 October 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
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 were designing and building commercially viable fusion power plants. And were working with policymakers and suppliers to build the energy industry of the future.
Were in the best position to make it happen. Since 2018 weve raised nearly $3 billion in capital making us the largest and leading private fusion company in the world.
Now were looking for more thinkers doers builders and makers to join us. People wholl bring new perspectives solve tough problems and thrive as part of a team.
If thats you and this role fits we want to hear from you.
Join the power movement as a Senior Power Electronics Engineer
Senior 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.
What youll do:
- Design model simulate analyze and validate power electronics circuits magnetic components and control strategies for medium voltage power electronic converter systems (i.e. power supplies)
- Define components and develop technical requirements and specifications for power electronic converter systems and other electrical designs
- Develop test methods to qualify design from concept through final testing and commissioning steps including troubleshooting of converter systems
- Contribute to cross-functional technical design activities to design build and deliver electrical system designs for fusion power
- Collaborate with cross-functional teams on critical procurement contracts & vendor coordination efforts of critical technical and other project milestones
- Define requirements and lead initial commissioning activities for power electronic systems
- Document design specifications simulations and test results into engineering reports
What were looking for:
- 8 years of related experience with Bachelors degree (or) a Masters degree with 6 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
- Knowledge of various inverter circuit topologies and the benefits and limitations
- Experience with modeling & simulation with analysis tools such as PLECS PSPICE MATLAB etc
- Experience with semiconductor devices (IGBT MOSFET etc.) and magnetic components (transformers inductors etc.)
- Fundamental understanding of gate drive circuits design and device protection
- Experience with packaging design of power conversion equipment and thermal management
- Experience with high power electrical equipment >10MW
- Experience with hands on testing of electrical components sub-assemblies and systems in the laboratory and use of oscilloscopes and other measurement equipment
- 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:
- Masters degree in electrical engineering with a 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 typing 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
$110000 - $185000 a year
Salary range for this full-time position equity benefits.The actual salary will depend on level location qualifications and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations.
Benefits include:
Competitive compensation with equity
13 Company-wide Holidays
Flexible vacation days
10 sick days
Generous parental leave policy
Health dental and vision insurance
401(k) with employer matching
Professional growth opportunities
Team-building activities
#LI-Onsite
#CFS-EX
At CFS we excel in fast-paced environments driven by our values of integrity execution impact and self-critique. As we grow were 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.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively Export Control Laws). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
Required Experience:
Senior IC
