Senior Electrical Engineer
Commonwealth Fusion Systems
Company Overview
Commonwealth Fusion Systems (CFS)
HeadquartersCambridge, MA, United States
Founded2018
SizeApproximately 430 employees (source: zoominfo.com). Revenue figures vary, with reports indicating $211.3 million or $31.7 million, though as a pre-revenue fusion developer focused on R&D, these may reflect funding or operations rather than sales.
What They Do
Commonwealth Fusion Systems (CFS) is a pioneering private fusion energy company that specializes in tokamak-based magnetic confinement fusion. Founded as a spinout from MIT's Plasma Science and Fusion Center, CFS focuses on utilizing high-temperature superconducting magnets to achieve commercial net energy production (source: cfs.energy). The company has made significant strides in its technology, particularly with the development of compact fusion machines that leverage decades of tokamak science. Their flagship projects, SPARC and ARC, aim to demonstrate net energy gain and commercial viability in the coming years (source: cfs.energy).
Projects & Track Record
CFS is currently engaged in several groundbreaking projects, most notably the construction of SPARC, which is set to be the world's first net-energy fusion machine. Located at their Fusion Energy Campus in Devens, Massachusetts, SPARC aims to demonstrate net energy gain by the late 2020s (source: cfs.energy). Additionally, CFS is planning the ARC project, a 400 MW-class grid-scale tokamak power plant designed for commercial deployment in the early 2030s. These projects are underpinned by significant technological advancements, including the successful testing of the central solenoid magnet module (CSMC) in November 2024, which confirmed the manufacturability of critical components for SPARC (source: zoominfo.com).
Recent Developments
In the past two years, CFS has made remarkable progress, including the opening of its Devens Fusion Energy Campus on February 10, 2023, which was attended by notable figures such as U.S. Secretary of Energy Jennifer Granholm (source: cfs.energy). The company has also secured substantial funding, raising $863 million in August 2024, building on a previous $1.8 billion round in May 2023, bringing total funding to over $2 billion (source: wbjournal.com). Furthermore, CFS announced its first commercial power plant site in Chesterfield County, Virginia, which will be independently financed and operated, with plans for grid connection in the early 2030s (source: zoominfo.com).
Working There
CFS offers a range of roles across various disciplines, including fusion science, engineering, manufacturing, and materials science. The majority of their workforce is based at the Devens campus, which has grown to over 430 employees (source: cfs.energy). The company culture emphasizes rapid execution and transparency, attracting top talent from the fusion and manufacturing sectors. Key executives include Co-Founder and CEO Bob Mumgaard, along with other leaders in operations and science, indicating a strong demand for expertise in tough tech and physics (source: nasdaqprivatemarket.com). While specific benefits are not detailed, the scale-up and investor backing suggest competitive packages for high-caliber roles in a mission-driven environment (source: cfs.energy). Job seekers are encouraged to monitor their careers page for openings related to SPARC and ARC advancements.
Last updated on Feb 23, 2026 | Report an issue
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 we're working with policymakers, suppliers, and many others to build the energy industry of the future.
We're in the best position to make it happen. Since 2018, we've raised $4 billion of capital, making us the largest and leading fusion company in the world.
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 Senior Electrical Engineer
Senior Electrical Engineer reporting to the Manager of Power Electronics in the Pulsed Electrical Distribution System (PEDS) 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 you'll do
- Lead complex high power electrical designs for SPARC's pulsed power system.
- Develop technical requirements for vendor electrical equipment based on simulations and analysis of the SPARC power system.
- Develop test methods and test plans to qualify newly developed electrical designs.
- Lead the installation, test, and operations handover for electrical designs.
- Lead electrical work package releases (equipment list, drawings, schematics).
- Apply core electrical engineering knowledge and experience to design high power systems (including but not limited to switchgear, transformers, reactors, semiconductor devices, cooling systems and control systems).
- Develop control narratives, concept of operations, and commissioning procedures for newly developed electrical systems.
- Interface with SPARC cross functional teams including R&D, physics, construction, manufacturing, software, test, compliance & commissioning, etc. to ensure all requirements are met.
- Support critical procurement contracts & vendor coordination.
- Apply best electrical safety practices & compliance standards in design and implementation.
- Work on advanced development to develop in-house electrical power technologies for the future of CFS.
What we're looking for
- 8+ years of related experience with Bachelor's degree (or) a Master's degree with 6+ years of experience with power electronics based systems
- Ability to lead a technical team from conception of idea till implementation in a fast-paced environment
- Proven experience leading teams while also contributing technically to engineering projects
- Proven track record in design and implementation of power systems in the electrical power industry
- Extensive experience with Medium Voltage & Low Voltage systems (AC/DC power distribution, power conversion, energy storage solutions)
- Experience with modeling, simulation and analysis backed with validation via functional testing
- Excellent written and verbal communication skills, ability to conduct design reviews, organize and 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 systems and/or power electronics
- Experience in practical application of electrical engineering skills to construction, manufacturing, testing and field installations
- Experience with energy storage (batteries, capacitors etc.) is a plus
- 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
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
$110,000 - $185,000 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
Apply now
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Apply now
Job expired?Please let Commonwealth Fusion Systems know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
August 26, 2026
August 26, 2026
Full time
On-site
Company
US$110,000–185,000 annually
- Devens, Massachusetts, United States
8+ years or 6+ years with a Master's degree
UTC-05:00