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Commonwealth Fusion Systems

Electrical Technician (m/w/d)

Become an Electrical Technician with Commonwealth Fusion Systems in Massachusetts. Support the Power Electronics team by testing and commissioning power systems for fusion energy. Enjoy a competitive hourly rate and the chance to work on groundbreaking technology in a dynamic environment.

Commonwealth Fusion Systems

Company Overview

Commonwealth Fusion Systems (CFS)

Cambridge, MA, United States

2018

Approximately 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.

Contact


Last updated on 2026-01-02 | 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 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 nearly $3 billion in capital, making us the largest and leading private 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 Contract Electrical Technician

Electrical Technician in the Power Electronics team at CFS will work under the direction of the Lead Electrical Test Technician. Responsibilities include receipt, installation, configuration, testing, validation, and commissioning support of prototype and production level power electronics-based converter systems and DC battery storage systems at a large scale for SPARC to produce fusion power.

Responsible for tactical implementation of tasks within the power electronics team and also support cross functional teams with technical and tactical needs. Aid in the development, assembly, and operation of new test platforms and will report test results and data to the design responsible engineers.

This role is on-site at Devens, MA for system installation & commissioning and at Somerville, MA for advanced development prototype testing.

Daily interface with the power electronics team will open opportunities to further technical skill set and ability to solve complex problems with various sub-systems.

What you'll do

  • Individual contributor in electrical sub-system and system level testing and validation, knowledge in controls and programming is a plus
  • Ability to understand electrical schematics, general layout drawings, simulation results, specifications and engineering reports
  • Perform repeated sub-system level inspection, installation, configuration, and commissioning
  • Experience working as part of a team on advanced development and system implementation is a plus
  • Proactively procure or build all tools, fixtures, or manipulation equipment required for the upcoming tests per schedule
  • Attend design reviews and provide feedback from the test perspective to the engineering team
  • Assist in the testing with regards to root cause analysis and field failures is a plus
  • Hands on work with Low Voltage (<1000V) and Medium Voltage systems (>1000V up to 35kV)
  • Collaborate with engineering teams proactively to seek feedback and meet all the requirements defined

What we're looking for

  • Associate's degree in electrical technology or a related field in technology or equivalent certification or extensive experience with Electrical systems
  • 2-3 years of Electrical Experience demonstrating hands on installation, testing and validation
  • Experience working with Low Voltage (<1000V) AC & DC systems over 120 Volts
  • QEW training in Low Voltage, Medium Voltage systems and Arc Flash Safety
  • Experience with control hardware and programmable logic controllers
  • NEC / NFPA 70E, Electrical Safety
  • Experience working with Medium Voltage (>1kV up to 35kV)

Bonus Points For

  • Lifting operations experience Knowledge of assembling sub-systems and prototype systems
  • Experience with highly complex electrical systems
  • Experience with fast-paced and dynamic construction, manufacturing, or assembly/integration builds
  • Experience working on complex electromechanical and/or mechanical systems

Must-have requirements

  • Occasionally lift up to 50 lbs
  • Perform activities such as typing, standing, and 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

$35 - $45 an hour

This is a contract position.

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.

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.

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About the role

November 27, 2025

Contract Position

Company

January 2, 2026

On-site

USD 35–45 per hour

Commonwealth Fusion Systems

cfs.energy

  •  Somerville, Massachusetts, United States
  •  Devens, Massachusetts, United States

2-3 years of Electrical Experience

UTC-05:00

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