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Commonwealth Fusion Systems (CFS)

Facilities and Maintenance Technician (m/w/d)

Become a Facilities and Maintenance Technician with Commonwealth Fusion Systems in Somerville and Devens, Massachusetts. You'll perform preventive and corrective maintenance on complex manufacturing equipment and support installation projects. Enjoy competitive pay, flexible vacation days, and a generous parental leave policy while contributing to the future of fusion energy.

Commonwealth Fusion Systems (CFS)

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 2025-12-26 | 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 Facilities and Maintenance Technician

The Maintenance Technician will be responsible for installation of and maintenance for various facilities and manufacturing equipment. These responsibilities will be based at our campus in Devens, Massachusetts but may periodically be asked to perform work in our Somerville, Massachusetts location.

What you'll do

  • Perform preventive and corrective maintenance of complex manufacturing equipment such as CNC machining centers, process ovens and specialty manufacturing equipment
  • Provide maintenance support for projects such as the installation, relocation, or modification of manufacturing equipment.
  • Provide second shift maintenance coverage for CFS buildings and facilities equipment
  • Utilize a Computerized Maintenance Management System (CMMS) for tracking the maintenance and repair of equipment and facilities systems
  • Assist in the development of maintenance procedures and schedules

What we're looking for

  • High school diploma/equivalency certificate or higher
  • Minimum of 3 years experience in a manufacturing or industrial environment
  • Minimum of 7 years experience in the mechanical, electrical, hydraulic and plumbing repair of complex manufacturing equipment and the plant systems that support them
  • Demonstrated ability in reading/understanding technical and electrical drawings, manuals and reports
  • Proficiency with MS Office products such as Word, Excel, Project and PowerPoint
  • Ability to take directions from Supervisors and work independently
  • Desire to work and contribute in a fast-paced, startup R&D environment with daily changes
  • Excellent communication (written and verbal) and teamwork skills
  • Meticulous attention to detail and cleanliness with hands-on work
  • Ability and patience to work through projects from start to finish, including assembly and testing

Bonus points for

  • Experience with lean manufacturing, 5S, and Six Sigma principles
  • Forklift experience
  • Crane or lifting experience

Must-have requirements

  • Ability to lift up to 50 lbs occasionally
  • Perform activities such as typing, standing, stooping, climbing, and sitting for extended periods of time
  • Dedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics
  • Willingness to occasionally travel or work required nights/weekends/on-call

$30 - $43 an hour

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
  • 12.5 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

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

December 12, 2025

Full Time

Company

January 2, 2026

On-site

USD 30–43 per hour

Commonwealth Fusion Systems (CFS)

cfs.energy

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

Minimum of 7 years in mechanical, electrical, hydraulic, and plumbing repair

UTC-05:00

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