Commonwealth Fusion Systems

Environmental, Health & Safety Technician - Weekend First Shift (Fri, Sat, Sun)

Join Commonwealth Fusion Systems in Massachusetts as an Environmental Health & Safety Technician on weekend shifts. Support safety and environmental compliance, manage hazardous waste, and ensure regulatory adherence. Enjoy competitive pay with equity, flexible vacation, and comprehensive benefits in a fast-paced fusion energy company.

Commonwealth Fusion Systems

Company Overview

Name

Commonwealth Fusion Systems (CFS)

Headquarters

Cambridge, MA, United States

Founded

2018

Size

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.


Last updated on Feb 23, 2026 | Report an issue

Job Description

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 an Environmental Health & Safety Technician

The Environmental Health & Safety Technician will support environmental, health and safety initiatives at our Devens, Massachusetts as well as our Somerville, Massachusetts facility. The Environmental Health & Safety (EHS) Technician will be responsible for regulatory requirements relating to OSHA, RCRA, EPA, and DOT requirements. Works with engineers and technicians daily to ensure our team can achieve its missions while meeting all environmental, health, and safety objectives.

Weekend 1st shift - Hours: 6:00 am - 6:00 pm, Fri - Sun, 15% differential

What you'll do

  • Health and Safety

    • Ensure that safety equipment, such as fire extinguishers, fall protection equipment, first aid kits, AEDs, safety showers, and eyewash stations are properly maintained, inspected, and serviced according to regulations and manufacturer recommendations
    • Ensure that lifting and rigging equipment is being maintained in accordance with regulations and manufacturers recommendations
    • Calibrate fixed and portable gas detection devices in accordance with regulations and manufacturers recommendations
    • Facilitate safety inspections and audits (e.g., ladders, walking working surfaces) using checklists or guides to ensure equipment and facilities are maintained in a safe and compliant manner
    • Provide direct safety oversight by identifying and correcting workplace hazards and unsafe conditions observed
    • Assist with employee exposure assessments (i.e., industrial hygiene monitoring)
    • Assist in the implementation of site-specific safety programs
    • Ensure notification and immediate corrective actions when an unsafe condition is found or reported
    • Assist with incident investigations
  • Environmental

    • Assist with the management of recyclables, universal waste, waste oil, and hazardous waste
    • Monitor levels of hazardous waste in satellite accumulation areas
    • Ensure all waste is properly labeled
    • Ensure all waste is properly stored, according to its classification
    • Record and maintain 90-day hazardous waste drum logs, hazardous waste sign in sheets, VOC solvent usage logs, and related records
    • Perform weekly hazardous waste and hazardous material storage area inspections
    • Assist in waste shipments with the waste disposal contractor
    • Perform weekly stormwater inspections per the SWPPP
    • Perform tasks related to spill response/prevention
    • Assist with implementing the spill prevention countermeasures and control plan (SPCC)
    • Perform environmental compliance and due diligence audits

What we're looking for

  • High school diploma or equivalency certificate
  • 2+ years of experience implementing and overseeing aspects related to an environmental, health and safety program
  • Previous experience in a construction/industrial environment
  • Ability to work in a high-volume, fast paced environment
  • Required experience in performing safety oversight in an industrial environment
  • Requirement of knowledge of regulatory requirements from agencies like OSHA, EPA, DEC, RCRA, and others

Bonus points for

  • Experience in managing hazardous waste storage and satellite accumulation areas
  • Experience implementing/developing health and safety plans and programs
  • Experience with emergency response incidents involving hazardous and non-hazardous material releases to air, soil, and water
  • Demonstrated strong propensity for hands-on work and attention to detail in either academic or career pursuits
  • Ability to multitask, to manage shifting priorities and to follow through on projects with minimal supervision
  • Strong organizational and communication skills

Must-have requirements

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

$30 - $48 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
  • * 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

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.

Apply now

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About the role

September 2, 2026

September 2, 2026

Full time

On-site

Company

US$30–48 hourly

Hydrogen

Commonwealth Fusion Systems

cfs.energy

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

2+ years in environmental, health and safety

UTC-05:00