Manager, Diagnostic Support Equipment
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 Manager, Diagnostic Support Equipment
The SPARC Diagnostics Team is divided into multiple teams to facilitate the deployment of hardware, the development and management of staff, as well as to establish a point of decision making between the Diagnostic Team Lead and the individual system leads in cases where there are zero-sum trade-offs and multi-system design optimizations that need to be made. Three of these DIAG teams are instrumentation teams focused on the delivery of hardware that will be used in day-to-day SPARC operations. This position focuses on a fourth team which is responsible for delivering equipment that provides functional support, but does not participate in the transformation of the signal from plasma to bits. This support equipment is highly interface constrained and helps to provide solutions between instrumentation systems within DIAG or between DIAG and other structural members (e.g. the building or vacuum vessels). When viewed from outside of DIAG, the distinction between support equipment and instrumentation effectively vanishes, but internal to DIAG this breakdown helps to facilitate speed and quality.
The Manager of the Diagnostic Support Equipment (DSE) team is expected to provide team leadership as well as carry out responsibilities of an individual contributor on an as needed basis to help facilitate the delivery of DSE hardware. The role of the Manager will evolve over the course of the SPARC project as systems move from design to operation, but is envisioned to have the Primary Responsibilities listed below. Candidates will work as part of an integrated team that includes many interfacing systems as well as science staff from outside of CFS. Experience working on tokamak or fusion plasma diagnostics is not required and CFS welcomes applications from non-tokamak or non-fusion backgrounds that can help deliver SPARC's diagnostic capabilities.
What you'll do
- Proactively identify where challenges faced by one or more instrumentation teams can be best solved by creating or modifying a common sub-system
- Work with teams inside of CFS (SysEng, Safety, etc.) to path-find how to verify the designs of Diagnostic Support Equipment systems that are unique or first-of-a-kind for the Tokamak Hall or Diagnostic Labs
- Ensure the completion of the design of Diagnostic Support Equipment and communicate risks and needs to the Diagnostic Team Lead
- Shepherd the completion of PASY/SASY for DSE systems, communicating safety concerns, risks and needs to the Diagnostic Team
- Provide line-management support to the Diagnostic Support Equipment Team, which presently consists of the system leads and dedicated engineers and designers
- Assist system leads in maintaining communication and well-defined interfaces with non-DSE systems, both inside and outside of DIAG
- Identify where the overall complexity in SPARC Diagnostics could be reduced through shared design solutions, and act as decision maker for 'Tier-2' changes relevant to support equipment
- Assist the Diagnostic Team Lead in managing scope, budget and schedule risk, including approving purchase orders/engineering orders within agreed upon limits
- Ensure the planning and delivery of DSE components to ensure instrumentation systems to achieve Commissioning and Operations milestones on-schedule
- Will supervise a team of ~10 engineers and scientists
What we're looking for
- Bachelor's degree in a relevant engineering field (mechanical, aerospace, civil or nuclear), with advanced degrees improving the job execution
- Experience in design, fabrication and installation of similar equipment for a project or facility: equipment platforms, cabling/piping, shielding
- Prior experience with line management is encouraged, but candidates at a minimum must demonstrate leadership experience, e.g. leading a team to accomplish a goal/mission or to deliver a product
- Ability to direct staff accomplishing complex tasks where your full understanding may not be possible.
- Responsibly managing a budget
- Be able to maintain productivity while also experiencing high-levels of context switching
Must-have requirements
- Ability to occasionally lift up to 50 lbs
- Perform activities such as typing, standing, 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
$150,000 - $225,000 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
- 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 2, 2025
Full Time
Company
January 9, 2026
On-site
USD 150k–225k yearly
- Devens, Massachusetts, United States
Mid to Senior level
UTC-05:00
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