Rejobs
Commonwealth Fusion Systems

Manager, Cybersecurity & Operations

Become the Cybersecurity Manager at Commonwealth Fusion Systems in Devens, Massachusetts. Lead the development and implementation of cybersecurity policies to protect information assets. Enjoy competitive compensation, equity, and flexible vacation days while working in a mission-driven environment focused on fusion energy.
Commonwealth Fusion Systems
Commonwealth Fusion Systems
Devens, Massachusetts, United States   On-site   Full Time   USD 110k–185k yearly  UTC-05:00

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 Manager, Cybersecurity & Operations

The Cybersecurity Manager will be responsible for leading and managing the company's cybersecurity program. This includes developing and implementing security policies, procedures, and controls to protect our information assets from cyber threats. The ideal candidate will have a strong technical background in cybersecurity, as well as experience in leading and managing a team of security professionals.

What you'll do

  • Develop, implement, and maintain a comprehensive cybersecurity program, including policies, procedures, and controls
  • Oversee the monitoring of our systems and networks for security breaches and investigate any incidents that occur
  • Conduct regular risk assessments and vulnerability scans to identify and prioritize security risks
  • Stay up-to-date on the latest cybersecurity threats and trends, and recommend and implement appropriate security measures
  • Manage the cybersecurity budget and ensure that resources are allocated effectively
  • Collaborate with other departments to ensure that security is integrated into all aspects of our business operations
  • Provide regular reports to senior management on the status of our cybersecurity program
  • Lead, mentor, and develop a high-performing team of cybersecurity professionals
  • Conduct regular performance reviews, provide constructive feedback, and support career path development for direct reports
  • Foster a collaborative and motivating team environment that encourages innovation and continuous improvement
  • Manage team workload, project prioritization, and resource allocation to ensure strategic goals are met
  • Participate in the recruitment, interviewing, and hiring of new team members to build team capabilities

What we're looking for

  • Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field
  • A minimum of 5 years of experience in a hands-on cybersecurity role
  • A minimum of 3 years of experience in a leadership or management position, with direct supervisory responsibilities
  • Proven experience in developing and implementing a corporate cybersecurity strategy and program from the ground up
  • Hands-on experience with incident response, threat hunting, and security investigations
  • Deep understanding of network security, endpoint security, identity and access management, and vulnerability management
  • Expert knowledge of current cyber threats, attack methodologies, and mitigation strategies
  • Strong leadership, communication, and interpersonal skills, with the ability to articulate complex technical concepts to non-technical stakeholders
  • Demonstrated ability to manage projects, prioritize tasks, and lead a team effectively

Bonus points for

  • Experience with securing cloud environments (e.g., Google Cloud, AWS, Azure)
  • Experience in a manufacturing or R&D environment, including the security of Operational Technology (OT) and SCADA/ICS systems
  • Experience with implementing and managing security programs aligned with frameworks such as NIST, ISO 27001, or CMMC
  • Professional cybersecurity certifications such as CISSP, CISM, CISA, or GIAC
  • Knowledge of data privacy regulations (e.g., GDPR, CCPA)
  • Familiarity with DevSecOps principles and integrating security into the software development lifecycle

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 occasionally travel or work required nights/weekends/on-call
  • 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
  • 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.

Get Job Alerts

Get job alerts for opportunities in Devens, Massachusetts, United States

About the role

November 24, 2025

Full Time

Company

January 24, 2026

On-site

USD 110k–185k yearly

Commonwealth Fusion Systems

cfs.energy

  •  Devens, Massachusetts, United States

5+ years in cybersecurity, 3+ years in management

UTC-05:00

Apply now

Job expired?

Please let Commonwealth Fusion Systems know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!

Discover how you’re connected

View connections

See your contacts at Commonwealth Fusion Systems on LinkedIn to leverage your network in applying for this position.