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Commonwealth Fusion Systems (CFS)

Senior Cybersecurity Engineer

Become a Senior Cybersecurity Engineer at Commonwealth Fusion Systems in Devens, Massachusetts. This role focuses on enhancing cybersecurity compliance and protecting sensitive data. Enjoy competitive compensation, equity, flexible vacation days, and professional growth opportunities.
Commonwealth Fusion Systems (CFS)
Commonwealth Fusion Systems (CFS)
Devens, Massachusetts, United States   Hybrid   Full Time   USD 110k–185k yearly  UTC-05:00

Commonwealth Fusion Systems (CFS)

Company Overview

Commonwealth Fusion Systems

Cambridge, MA, United States

2018

Business Model

Energy

Commonwealth Fusion Systems focuses on developing advanced fusion energy technology. Their core activities include research and development of superconducting magnets and fusion reactors aimed at providing a clean and virtually limitless energy source.

Their revenue streams primarily come from government grants, private investments, and partnerships with various organizations in the energy sector.

Locations & Geography

Commonwealth Fusion Systems operates primarily in the United States, with a significant presence in Cambridge, MA. They are also involved in international collaborations, expanding their influence in the global energy landscape.

Company Culture

Their mission is to accelerate the development of fusion energy to provide a sustainable and clean energy future. They value innovation, collaboration, and a commitment to scientific excellence.

Commonwealth Fusion Systems fosters a dynamic and inclusive work environment that encourages creativity and teamwork. Employees are motivated to push the boundaries of science and technology in a supportive atmosphere.

They emphasize continuous learning and professional growth, offering various training programs and opportunities for employees to advance their skills in the field of fusion energy.

Activities & Projects

Commonwealth Fusion Systems is currently working on the SPARC project, which aims to demonstrate net-positive energy from a fusion reactor. This project is a significant step towards commercial fusion energy.

They are pioneering the use of high-temperature superconductors in fusion technology, which enhances the efficiency and feasibility of fusion reactors. This innovation is crucial for making fusion energy a reality.

Their sustainability practices focus on developing clean energy solutions that minimize environmental impact. By harnessing fusion energy, they aim to provide a sustainable alternative to fossil fuels.

Career Opportunities

Commonwealth Fusion Systems typically has openings for roles in engineering, research, and project management. They seek individuals passionate about advancing fusion technology and contributing to a sustainable energy future.

They offer competitive salaries, comprehensive health benefits, and opportunities for professional development. Employees also enjoy a collaborative work culture that values innovation and creativity.

Contact Information

LinkedIn

cfs.energy

Careers at Commonwealth Fusion Systems


Last updated on 2025-03-27 | 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 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 Senior Cybersecurity Engineer

CFS is seeking a highly skilled and experienced Senior Cybersecurity & Compliance Engineer to join the dynamic IT organization. This critical role offers a unique opportunity to directly shape and uphold the highest standards of security and data privacy for our cutting-edge solutions.

As the primary driver for internal compliance, you will be instrumental in maturing and maintaining our robust cybersecurity compliance posture across a diverse portfolio of industry standards, including ISO 27001. The Cybersecurity Engineer integrates security requirements into IT systems, conducts vulnerability assessments, maintains secure baselines, and implements best practices while collaborating with architects. You will collaborate extensively across the IT organization and with broader CFS teams, benefiting from the deep compliance and security expertise that exists within the wider organization. This ensures our innovative solutions not only meet but consistently exceed stringent regulatory requirements. You will use the expertise and credentials gained through these compliance efforts to strategically support all employees across all sites. This position demands a blend of deep technical expertise in compliance and privacy, exceptional cross-functional communication skills, and a proactive, strategic approach to safeguarding sensitive data and fostering trust.

Your leadership and hands-on contribution will be vital in ensuring our organization remains at the forefront of security and compliance, protecting sensitive data and building unwavering trust with our employees.

What you'll do

  • Ensure safe use of cloud services by developing cloud infrastructure security standards
  • Deploy tools to monitor compliance of cloud infrastructure
  • Perform ongoing assessments to monitor cloud infrastructure compliance and vulnerabilities
  • Perform security assessment of new cloud infrastructure platforms
  • Integrate security requirements into IT systems.
  • Conduct regular vulnerability assessments and penetration testing to identify potential risks and weaknesses.
  • Develop and implement effective remediation strategies for identified security gaps.
  • Implement system hardening and compliance
  • Implement and integrate static and dynamic code analysis tools
  • Research and evaluate Cybersecurity tools and methodologies
  • Collaborate with cyber and product architects to harden platforms and tool chains
  • Define and enforce secure-by-default software engineering practices
  • Ensure compliance documents remain up-to-date, including system policies, procedures, controls, data maps, and customer documentation. Model efficiency in your own work, and arm subject matter experts with content, tools, and direction to minimize their effort

What we’re looking for

  • Bachelor’s degree in Computer Science, Cybersecurity, Engineering, or a related field; additional experience, certifications or training may be considered in lieu of degree
  • 6+ years of relevant IT/ DevOps/Security Engineering experience
  • Self-starting individual with the right attitude, aptitude to identify, take ownership of and solve challenging problems
  • Interest in continual learning and development of the team and themselves
  • Ability to work collaboratively and independently to develop creative solutions
  • Passion for securing and maintaining IT and OT systems critical to national and international security
  • Project management skills
  • Great numerical and analytical skills
  • Possess Excellent problem-solving skills
  • Have attention to detail and excellent communication skills, both written and verbal
  • Have an agile mindset to provide solutions quickly with an incremental value to customers

Bonus points for

  • Beginner to intermediate Windows, Linux and Networking skills
  • Familiarity with tools like Rapid7/Metasploit, CrowdStrike, Snyk and KnowBe4
  • Experience in hardening modern operating systems and implementing security engineering best practices.
  • Familiarity with cloud security platforms such as AWS, Azure, or Google Cloud.
  • Experience with NIST Cybersecurity Framework, ISO 27001, NIST 800-171 (CMMC), or Risk Management Framework (RMF)

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.

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About the role

August 31, 2025

Full Time

Company

August 31, 2025

Hybrid

USD 110k–185k yearly

Commonwealth Fusion Systems (CFS)

cfs.energy

  •  Devens, Massachusetts, United States

6+ years of relevant IT/DevOps/Security Engineering experience

UTC-05:00

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