About Commonwealth Fusion Systems:

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 over $2 billion in capital – more than any other fusion energy company in the U.S.

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 Marketing Intern

We are seeking a dynamic and motivated intern to join our marcom team to assist with both external and internal communications projects. If you have strong writing skills, an interest in communication, and a desire to learn in a fast-paced environment, we’d love to hear from you!

Program Details:

12-16 week internship program
40-50 hours per week with set hourly salary based on year in school
Opportunity available in Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing
Specific project assignments and required technical skillset will vary based on the team’s existing need.
Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD
Interns must be authorized to work in the United States for any employer

What you’ll do:

Writing press releases and other materials to enhance both internal and external communications
Creating internal newsletters that keep everyone at CFS up-to-date on company news and events
Organizing company events, from logistics to communication, ensuring smooth execution and effective promotion

What we’re looking for:

Strong Writing Skills: You can express ideas clearly and effectively in writing and are comfortable drafting different kinds of communication materials
Interest in Communications: You’re curious about how communication works, both inside and outside a company, and you’re excited to learn more about corporate communication.
Collaborative Spirit: You enjoy working in a team, collaborating with different people on various projects.
Attention to Detail: You make sure everything is accurate and high-quality, because you pay close attention to the details.

Essential Requirements:

Willingness to travel or work required nights/weekends/on-call occasionally
Perform activities such as 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
#LI-Onsite

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.

Intern – Marketing

External & Internal Communications, Summer 2025

Commonwealth Fusion Systems

Program Details:

What you’ll do:

What we’re looking for:

Essential Requirements:

6 month growth

1 year growth

2 year growth

Simplify's Take

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What critics are saying

What makes Commonwealth Fusion Systems unique

Benefits