Intern - Cryogenics Engineer - Fall Co-op 2026

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 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.

The Cryogenics team is an enthusiastic group of full-time engineers with backgrounds that span from Aerospace to National Labs to Start Ups. Our goal is to develop cryogenic helium systems that are critical to keeping the HTS magnets within superconducting temperatures. We work in a fast-paced and strategically collaborative setting that allows us to take designs from concept to hardware within extremely short time spans. We are looking for an energetic co-op student to join our team. Within this co-op, you will be working on engineering design and analysis.

#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.