About the role#
We are seeking a Composites and Insulation Materials Intern for Summer 2027. This position involves direct work on material characterization and testing for fusion energy technology. You will join our team for a 13-18 week period, working 40-50 hours per week.
What you'll do#
- Create composites for material characterization.
- Design and manufacture test articles for mechanical testing.
- Conduct high voltage insulation testing.
What you'll need#
- Pursuing a degree in materials, mechanical, or electrical engineering.
- Hands-on experience with fiber matrix composite material design or manufacturing.
- Knowledge of high voltage insulation.
- Experience with superconductors or related technologies like high vacuum, cryogenics, and high power systems.
- Involvement in build teams such as solar car, FSAE, or rocket teams.
- A commitment to safety regarding industrial hazards like high voltage, cryogenics, and strong magnets.
- Ability to work nights, weekends, or on-call shifts when required.
- Ability to perform tasks like typing, standing, or sitting for extended periods.
Location & details#
- This is a full-time, paid, on-site internship.
- Work locations include Somerville, Massachusetts, and Devens, Massachusetts.
- You are responsible for your own transportation and housing.
- You must be authorized to work in the United States.
About Commonwealth Fusion Systems
Commonwealth Fusion Systems develops fusion power plants to supply clean energy. Founded in 2018 and based in Devens, Massachusetts, the company employs between 501 and 1,000 people. It specializes in energy technology and has created high-temperature superconducting magnets to support commercial fusion. The organization operates as a private entity.
How to get in at Commonwealth Fusion Systems
Applying early to Commonwealth Fusion Systems gives you a distinct advantage because recruiters review applications before the candidate pool grows too large. Intern Insider sends an instant alert the moment a role matching your target is published anywhere, so you can be among the first to submit your materials. This ensures your profile is visible when the hiring team starts their initial search. You can also improve your response rates by reaching out to the people managing these roles directly. Intern Insider surfaces the recruiters behind the company's roles, allowing you to ask relevant questions or request a referral. Taking this step shows you are serious about the work and helps you stand out from the standard queue.



