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Intern R&D Test Engineer Spring or Summer 2027


Job Location:

Somerville, NJ - USA

Hourly Salary: USD 25 - 32
Posted: 1 November 2026 (Yesterday)
Application Deadline: 29 January 2027
Vacancies: 1 Vacancy

Job Summary

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 were designing and building commercially viable fusion power plants. And were working with policymakers suppliers and many others to build the energy industry of the future.
Were in the best position to make it happen. Since 2018 weve raised $4 billion of capital making us the largest and leading fusion company in the world.
Now were looking for more thinkers doers builders and makers to join us. People wholl bring new perspectives solve tough problems and thrive as part of a team.
If thats you and this role fits we want to hear from you.

Join the power movement as an R&D Test Engineering Intern
We are looking for talented R&D Test Engineering Interns to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.
Program Details:
  • 13-26 week internship
  • 40-50 hours per week with set hourly salary based on year in school
  • Opportunities on site in Devens MA and Somerville 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 teams existing need.
  • Opportunities available for currently enrolled college students in all levels of schooling from bachelors degree to PhD
  • Interns must be authorized to work in the United States for any employer
What youll do:
We currently have multiple openings for the R&D Test Engineering Internship. Please note that the following list encompasses all available roles so individual responsibilities will vary depending on the specific position:
  • Design and build R&D samples and develop associated manufacturing processes and execute test operations in support of risk-mitigation development campaigns for novel HTS magnet technology
  • Design build and commission test equipment and collaborate with instrumentation and controls engineers to develop associated sensors and data acquisition as needed
  • Perform structural electrical and/or thermal analyses in support of R&D sample design and to predict test results
  • Create and manage design process and test documentation along with schedules budgets BOMs instrumentation indexes etc. and deliver technical update presentations to manager and cross-functional technical teams as needed
  • Support SPARC magnet acceptance testing through the design build and commissioning of upgrades and subsystems within the Magnet Factory
What were looking for:
  • Pursuing a degree with focus in the field of Mechanical Engineering Electrical Engineering Aerospace Engineering or Physics
  • Prior experience with a hands-on hardware internship Formula SAE Rocket Club Machine Shop or equivalent
  • Proficiency with basic hardware tools and test equipment (torque wrenches multimeters calipers saws drills taps power supplies etc...)
  • Demonstration of exceptional results through a range of different pursuits
  • High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills
  • Communication - not afraid to ask for help shows evidence that theyd integrate nicely into a team of technical engineers / scientists but also able to communicate with people with less of a technical background like technicians supply chain etc
Must-have Requirements:
  • 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
$25 - $38 an hour
Rates are aligned to your current year in school ensuring equitable and consistent pay across our intern program.
For BS interns the hourly rate is $25$32
For MS/PhD interns the rate is $35$38
Benefits included for full-time interns:
40 hours of sick time
Health dental and vision insurance
401(k) with employer matching (must be 21 years of age to enroll)
Professional growth opportunities
Team-building activities
#LI-Onsite

At CFS we excel in fast-paced environments driven by our values of integrity execution impact and self-critique. As we grow were 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.

Required Experience:

Intern


About Company

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The fastest path to clean, limitless fusion energy.

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