Intern - Mechanical/Manufacturing Engineer - Fall 2025 & Spring, Summer 2026

Commonwealth Fusion Systems • Devens, MA

124d

About The Position

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 Mechanical/Manufacturing Engineer Intern. We are looking for talented technical interns to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.

Requirements

• Pursuing an engineering degree with focus in the fields of Mechanical, Electrical or Aerospace.
• Hands-on experience through academic research, project teams, machine shops, hackathons, or industry internships.
• Demonstration of exceptional results through a range of different pursuits.
• High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills.

Nice To Haves

• Willingness to travel or work required nights/weekends/on-call occasionally.
• Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics.

Responsibilities

• Develop and qualify manufacturing techniques, processes, flow maps, and work instructions for superconducting magnet components and assemblies.
• Support Quality Activities in Manufacturing.
• Develop high-field magnet insulation components and joints.
• Design tooling improvements and document CAD Design work.
• Engage in creative problem solving, report writing, data collection, and hands-on assembly of test pieces.
• Develop assembly methods and tools to perform specific tasks within the larger goal of SPARC assembly.
• Work with design and equipment engineers to develop custom automation equipment.
• Conduct multiscale structural computational modeling of high-field superconducting magnets.
• Support HTS R&D team projects.
• Engage in Systems Engineering for Superconducting Magnets.

Benefits

• 12-16 week internship program.
• 40-50 hours per week with set hourly salary based on year in school.
• Opportunities vary between onsite in Somerville, MA and Devens, MA.

What This Job Offers

• Career Level: Intern
• Industry: Utilities
• Education Level: Bachelor's degree