Commonwealth Fusion Systems · 7 hours ago
Intern - Mechanical Engineer - Fall Co-op 2026
Devens, MA
Internship
Onsite
Intern
$23/hr - $35/hr
Start in 2026 FallCommonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy, leveraging decades of research and new technologies to design commercially viable fusion power plants. They are seeking a Mechanical Engineering Intern who will engage in meaningful project assignments, including designing custom tooling and developing manufacturing techniques for superconducting magnet components.
Clean EnergyElectrical DistributionEnergyEnvironmental EngineeringRenewable Energy
No H1B
Responsibilities
Design custom tooling, fixturing, and multi-part assemblies
Work with design and equipment engineers to develop custom automation equipment
Hold design reviews with fellow engineers to ensure proper design fundamentals
CAD design work, creative problem solving, report writing, data collection, and hands on assembly of test pieces
Develop and qualify manufacturing techniques, processes, flow maps, and work instructions for superconducting magnet components and assemblies
Develop assembly methods and tools to perform specific tasks within the larger goal of SPARC assembly
Spend time on the floor and work with technicians to make manufacturing processes better
Qualification
Required
Pursuing an engineering degree with focus in the fields of Mechanical, Electrical or Aerospace
CAD design experience
High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills
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
Interns must be authorized to work in the United States for any employer
Preferred
FEA is a plus
Familiarity with hand tools (machine shop experience is a plus)
Experience in a manufacturing environment
Hands-on experience through academic research, project teams, machine shops, hackathons, or industry internships
Demonstration of exceptional results through a range of different pursuits
Benefits
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
Company
Commonwealth Fusion Systems
Commonwealth Fusion Systems designs and develops commercial fusion energy systems to produce clean energy.
Founded in 2017
501-1000 employees
Funding
Current Stage
Late StageTotal Funding
$2.88BKey Investors
GoogleUS Department of EnergyTiger Global Management
2025-08-27Series B· $863M
2025-06-30Corporate Round
2024-06-06Grant· $15M
Leadership Team
Robert Mumgaard
Chief Executive Officer and Co-Founder
Martin Greenwald
Cofounder
Recent News
2026-02-03
Crowdfund Insider
2026-01-22
Company data provided by crunchbase