Commonwealth Fusion Systems · 13 hours ago
Intern - Materials Test Engineer - Fall Co-op 2026
Devens, MA
Internship
Onsite
Intern
$32/hr - $35/hr
Start in 2026 FallCommonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy. They are seeking a motivated Materials Test Engineering Intern to support the development and testing of advanced materials critical to key tokamak systems in a collaborative, fast-paced R&D environment.
Clean EnergyElectrical DistributionEnergyEnvironmental EngineeringRenewable Energy
No H1B
Responsibilities
Support day-to-day operations and test development work in the Materials Test Lab, including sample preparation, test execution, data collection, and analysis
Work alongside engineers and technicians to enable material performance evaluation for critical fusion components
Contribute to custom test development projects
Example projects may include: Assisting with the design and build of high-temperature outgassing test stand, commissioning and calibration of new test equipment, improving lab workflows for repeatability and turnaround time, development of capabilities for mechanical testing of composite materials using existing Instron test frames
Qualification
Required
Interest or experience with materials science, metallurgy, mechanical engineering, mechanical testing, electrical engineering, physics, chemistry, nanoscience, microscopy, engineering lab work, or instrumentation
Hands-on or engineering project experience or hands-on experience with materials testing and characterization equipment and testing procedures
Demonstration of exceptional results through a range of different pursuits
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
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