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Salary
$50k – $76k per year
Location
In office (Devens)
Seniority
Intern
Employment
Internship

Confirmed on the employer's own hiring board on Nov 4, 2026. First seen by Alion on Oct 22, 2026. Commonwealth Fusion Systems scores A on the Alion truth index.

Overview
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Profile match
Commonwealth Fusion Systems is a commercial fusion energy company headquartered in Devens, Massachusetts, and founded in 2018. The firm specializes in the development of high-temperature superconducting magnets and compact tokamak devices, specifically the SPARC net-energy machine and the ARC commercial power plant. It operates through a strategic partnership with the Massachusetts Institute of Technology and focuses on scaling fusion technology to provide carbon-free, baseload power to global energy markets.

Join the power movement as a Materials Test Engineering Intern

The CFS Materials Team is seeking a motivated Materials Test Engineering Intern to join our cutting-edge team. In this role, you will support the development and testing of advanced materials critical to key tokamak systems such as plasma-facing components, the vacuum vessel, and high field magnets. This is a unique opportunity to work at the forefront of sustainable energy innovation in a collaborative, fast-paced R&D environment.

Program Details:

  • 13-18 week internship
  • 40-50 hours per week with set hourly salary based on year in school
  • Opportunities on site in Devens, 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 team’s existing need.
  • Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD
  • Interns must be authorized to work in the United States for any employer

What you'll do:

  • 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: commissioning a new vacuum furnace, designing and testing a new polishing and etching recipe for novel materials, troubleshooting complex test equipment to enable renewed testing campaigns, creating and implementing methods to extract grain size or inclusion or other data from SEM or optical images, and working with FTIR

What we’re looking for:

    • Pursuing an engineering degree with focus in the field of Materials Engineering or Mechanical Engineering
    • Experience with FTIR, Optical and SEM imaging and polishing and sample preparation
    • 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 is preferred
    • Demonstration of exceptional results through a range of different pursuits
    • High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills

Must-have Requirements:

  • 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
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