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

Confirmed on the employer's own hiring board on Nov 6, 2026. First seen by Alion on Nov 3, 2026. Commonwealth Fusion Systems scores A on the Alion truth index.

Overview
Company
Impact
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 R&D Multiphysics Simulation Intern

Commonwealth Fusion Systems is seeking an R&D Multiphysics Simulation Intern to join the R&D team in Somerville, MA. The R&D Multiphysics Simulation Intern will work on advancing coupled electromagnetic and thermal circuit model workflows and models of high-temperature superconducting (HTS) magnet components for SPARC and ARC. The role includes collaborating across different departments to analyze experimental data and to validate our models.

Program Details:

  • 13-26 week internship
  • 40-50 hours per week with set hourly salary based on year in school
  • Opportunities on site in 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 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:

    • Analyze cable magnet design concepts for ARC via reduced models capturing global and local effects
    • Test new modules for simulation workflows against independent models & experimental data
    • Understand experimental setups & data to validate & understand physical mechanisms measured
    • Write clean, documented, version-controlled code that contributes to shared simulation tools
    • Present methods and results to the R&D team and summarize the work in a final report

What we’re looking for:

  • Pursuing a degree with a focus in Physics or Engineering (e.g. Electrical, Mechanical, Nuclear) or a related field
  • Coding experience through coursework, research or personal projects (e.g. Python, MATLAB, C++)
  • Foundational coursework in electromagnetism and thermodynamics or heat transfer
  • Proficiency in at least one programming language, preferably Python
  • Working understanding of electromagnetics and heat transfer fundamentals
  • Clear written and verbal communication; able to work independently and in a team

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
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