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Intern - R&D Multiphysics Simulation Intern - Spring or Summer 2027

$25 – $38/hr Somerville, MA Internship Posted Nov 3, 2026

About the job

About Commonwealth Fusion Systems: 
 
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 we're working with policymakers, suppliers, and many others to build the energy industry of the future.
 
We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading 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 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.

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