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

Commonwealth Fusion Systems • Somerville, MA

6d • $25 - $38 • Onsite

About The Position

Commonwealth Fusion Systems is seeking an R&D Multiphysics Simulation Intern to join its R&D team in Somerville, Massachusetts. The intern will advance coupled electromagnetic and thermal circuit model workflows and models of high-temperature superconducting (HTS) magnet components for SPARC and ARC, collaborating across departments to analyze experimental data and validate models.

This internship lasts 13–26 weeks and is scheduled for 40–50 hours per week. The hourly rate is based on the intern’s year in school. On-site opportunities are available in Somerville; interns working on site are responsible for their own transportation and housing. Project assignments and required technical skills vary based on team needs. Opportunities are available to currently enrolled college students from bachelor’s through PhD programs. Interns must be authorized to work in the United States for any employer.

The role involves potential exposure to industrial hazards, including heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics. Employment offers are contingent on compliance with U.S. Export Control Laws.

Requirements

• Currently pursuing a degree focused on Physics, Engineering (such as Electrical, Mechanical, or Nuclear Engineering), or a related field.
• Coding experience through coursework, research, or personal projects, such as Python, MATLAB, or C++.
• Foundational coursework in electromagnetism and thermodynamics or heat transfer.
• Working understanding of electromagnetics and heat-transfer fundamentals.
• Clear written and verbal communication skills and the ability to work independently and as part of a team.
• Must be authorized to work in the United States for any employer.
• Able to perform activities such as typing, standing, or sitting for extended periods.
• Dedication to safety in environments with potential industrial hazards, including heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics.

Nice To Haves

• Proficiency in at least one programming language, preferably Python.

Responsibilities

• Analyze cable magnet design concepts for ARC using reduced models that capture global and local effects.
• Test new simulation-workflow modules against independent models and experimental data.
• Understand experimental setups and data to validate models and understand measured physical mechanisms.
• 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.

Benefits

• 40 hours of sick time for full-time interns.
• Health insurance for full-time interns.
• Dental insurance for full-time interns.
• Vision insurance for full-time interns.
• 401(k) with employer matching for full-time interns; enrollment requires being at least 21 years old.
• Professional growth opportunities for full-time interns.
• Team-building activities for full-time interns.

What This Job Offers

• Career Level: Intern
• Education Level: No Education Listed