Commonwealth Fusion Systems
Intern - Nuclear/Systems Engineer - Summer 2027
Devens, MA · On-site · Internship · Posted Oct 9, 2026
- Education
- Currently enrolled college student; pursuing an engineering degree focused on Nuclear Engineering or Mechanical Engineering.
- Visa sponsorship
- Interns must be authorized to work in the United States for any employer.
About the job
Supports nuclear and systems engineering teams with neutronics analyses and their application to fusion system design.
What you'll do
- Participate in hazard identification reviews and evaluate accident scenarios.
- Develop and verify radiation-related system requirements.
- Develop, track, and support margin budgets.
What they ask for
- Pursuing an engineering degree focused on Nuclear Engineering or Mechanical Engineering.
- Complete a Neutron Transport, Neutronics, or Reactor Theory course before the internship starts.
- Experience in MCNP or OpenMC.
- Mechanical design experience through courses, internships, or class projects.
Nice to have
- Experience in CAD and/or Python/ C++.
- Hands-on experience or internships in a commercial/research fission plant environment or the naval nuclear power program.
Pay
USD 25–38 per-hour-wage; base salary
Tools
MCNP, OpenMC, CAD, Python, C++
Model-written summary · the original posting is authoritative