Commonwealth Fusion Systems
Intern - Nuclear Engineer - Summer 2027
Devens, MA · On-site · Internship · Posted Oct 15, 2026
- Education
- Currently enrolled college students from bachelor’s degree to PhD; pursuing an engineering degree focused on Nuclear Engineering.
- Visa sponsorship
- Interns must be authorized to work in the United States for any employer.
About the job
Supports nuclear engineering projects through neutronics analyses and computational methods development for fusion plant design and operation.
What you'll do
- Perform neutronics calculations, including heating, activation, flux, and dose analyses, to support SPARC and ARC.
- Conduct analyses such as energy deposition and shielding sensitivity studies.
- Contribute to computational methods and workflows for neutronics analyses.
What they ask for
- Pursuing an engineering degree focused on Nuclear Engineering.
- Complete a Neutron Transport, Neutronics, or Reactor Theory course before the internship starts.
- Experience with MCNP or OpenMC.
- Must be authorized to work in the United States for any employer.
Nice to have
- Experience with CAD, Python, or C++.
- Knowledge of Monte Carlo or Deterministic neutronics methods.
Pay
USD 25–38 per-hour-wage (base salary)
Tools
MCNP, OpenMC, CAD, Python, C++
Model-written summary · the original posting is authoritative