Nuclear & Systems Engineering Intern — Summer 2027

Commonwealth Fusion Systems LLC; Harvard (MA); On-site; USD 34,000 - 52,000; Part time

Job summary

Commonwealth Fusion Systems LLC in Devens, MA is seeking a Nuclear/Systems Engineering Intern for Summer 2027. The 13-18 week program runs 40-50 hours per week at a set hourly salary, with on-site opportunities and team-based projects that link nuclear and systems engineering.

You will work on neutronics analyses, hazard reviews, and radiation system requirements, collaborating with teams to advance fusion power plant design.

Qualifications

• Pursuing an engineering degree with focus in Nuclear or Mechanical Engineering.
• Available to start during summer 2027 and on-site at Devens, MA.
• Experience with MCNP or OpenMC.
• Strong communication and teamwork skills.
• Prior hands-on projects or internships in nuclear contexts preferred.

Responsibilities

• Support the interface of Nuclear and Systems Engineering teams on neutronics analyses.
• Assist in development and verification of radiation-related system requirements.
• Contribute to hazard reviews and accident scenario evaluations.

Skills

Strong communication skills

Teamwork

Self-motivated

Troubleshooting

Education

Engineering degree (Nuclear or Mechanical)

Tools

MCNP

OpenMC

Job description

Commonwealth Fusion Systems LLC in Devens, MA is seeking a Nuclear/Systems Engineering Intern for Summer 2027. The 13-18 week program runs 40-50 hours per week at a set hourly salary, with on-site opportunities and team-based projects that link nuclear and systems engineering.

You will work on neutronics analyses, hazard reviews, and radiation system requirements, collaborating with teams to advance fusion power plant design.