Intern - NRad & Nuclear/Systems Engineer - Summer 2027

Commonwealth Fusion Systems•Devens, MA

9d•Onsite

About The Position

Commonwealth Fusion Systems (CFS) is seeking talented NRad and Nuclear/Systems Engineering Interns to join their team for a 13-18 week internship during Summer 2027. CFS interns are highly valued and placed into meaningful and challenging roles. The internship offers opportunities on-site in Devens, MA, with a set hourly salary based on the intern's year in school. Specific project assignments and required technical skillsets will vary based on the team's existing needs. Interns must be authorized to work in the United States for any employer. CFS is a leader in fusion energy, aiming to deliver the urgent transition to fusion energy by designing and building commercially viable fusion power plants. Since 2018, CFS has raised $4 billion in capital and is looking for individuals who bring new perspectives, solve tough problems, and thrive in a team environment.

Requirements

Pursuing an engineering degree with focus in the fields Nuclear Engineering or Mechanical Engineering
Neutron Transport or Neutronics or a Reactor Theory course completed by the start of internship
Experienced in MCNP or OpenMC
Experience in Mechanical Design through courses, previous internships, or class projects
Strong communication skills and a willingness to learn
Must work well in a team
Must be highly self-motivated and driven to execute quickly with excellent troubleshooting/problem-solving skills
Prior hands-on experience or internships working in a commercial/research fission plant environment or the naval nuclear power program
Must-have Requirements: Willingness to travel or work required nights/weekends/on-call occasionally
Perform activities such as typing, standing, or sitting for extended periods of time
Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
Must be authorized to work in the United States for any employer

Nice To Haves

Optional: experienced in CAD and/or Python/ C++

Responsibilities

Collaborate with engineers on the Nuclear Engineering team to do neutronics calculations (heating, activation, flux, dose, etc) to support the design and operation of SPARC, the scoping of ARC, and any other nuclear engineering needed.
Work on projects such as, but not be limited to: Neutronics analyses such as energy deposition in delicate materials or shielding sensitivity studies for diagnostic design.
Contribute to the computational development of method and workflows needed to support and optimize different types of neutronics analyses.
Support the interface of Nuclear Engineering and Systems Engineering working collaboratively with both teams on neutronics analyses and their application to the development of system design.
Work on projects such as, but not limited to: participating in Hazard Identification reviews and evaluation of accident scenarios, development and verification of radiation related system requirements, and margin budget development, tracking, and support.