Senior Diagnostics Mechanical Engineer

Commonwealth Fusion Systems•Devens, MA

1d•Onsite

About The Position

Commonwealth Fusion Systems (CFS) is developing commercially viable fusion power plants and assembling SPARC, a high-field tokamak intended to demonstrate net fusion energy. The Senior Diagnostics Mechanical Engineer will help complete the mechanical design and integration of SPARC diagnostic systems as they move through design closeout, analysis, procurement, testing, and installation. The systems include a broad range of in-vessel and ex-vessel diagnostics used to control the plasma and provide scientific data for the design of ARC. The engineer will work within an integrated diagnostics team alongside fusion scientists, designers, analysts, manufacturing engineers, and other engineers. The role supports diagnostic design completion, addresses engineering challenges associated with building and testing the systems, and contributes to structural components for transmitting data from the vessel to diagnostic laboratories. CFS welcomes applications from senior and early-career engineers and people pursuing cross-industry career changes.

Requirements

Bachelor’s degree in a relevant engineering field, such as mechanical, aerospace, civil, or nuclear engineering.
At least 7 years of relevant experience designing and delivering mechanical systems.
Demonstrated experience delivering cradle-to-grave mechanical designs with nuanced environmental or performance requirements.
Experience designing for manufacturing and assembly, and collaborating with partners to oversee or carry out integrated builds.
Bias toward action and the ability to balance engineering intuition with technical rigor to produce robust, simple designs quickly.
A first-principles approach to engineering and the ability to understand concepts and tradeoffs bridging engineering and physics.
Strong communication skills for gathering and distributing information across partner teams.
Ability to occasionally lift up to 50 pounds.
Ability to perform activities such as climbing, typing, standing, or sitting for extended periods.
Willingness to travel or occasionally work required nights, weekends, or on-call.
Ability to work in a facility with industrial hazards, including heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics.

Nice To Haves

Experience with Siemens NX, Teamcenter, or Ansys for CAD, PLM, or analysis.
Experience with software development, particularly in Python.
Experience designing large equipment that requires lifting or rigging tools for assembly.
Experience designing systems for high-stress, ultra-high-vacuum, high-temperature, high-magnetic-field, or radiation environments.

Responsibilities

Shepherd SPARC diagnostic subsystems through design closeout, testing, and procurement in collaboration with scientists, designers, analysts, and engineers.
Integrate technical input from team experts to ensure diagnostic designs can withstand SPARC’s operating environments and support its scientific goals.
Coordinate with manufacturing engineers on build and test strategies for complex integrated systems.
Support field builds to maintain quality and speed.
Contribute to a strong safety culture.