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Mechanical Engineer – Cable Magnets

Commonwealth Fusion Systems
Devens, Massachusetts
Full Time
Posted November 25, 2025
Nuclear Energy
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Job Description

A Mechanical Engineer specializing in cable magnets, responsible for designing, analyzing, sourcing, testing, and supporting the fabrication of complex magnet components used in fusion energy systems, working closely with cross-functional teams throughout the product lifecycle.

Key Responsibilities

  • Design components supporting the primary magnet systems used to shape and drive plasma in fusion devices.
  • Develop and analyze mechanical designs using CAD, including performing analysis and simulations.
  • Support fabrication methods such as composite layups, welding, forming, and machining for magnet components.
  • Manage all stages of the product lifecycle, from initial design to testing, production, and peer review.
  • Collaborate with cross-functional teams to ensure designs meet project requirements and broader organizational needs.
  • Present design concepts and technical information to peers and leadership to demonstrate objectives and resolve concerns.

Requirements

  • A Bachelor's degree in Mechanical Engineering or a related technical field.
  • Experience in designing mechanical components for systems operating in extreme environments such as high vacuum and near absolute zero temperatures.
  • Proficiency in all stages of the product lifecycle including blank-page design, CAD modeling, analysis, sourcing, vendor support, testing support, production support, and peer review.
  • Ability to design components that support one of the three primary magnet systems used to shape and drive plasma in fusion devices.
  • Experience with fabrication methods including composite layups, welding, forming, and machining.
  • Experience working closely with teammates and peers on adjacent teams to ensure design requirements are met and aligned with broader project needs.
  • Ability to present designs to peers and leadership, including executive leadership, to demonstrate that design objectives have been met and to resolve technical concerns.
  • Compliance with U.S. export control laws concerning the export of controlled or protected technologies or information.

Benefits & Perks

Competitive salary and compensation package (implied by professional role and industry standards)
Work in a fast-paced environment with a mission-driven culture
Opportunities to work closely with leadership and present designs to executive teams
Collaborative team environment with peers and adjacent teams
Diverse and inclusive workplace committed to equality
Potential for career growth and impact in the fusion energy industry

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