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Commonwealth Fusion Systems

R&D Engineer - High Voltage

Devens, MA$70k–$120kfull-timemidAdded today

About this role

Commonwealth Fusion Systems seeks an R&D Engineer to design, develop, and test high voltage systems for superconducting magnets used in fusion reactors. You'll lead research on high voltage transients and vacuum effects, execute test campaigns, and collaborate across teams to support the SPARC and ARC magnet programs.

What you'll do

  • Design and develop high voltage protection schemes for superconducting magnets with focus on Paschen effect in vacuum
  • Execute and manage test campaigns to validate high voltage systems and transient behavior
  • Lead root cause and corrective action (RCCA) analysis and testing to resolve magnet-related issues
  • Design, build, and commission test equipment and software for qualification and production testing
  • Collaborate cross-functionally with manufacturing, procurement, and SPARC integration teams to meet aggressive schedules
  • Challenge and refine test requirements, risks, and objectives to ensure data relevance and test necessity

What they're looking for

  • High voltage systems design and testing
  • Vacuum engineering and Paschen effect knowledge
  • Superconducting magnet fundamentals
  • Mechanical, electrical, materials, or fluids engineering
  • Test equipment design and commissioning
  • Software development for testing applications
  • Root cause analysis and problem-solving
  • Cross-functional collaboration and stakeholder management
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Commonwealth Fusion Systems

Commonwealth Fusion Systems develops next-generation fusion power technology, including high-temperature superconducting magnets and the SPARC fusion power demonstrator. The company is hiring R&D engineers, test engineers, mechanical engineers, and metrology specialists to advance fusion energy development through rigorous testing, innovative fluid systems design, manufacturing optimization, and precision measurement of complex reactor components.

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Likely interview questions

  • Describe your experience designing or testing high voltage systems in vacuum environments. How familiar are you with the Paschen effect?
  • Tell us about a time you led a test campaign from conception through execution. What challenges did you face and how did you overcome them?
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