Fusion R&D Test Engineer: High-Power Magnet Testing

Commonwealth-Fusion-Systems-5; Harvard (MA); On-site; USD 90,000 - 145,000; Full time

Benefits offered by this job

Equity

Health insurance

13 Company-wide holidays

Flexible vacation days

Sick days

Parental leave

401(k) with employer matching

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems seeks an experienced R&D Test Engineer to design, analyze, build, commission, and maintain electrical test equipment for HTS magnets. You will collaborate across manufacturing, R&D, procurement, and SPARC teams to meet aggressive test schedules and push requirements.

Strong electrical engineering fundamentals and hands-on test facility experience are essential. You will develop test plans, ensure data reliability, manage documentation, and lead anomaly investigations

Qualifications

• Bachelor’s degree in engineering, physics, or related field.
• 5+ years designing/commissioning specialized electrical apparatus.
• 2+ years using electrical analysis software (PLECS/LTSPICE/ETAP/Simulink).
• Understanding electromagnetic fundamentals and system behavior.
• Familiarity with NEC/NFPA 70 and OSHA safety standards.
• Experience with high-power electronics and energy storage devices.
• Strong troubleshooting and attention to detail.
• Ability to communicate technical topics to varied audiences.
• Willingness to travel and work nights/weekends occasionally.
• Experience designing new test facilities and procedures.

Responsibilities

• Design and build test equipment for energizing superconducting magnets.
• Contribute to electrical testing infrastructure in new facilities.
• Develop test plans with data objectives and instrumentation needs.
• Maintain well-documented requirements, risks, and safety plans.
• Identify hazards and produce job hazard assessments and test readiness reviews.
• Manage design reviews, wiring lists, schematics, CAD assemblies, and software.
• Troubleshoot integration and test discrepancies during build and operation.
• Iterate designs and test methods to improve efficiency and repeatability.
• Analyze test data and develop custom tools to interpret results.
• Lead anomaly investigations and present findings to physicists and engineers.
• Plan future expansion including equipment and floor layouts for scalability.

Skills

Electrical design

Circuit analysis

High-power electronics

EM theory

Electrical safety

EMI/EMC

Troubleshooting

Cross-functional collaboration

Test facilities design

Documentation

Education

Bachelor's degree in engineering or science

Electrical engineering or related discipline

Tools

PLECS

LTSPICE

ETAP

Simulink

NX

Teamcenter

Job description

Commonwealth Fusion Systems seeks an experienced R&D Test Engineer to design, analyze, build, commission, and maintain electrical test equipment for HTS magnets. You will collaborate across manufacturing, R&D, procurement, and SPARC teams to meet aggressive test schedules and push requirements.

Strong electrical engineering fundamentals and hands-on test facility experience are essential. You will develop test plans, ensure data reliability, manage documentation, and lead anomaly investigations