Senior HTS Magnet R&D Engineer

Commonwealth Fusion Systems LLC; Harvard (MA); Hybrid; USD 134,000 - 205,000; Full time

Benefits offered by this job

Equity

Health insurance

401(k) with employer matching

Professional growth opportunities

Generous parental leave

Job summary

Commonwealth Fusion Systems LLC is seeking a Senior R&D Engineer for the NINT Magnet R&D team. You will lead tests, develop HTS magnet designs, and drive cross‑functional projects across mechanical, electrical, and materials domains to support SPARC magnet development and commissioning.

The role requires a strong background in electromechanical systems, test procedures, and data analysis, with the ability to challenge requirements and manage risk.

Qualifications

• 7+ years of experience as an R&D or test engineer
• Experience leading multi-disciplinary engineering projects
• Ability to design, build, and test complex electromechanical systems
• Strong grounding in mechanical, electrical, and thermal principles

Responsibilities

• Develop HTS magnet designs and subsystems; build R&D test samples and manufacturing processes
• Design, build, and commission test equipment for R&D campaigns
• Perform structural, electrical, and thermal analyses to predict test results
• Collaborate with I&C engineers on instrumentation and data acquisition
• Maintain documentation, schedules, and budgets for test campaigns
• Prepare and deliver trade studies and test data reviews to engineers and physicists

Skills

R&D engineering

Test engineering

Multidisciplinary

CAD NX

Education

Bachelor’s degree in engineering or science field

Tools

Siemens NX

Job description

Commonwealth Fusion Systems LLC is seeking a Senior R&D Engineer for the NINT Magnet R&D team. You will lead tests, develop HTS magnet designs, and drive cross‑functional projects across mechanical, electrical, and materials domains to support SPARC magnet development and commissioning.

The role requires a strong background in electromechanical systems, test procedures, and data analysis, with the ability to challenge requirements and manage risk.