About Commonwealth Fusion Systems:
Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.
Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.
We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.
Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.
If that’s you and this role fits, we want to hear from you.
Join the power movement as an R&D Production Test Engineer
We’re seeking an experienced Test Engineer to support the testing and de-risking of our cutting-edge HTS magnet technology, playing a key role in advancing fusion energy. Embedded within our R&D organization, you’ll take on a broad range of responsibilities, from developing methodologies and procedures with magnet physicists to conducting root cause analysis alongside manufacturing experts working with complex new materials. This dynamic role demands flexibility, cross-disciplinary collaboration, and the ability to execute tests on tight timelines. You’ll lead the integration and operation of complex test stands, define safety standards, develop and refine procedures, and drive continuous improvement to help achieve our extraordinary milestones in making fusion a reality.
What you'll do:
- Lead magnet and other test campaigns in cryogenic, vacuum, and high-current environments
- Develop detailed test procedures and ensure data integrity with robust instrumentation and controls
- Support improvements to test stands, optimizing for test rate and ensuring data quality
- Design, analyze, and build test equipment, including mechanical, electrical, and fluid systems
- Maintain and document test requirements, risks, and safety protocols
- Manage test schedules, budgets, and technical documentation (P&IDs, CAD designs, schematics, etc.)
- Improve test processes for repeatability and efficiency
- Analyze test data, create custom tools for data analysis, and present findings to cross-functional teams
- Lead anomaly investigations and resolution, collaborating with physicists and engineers
What we’re looking for:
- Bachelor’s (or higher) in engineering or applied physics, with 2+ years of hands-on testing experience
- Expertise in test stand operation, data collection, and cross-functional collaboration
- Strong background in test planning, data analysis, and test equipment design
- Experience with electromagnetic fundamentals and troubleshooting complex systems
- A passion for process improvement and innovative problem-solving
- Excellent communication skills, with the ability to present technical topics clearly
- Self-motivated, results-driven, and eager to learn
Bonus points for:
Experience with structural FEA software, particularly ANSYS and COMSOL
Proficiency in using NX and Teamcenter for designing complex test equipment and assemblies
Experience with Ignition for developing Human Machine Interfaces
Proficiency in using Jira or similar ticket and task tracking software for managing projects and status
Experience with large-scale data collection, manipulation, and analysis to derive actionable insights
Hands-on experience operating complex test stands for long-duration test campaigns
Must-have requirements:
Ability to occasionally lift up to 50 lbs
Perform activities such as typing, climbing, standing, stooping or sitting for extended periods of time
Willingness to occasionally travel or work required nights/weekends/on-call
Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
