Commonwealth Fusion Systems
R&D Test Engineer - Fluid Systems
About this role
Commonwealth Fusion Systems seeks an R&D Test Engineer to design and build innovative fluid systems for research test stands, primarily supporting magnet testing. You'll work across diverse fluid types (cryogenic, molten salt, supercritical, etc.) on projects ranging from small-scale analysis to large complex systems, while collaborating cross-functionally to advance fusion energy technology.
What you'll do
- Design and develop fluid systems for R&D test stands with focus on magnet testing applications
- Commission and operate test systems, troubleshooting and optimizing performance
- Collaborate with test engineers, software engineers, and operators on system automation and controls
- Source and integrate both commercial off-the-shelf and custom hardware solutions
- Support SPARC and ARC projects from concept through implementation on tight timelines
- Work cross-functionally with production, procurement, and other engineering disciplines to mitigate technical risks
What they're looking for
- Mechanical engineering fundamentals
- Chemical engineering principles
- Fluid systems design and analysis
- Cryogenic system experience
- Test engineering and commissioning
- Cross-disciplinary problem solving
- Project management on tight deadlines
- Collaboration and communication
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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.
View all jobs at Commonwealth Fusion SystemsLikely interview questions
- Describe your experience designing and testing fluid systems across different states of matter (liquid, gas, cryogenic, supercritical). Which have you worked with most, and what were the key challenges?
- Tell us about a time you had to deliver a complex system on a tight timeline. How did you prioritize between custom solutions and off-the-shelf components?