Diagnostician
Commonwealth Fusion SystemsDevens, Massachusetts
Full Time
Posted March 5, 2026
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Job Description
The Diagnostician will support the design, fabrication, assembly, and operation of diagnostic systems for the SPARC tokamak, working with a multidisciplinary team to deliver precise measurements essential for plasma control and fusion energy demonstration.
Key Responsibilities
- Complete back-end design of diagnostic systems for SPARC tokamak.
- Support fabrication, assembly, and commissioning of diagnostic subsystems.
- Operate and utilize diagnostic systems to control plasma and collect scientific data.
- Collaborate with team members, partners, and international collaborators to deliver measurements.
- Ensure diagnostics support the measurement requirements within a fast project timeline.
Requirements
- Candidates must have experience working as part of an integrated diagnostic team supporting the design, fabrication, assembly, commissioning, and utilization of diagnostic systems for fusion devices.
- Candidates must have experience with multiple diagnostic systems, including but not limited to magnetics, interferometry, neutral pressure, x-ray to visible spectroscopy, camera imaging, bolometry, neutrons, Thomson scattering, electron cyclotron emission, reflectometry, Langmuir probes, and structural temperature and strain sensing.
- Candidates must have the ability to work on a fast timeline to deliver measurements for the SPARC tokamak project.
- Candidates must have a minimum of some experience in fusion science or related fields, with applications encouraged from both senior and early career fusion scientists.
- Candidates interested in cross-industry career changes are encouraged to apply, indicating a willingness to adapt and learn new skills relevant to fusion diagnostics.
- Candidates must be willing to work onsite at Commonwealth Fusion Systems facilities, as the role is designated LI-Onsite.
- Candidates must comply with U.S. laws concerning the export of controlled or protected technologies or information, including Export Control Laws, as a condition of employment.
Benefits & Perks
Competitive salary and compensation package (implied by professional role and industry standards)
Work in a fast-paced, innovative environment
Collaborative work with international partners and leading institutions
Opportunity to contribute to cutting-edge fusion energy research
Support for diverse career backgrounds and early to senior career levels
Engagement in impactful, mission-driven projects
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