
Compensation
$110,000–$185,000/year
Job Description
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 a Senior Process Engineer
The SPARC Cryoplant (CRYP) team is responsible to deliver a large-scale helium cryogenics plant system on-time, on-budget, and meeting technical and performance requirements. The team is currently executing a fast-tracked install and commissioning to validate SPARC requirements prior to hand-off to Operations. Major equipment includes: 4 MW of compressor power, 500 m3 of helium gas storage, purification and oil removal systems, a 18-m cryogenic refrigeration coldbox with control valves, heat exchangers, pressure vessels, and turbomachinery, and a distributed control system. The team is looking for an experienced process engineer to support plant operations through commissioning, develop process safety and controls, and finalize process design documentation. Following commissioning and hand-off to Operations, the CRYP Process Engineer will transition to support development of future process system projects, including the ARC plant. Among other things, the Cryogenics team values: responsibility, proactiveness, prioritization, planning, critical thinking, a sense of urgency, growth mindset, accountability, communication, and collaboration.
What you'll do:
What we're looking for:
- Bachelor of Science in Mechanical, Chemical, or Process Engineering
- Fluid system process engineering design
- Hands-on commissioning / operation of mechanical / fluid systems
- Thermal fluid system process, equipment, and component design
- Compressible fluid hydraulic, heat and mass transfer, and pressure safety analysis
- Specification and selection of mechanical and controls hardware
- Procurement and vendor management
- Safety hazards and PPE requirements for plant operations
- Familiarity around pressurized systems, cryogenic fluids, and rotating machinery
- Familiarity with electrical and controls diagnostic tools, including multimeter and HART communicator
- Familiarity with precision tooling, alignments, torque specifications, welding specifications
- Familiarity with ASME, ANSI, CGA, NFPA, IEEE, OSHA codes and standards
Bonus points for:
Must-have requirements:
#LI-Onsite
At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
Optimize Your Resume for This Job
Get a match score and see exactly which keywords you're missing
Job Details
- Category
- Mechanical
- Employment Type
- Full Time
- Location
- Devens, MA
- Posted
- Compensation
- $110,000 - $185,000 per year
About Commonwealth Fusion Systems
Commonwealth Fusion Systems (CFS) is building SPARC, the world's first net-energy fusion machine. Spun out of MIT, they are commercializing compact fusion power plants using high-temperature superconducting magnets to deliver clean, limitless energy.
More Roles at Commonwealth Fusion Systems

Commonwealth Fusion Systems
Software
Senior Embedded Software Engineer
Devens, MA$140K - $200K Full Time
2 hours ago
Software
2 hours ago
Commonwealth Fusion Systems
Electrical
Senior Electrical Engineer
Devens, MA$110K - $185K Full Time
2 hours ago
Electrical
2 hours ago
Commonwealth Fusion Systems
Electrical
Principal RF Systems Engineer
Devens, MA$150K - $225K Full Time
4 hours ago
Electrical
4 hours ago
Commonwealth Fusion Systems
Software
Senior Data and Operations Software Engineer
Devens, MA$140K - $200K Full Time
22 hours ago
Software
22 hours ago
Commonwealth Fusion Systems
Software
Senior Algorithms and Simulation Software Engineer
Devens, MA$110K - $160K Full Time
23 hours ago
Software
23 hours agoSimilar Mechanical Roles

SpaceX
StarlinkMechanical
Mechanical Engineer, Aviation Hardware (Starlink)
Woodinville, WA$100K - $135K Full Time
Just now
StarlinkMechanical
Just now
Apptronik
Mechanical
Senior Manager of Mechanical Engineering
Austin, TX Full Time
1 hour ago
Mechanical
1 hour ago
Blue Origin
Mechanical
Facilities Engineering Design Mechanical Engineer I
Merritt Island, FL +2$81K - $114K Internship
18 hours ago
Mechanical
18 hours agoFound this role interesting?