Senior Process Engineer

Commonwealth Fusion Systems LLC; Massachusetts; On-site; USD 110,000 - 185,000; Full time

Benefits offered by this job

Competitive compensation with equity

Flexible vacation days

Health, dental, and vision insurance

401(k) with employer matching

Generous parental leave policy

Professional growth opportunities

Job summary

Commonwealth Fusion Systems LLC is seeking a Senior Process Engineer for the SPARC Cryoplant, responsible for developing and commissioning a helium cryogenics plant. The ideal candidate will have a Bachelor’s in Engineering and experience in thermal fluid systems, commissioning, and vendor management.

Responsibilities include designing process documentation, supporting operations, and ensuring safety protocols are met, all while being committed to teamwork and innovative engineering solutions.

The role offers a competitive salary range of $110,000 to $185,000, along with equity and comprehensive benefits.

Qualifications

• Experience in thermal fluid system process design and analysis.
• Hands-on commissioning / operation experience required.
• Familiarity with cryogenic systems and pressurized equipment.

Responsibilities

• Support plant operations through commissioning, including shift work.
• Create design drawings and process schematics.
• Troubleshoot machinery, instrumentation, and controls.
• Plan acceptance and performance tests and quality inspections.

Skills

Thermal fluid system process design

Fluid system process engineering

Commissioning / operation of mechanical systems

Procurement and vendor management

Familiarity with ASME and OSHA standards

Education

Bachelor of Science in Mechanical, Chemical, or Process Engineering

Tools

CAD software

HART communicator

Multimeter

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. We’re working with policymakers and suppliers to build the energy industry of the future. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world. 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.

Senior Process Engineer – SPARC Cryoplant (CRYP)

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, an 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

• Learn the CRYO system ins-and-outs and become a SME for commissioning and operations
• Perform thermal fluid system process design and analysis
• Support plant operations through commissioning, including occasional shift work
• Create 2D/3D design drawings and process schematics
• Create valve, instrument, machinery, and equipment lists
• Troubleshoot machinery, equipment, instrumentation, and controls
• Develop CONOPs and HMIs for software and controls implementation
• Prepare and execute operating, maintenance, and repair plans and procedures
• Write specifications, RFIs/RFQs/RFPs, and manage procurements and build-outs
• Develop interface and performance requirements and hardware specifications and selection
• Design and fabricate hardware and equipment skids
• Plan acceptance and performance tests and quality inspections
• Coordinate contractor daily activities in the field and factory

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

• Specify, design, install, commission large-scale fluid cryogenic systems
• Hands-on operation of compressible fluid systems with pressure vessels, process piping, pumps, valves, compressors, heat exchangers
• Design, install, commission industrial-scale rotating machinery, e.g. compressors, pumps, and turbines
• Repair and maintenance of industrial-scale process piping, pressure vessels, valves, and filtration systems
• Create and release CAD drawings for fabrication
• Project management, including in a matrixed organization

Must-have requirements

• Ability to lift up to 50 lbs occasionally
• Perform activities such as stooping, climbing, typing, standing and sitting for extended periods of time
• Willingness to occasionally travel or work required nights/weekends/on-call; potential occasional travel to suppliers or contractors
• Dedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics

Salary: $110,000 - $185,000 a year

Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include:

• Competitive compensation with equity
• 13 Company-wide Holidays
• Flexible vacation days
• 10 sick days
• Generous parental leave policy
• Health, dental, and vision insurance
• 401(k) with employer matching
• Professional growth opportunities
• Team-building activities

Headcount status
LI-Onsite

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. 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.