{"schemaVersion":"jobsearcher.job.v1","id":"983fa0a51dcca7bbbd677258","url":"https://jobsearcher.com/jobs/983fa0a51dcca7bbbd677258","canonicalUrl":"https://jobsearcher.com/jobs/983fa0a51dcca7bbbd677258","title":"Senior Process Engineer","description":"About Commonwealth Fusion Systems:\n\nCommonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.\n\nCombining 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.\n\nWe’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.\n\nNow 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.\n\nIf that’s you and this role fits, we want to hear from you.\n\nJoin the power movement as a Senior Process Engineer\n\nThe 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.\nWhat you'll do:\nLearn the CRYO system ins-and-outs and become a SME for commissioning and operations\nPerform thermal fluid system process design and analysis\nSupport plant operations through commissioning, including occasional shift work\nCreate 2D/3D design drawings and process schematics\nCreate valve, instrument, machinery, and equipment lists\nTroubleshoot machinery, equipment, instrumentation, and controls\nDevelop CONOPs and HMIs for software and controls implementation\nPrepare and execute operating, maintenance, and repair plans and procedures\nWrite specifications, RFIs/RFQs/RFPs, and manage procurements and build-outs\nDevelop interface and performance requirements and hardware specifications and selection\nDesign and fabricate hardware and equipment skids\nPlan acceptance and performance tests and quality inspections\nCoordinate contractor daily activities in the field and factory\nWhat we're looking for:\nBachelor of Science in Mechanical, Chemical, or Process Engineering\nFluid system process engineering design\nHands-on commissioning / operation of mechanical / fluid systems\nThermal fluid system process, equipment, and component design\nCompressible fluid hydraulic, heat and mass transfer, and pressure safety analysis\nSpecification and selection of mechanical and controls hardware\nProcurement and vendor management\nSafety hazards and PPE requirements for plant operations\nFamiliarity around pressurized systems, cryogenic fluids, and rotating machinery\nFamiliarity with electrical and controls diagnostic tools, including multimeter and HART communicator\nFamiliarity with precision tooling, alignments, torque specifications, welding specifications\nFamiliarity with ASME, ANSI, CGA, NFPA, IEEE, OSHA codes and standards\nBonus points for:\nSpecify, design, install, commission large-scale fluid cryogenic systems\nHands-on operation of compressible fluid systems with pressure vessels, process piping, pumps, valves, compressors, heat exchangers\nDesign, install, commission industrial-scale rotating machinery, e.g. compressors, pumps, and turbines\nRepair and maintenance of industrial-scale process piping, pressure vessels, valves, and filtration systems.\nCreate and release CAD drawings for fabrication\nProject management, including in a matrixed organization\nMust-have requirements:\nAbility to lift up to 50 lbs occasionally\nPerform activities such as stooping, climbing, typing, standing and sitting for extended periods of time\nWillingness to occasionally travel or work required nights/weekends/on-call; potential occasional travel to suppliers or contractors\nDedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics\nSalary 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:\n• Competitive compensation with equity\n• 13 Company-wide Holidays\n• Flexible vacation days\n• 10 sick days\n• Generous parental leave policy\n• Health, dental, and vision insurance\n• 401(k) with employer matching\n• Professional growth opportunities\n• Team-building activities\n#LI-Onsite\n\nAt 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.\n\nWe 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.\n\nThis 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.","company":"Commonwealthfusionsystems5","rawCompany":"commonwealthfusionsystems5","city":"Devens","state":"MA","isRemote":false,"isActive":false,"createdAt":"2026-08-27T11:54:00.300Z","occupations":[{"code":"17-2141.00","title":"Mechanical Engineers","slug":"mechanical-engineers"},{"code":"17-2199.00","title":"Engineers, All Other","slug":"engineers-all-other"},{"code":"17-2041.00","title":"Chemical Engineers","slug":"chemical-engineers"}],"industries":[{"code":"541330","title":"Engineering Services","slug":"engineering-services"},{"code":"333248","title":"All Other Industrial Machinery Manufacturing","slug":"all-other-industrial-machinery-manufacturing"},{"code":"332410","title":"Power Boiler and Heat Exchanger Manufacturing","slug":"power-boiler-and-heat-exchanger-manufacturing"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior Process Engineer","description":"About Commonwealth Fusion Systems:\n\nCommonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.\n\nCombining 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.\n\nWe’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.\n\nNow 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.\n\nIf that’s you and this role fits, we want to hear from you.\n\nJoin the power movement as a Senior Process Engineer\n\nThe 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.\nWhat you'll do:\nLearn the CRYO system ins-and-outs and become a SME for commissioning and operations\nPerform thermal fluid system process design and analysis\nSupport plant operations through commissioning, including occasional shift work\nCreate 2D/3D design drawings and process schematics\nCreate valve, instrument, machinery, and equipment lists\nTroubleshoot machinery, equipment, instrumentation, and controls\nDevelop CONOPs and HMIs for software and controls implementation\nPrepare and execute operating, maintenance, and repair plans and procedures\nWrite specifications, RFIs/RFQs/RFPs, and manage procurements and build-outs\nDevelop interface and performance requirements and hardware specifications and selection\nDesign and fabricate hardware and equipment skids\nPlan acceptance and performance tests and quality inspections\nCoordinate contractor daily activities in the field and factory\nWhat we're looking for:\nBachelor of Science in Mechanical, Chemical, or Process Engineering\nFluid system process engineering design\nHands-on commissioning / operation of mechanical / fluid systems\nThermal fluid system process, equipment, and component design\nCompressible fluid hydraulic, heat and mass transfer, and pressure safety analysis\nSpecification and selection of mechanical and controls hardware\nProcurement and vendor management\nSafety hazards and PPE requirements for plant operations\nFamiliarity around pressurized systems, cryogenic fluids, and rotating machinery\nFamiliarity with electrical and controls diagnostic tools, including multimeter and HART communicator\nFamiliarity with precision tooling, alignments, torque specifications, welding specifications\nFamiliarity with ASME, ANSI, CGA, NFPA, IEEE, OSHA codes and standards\nBonus points for:\nSpecify, design, install, commission large-scale fluid cryogenic systems\nHands-on operation of compressible fluid systems with pressure vessels, process piping, pumps, valves, compressors, heat exchangers\nDesign, install, commission industrial-scale rotating machinery, e.g. compressors, pumps, and turbines\nRepair and maintenance of industrial-scale process piping, pressure vessels, valves, and filtration systems.\nCreate and release CAD drawings for fabrication\nProject management, including in a matrixed organization\nMust-have requirements:\nAbility to lift up to 50 lbs occasionally\nPerform activities such as stooping, climbing, typing, standing and sitting for extended periods of time\nWillingness to occasionally travel or work required nights/weekends/on-call; potential occasional travel to suppliers or contractors\nDedication to safety to mitigate hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics\nSalary 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:\n• Competitive compensation with equity\n• 13 Company-wide Holidays\n• Flexible vacation days\n• 10 sick days\n• Generous parental leave policy\n• Health, dental, and vision insurance\n• 401(k) with employer matching\n• Professional growth opportunities\n• Team-building activities\n#LI-Onsite\n\nAt 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.\n\nWe 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.\n\nThis 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.","datePosted":"2026-08-27T11:54:00.300Z","dateModified":"2026-08-27T11:54:00.300Z","hiringOrganization":{"@type":"Organization","name":"Commonwealthfusionsystems5","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Devens","addressRegion":"MA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"983fa0a51dcca7bbbd677258"},"url":"https://jobsearcher.com/jobs/983fa0a51dcca7bbbd677258"}}