{"schemaVersion":"jobsearcher.job.v1","id":"285659c3c17db586b8685e70","url":"https://jobsearcher.com/jobs/285659c3c17db586b8685e70","canonicalUrl":"https://jobsearcher.com/jobs/285659c3c17db586b8685e70","title":"Lead Technician, Assembly Testing","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 Lead Technician, Assembly Testing\n\nThe Mechanical Commissioning Field Lead is responsible for leading a small team (2-3 technicians) in the execution of SASY testing activities under the direction the Manger of Assembly Testing with guidance and support from Test Engineering. These activities may also include assembly activities, as testing will take place in parallel with SPARC assembly. The lead technician will have daily hands-on responsibilities\n\nWhat you'll do:\nExecute complex testing procedures in the field with a primary focus on mechanical testing to include pneumatic pressure proofing and leak detection using helium leak detector.\nWork under the direction of Manager, Assembly Testing, to execute test procedures\nServe as front line supervisor for test technicians by providing guidance and instruction to technicians to facilitate safe, effective, and efficient execution of work\nIdentify issues and potential issues pro-actively, ensure accurate submission to our work and quality management systems and assist to drive issues to successful conclusions\nEnsure completion of all test documentation in an accurate and timely fashion\nCoach technicians to embody the CFS behaviors and guiding principles in all interactions\nRepresent the SASY Test team in collaboration with all CFS cross-functional teams as required\nAdhere to the highest standards of safety and ensure that activities taking place are being performed in accordance with CFS safety policies and applicable regulatory safety standards\nWhat we’re looking for:\nHS Diploma\nMinimum 5 years of hands-on mechanical testing experience, with a heavy focus on pneumatic pressure proofing and helium leak detection using mass spectrometers.\nProven experience leading small to medium-sized crews of technicians performing complex mechanical or testing activities.\nDemonstrated experience with high-vacuum hardware: Must be proficient in plumbing temporary test fixtures and making connections using KF, CF, VCR, compression fittings, and NPT.\nFamiliarity with setting up and connecting vacuum systems, including turbomolecular pumps and leak detectors.\nMid-level proficiency in with Microsoft or Google productivity software\nBonus points for:\nFormal training (40+ hours) or active progression toward an ASNT Level II NDT certification in Leak Testing.\nDirect experience with specific leak testing methodologies (e.g., tracer probe, hood technique, and helium-filled object techniques).\nPrior experience working in fusion-relevant, aerospace, or semiconductor cleanroom environments.\nExperience with low or high voltage electrical testing\nMust-have requirements:\nAbility to occasionally lift up to 50 lbs\nPerform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time\nWork in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics\nWillingness to travel or work required nights/weekends/on-call occasionally\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.\n\nBenefits 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":"2026-09-06T13:29:16.660Z","occupations":[{"code":"17-3027.00","title":"Mechanical Engineering Technologists and Technicians","slug":"mechanical-engineering-technologists-and-technicians"},{"code":"17-3024.00","title":"Electro-Mechanical and Mechatronics Technologists and Technicians","slug":"electro-mechanical-and-mechatronics-technologists-and-technicians"},{"code":"49-1011.00","title":"First-Line Supervisors of Mechanics, Installers, and Repairers","slug":"first-line-supervisors-of-mechanics-installers-and-repairers"}],"industries":[{"code":"541715","title":"Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)","slug":"research-and-development-in-the-physical-engineering-and-life-sciences-except-nanotechnology-and-biotechnology"},{"code":"541330","title":"Engineering Services","slug":"engineering-services"},{"code":"541380","title":"Testing Laboratories and Services","slug":"testing-laboratories-and-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Lead Technician, Assembly Testing","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 Lead Technician, Assembly Testing\n\nThe Mechanical Commissioning Field Lead is responsible for leading a small team (2-3 technicians) in the execution of SASY testing activities under the direction the Manger of Assembly Testing with guidance and support from Test Engineering. These activities may also include assembly activities, as testing will take place in parallel with SPARC assembly. The lead technician will have daily hands-on responsibilities\n\nWhat you'll do:\nExecute complex testing procedures in the field with a primary focus on mechanical testing to include pneumatic pressure proofing and leak detection using helium leak detector.\nWork under the direction of Manager, Assembly Testing, to execute test procedures\nServe as front line supervisor for test technicians by providing guidance and instruction to technicians to facilitate safe, effective, and efficient execution of work\nIdentify issues and potential issues pro-actively, ensure accurate submission to our work and quality management systems and assist to drive issues to successful conclusions\nEnsure completion of all test documentation in an accurate and timely fashion\nCoach technicians to embody the CFS behaviors and guiding principles in all interactions\nRepresent the SASY Test team in collaboration with all CFS cross-functional teams as required\nAdhere to the highest standards of safety and ensure that activities taking place are being performed in accordance with CFS safety policies and applicable regulatory safety standards\nWhat we’re looking for:\nHS Diploma\nMinimum 5 years of hands-on mechanical testing experience, with a heavy focus on pneumatic pressure proofing and helium leak detection using mass spectrometers.\nProven experience leading small to medium-sized crews of technicians performing complex mechanical or testing activities.\nDemonstrated experience with high-vacuum hardware: Must be proficient in plumbing temporary test fixtures and making connections using KF, CF, VCR, compression fittings, and NPT.\nFamiliarity with setting up and connecting vacuum systems, including turbomolecular pumps and leak detectors.\nMid-level proficiency in with Microsoft or Google productivity software\nBonus points for:\nFormal training (40+ hours) or active progression toward an ASNT Level II NDT certification in Leak Testing.\nDirect experience with specific leak testing methodologies (e.g., tracer probe, hood technique, and helium-filled object techniques).\nPrior experience working in fusion-relevant, aerospace, or semiconductor cleanroom environments.\nExperience with low or high voltage electrical testing\nMust-have requirements:\nAbility to occasionally lift up to 50 lbs\nPerform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time\nWork in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics\nWillingness to travel or work required nights/weekends/on-call occasionally\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.\n\nBenefits 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":"2026-09-06T13:29:16.660Z","dateModified":"2026-09-06T13:29:16.660Z","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":"285659c3c17db586b8685e70"},"url":"https://jobsearcher.com/jobs/285659c3c17db586b8685e70"}}