<div><b style="font-size:16px;">About Commonwealth Fusion Systems: </b></div><div><br></div><div><span style="font-size:16px;">Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.</span></div><div><br></div><div><span style="font-size:16px;">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 and suppliers to build the energy industry of the future. </span></div><div><br></div><div><span style="font-size:16px;">We’re in the best position to make it happen. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.</span></div><div><br></div><div><span style="font-size:16px;">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. </span></div><div><br></div><div><span style="font-size:16px;">If that’s you and this role fits, we want to hear from you.</span></div><div><br></div><div><b style="font-size:16px;">Join the power movement as a Cryogenics Engineering Intern</b></div><div><br></div><div><span style="font-size:16px;">The Cryogenics team is an enthusiastic group of full-time engineers with backgrounds that span from Aerospace to National Labs to Start Ups. Our goal is to develop cryogenic helium systems that are critical to keeping the HTS magnets within superconducting temperatures. We work in a fast-paced and strategically collaborative setting that allows us to take designs from concept to hardware within extremely short time spans. We are looking for an energetic co-op student to join our team. Within this co-op, you will be working on engineering design and analysis. </span></div><br><br><h3>Program Details:</h3><ul><li><b>26 week internship</b></li><li>40-50 hours per week with set hourly salary based on year in school</li><li>Opportunity in Devens, MA.  If an intern is going to be on site, you will be responsible for your own transportation and housing</li><li>Specific project assignments and required technical skillset will vary based on the team’s existing need. </li><li>Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD</li><li>Interns must be authorized to work in the United States for any employer</li></ul><h3>What you'll do:</h3><ul><li>Lead and cross-coordinate with various stakeholders on design-build, test, and/or analysis projects, ensuring requirements and key system objectives are being met</li><li>Develop test plans for cryogenics equipment and subsystems</li><li>Identify, purchase, and install hardware to be used in setting up or fixing test configurations</li><li>Run testing of industrial-scale cryogenics equipment and subsystems</li><li>Analyze data from testing industrial-scale cryogenics equipment and subsystems</li><li>Learning objectives would include but not be limited to:</li><li>(1) Process engineering. Read and develop key engineering documents, e.g. process flow diagrams (PFDs), piping &amp; instrumentation diagrams (P&amp;IDs), test plans, test procedures</li><li>(2) Thermohydraulics analysis. Develop calculations, tools, and models, e.g. Excel calculations and tools, 1-D thermohydraulic models (EcoSim), computational fluid dynamics (COMSOL)</li><li>(3) Project management. Build tools to manage and report on project milestones. Manage small budgets.</li><li>(4) Hands-on building and testing. Past examples - flow instrumentation panels, vacuum carts and headers, swagelok tubing setups, helium leak testing configurations, oil removal bakeouts, helium purity measurement and calibration</li></ul><h3>What we’re looking for:</h3><ul><li>Preferred majors include Chemical Engineering, Mechanical Engineering, Electrical/Software Engineering, and Computer Science</li><li>Enthusiasm to learn (design and engineering company processes) and collaborate in a group setting</li><li>Exposure to fluid dynamics and thermodynamics</li><li>Exposure to programmable logic controllers and electrical schematics</li><li>Exposure to CAD software</li><li>Exposure to FEA and/or CFD software</li><li>Interest in entrepreneurship</li></ul><h3>Must-have Requirements:</h3><ul><li>Willingness to travel or work required nights/weekends/on-call occasionally</li><li>Perform activities such as typing, standing, or sitting for extended periods of time</li><li>Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics</li></ul><br><div><span style="font-size:10px;">#LI-Onsite</span></div><div><br></div><div><span style="font-size:16px;">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.</span></div><div><br></div><div><span style="font-size:16px;">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.</span></div><div><br></div><div><b style="font-size:16px;">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.</b></div>

<p>The world needs a fundamentally new source of clean energy to meet our growing energy demands and combat climate change. Scientists have been studying fusion for decades and have made significant progress, but have yet to achieve its potential as a commercial power source. However, its promise has continued to drive interest with the understanding that successfully deployed fusion power would transform the world&rsquo;s energy landscape.</p>
<p>Commonwealth Fusion Systems (CFS) was spun out of MIT's Plasma Science and Fusion Center to leverage the decades of fusion research combined with the innovation and speed of the private sector. Supported by the world&rsquo;s leading investors in breakthrough energy technologies, the CFS team is uniquely positioned to deliver the fastest path to commercial fusion energy. CFS has assembled a world-class team to design and build fusion machines. This team includes experts in magnets, manufacturing, and plasma physics dedicated to the mission of delivering clean, limitless fusion power to the world.</p>

Intern - Cryogenics Engineer - Fall Co-op 2026

<div><b>About Commonwealth Fusion Systems: </b></div><div><br /></div><div><span>Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.</span></div><div><br /></div><div><span>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 and suppliers to build the energy industry of the future. </span></div><div><br /></div><div><span>We’re in the best position to make it happen. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.</span></div><div><br /></div><div><span>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. </span></div><div><br /></div><div><span>If that’s you and this role fits, we want to hear from you.</span></div><div><br /></div><div><b>Join the power movement as a Cryogenics Engineering Intern</b></div><div><br /></div><div><span>The Cryogenics team is an enthusiastic group of full-time engineers with backgrounds that span from Aerospace to National Labs to Start Ups. Our goal is to develop cryogenic helium systems that are critical to keeping the HTS magnets within superconducting temperatures. We work in a fast-paced and strategically collaborative setting that allows us to take designs from concept to hardware within extremely short time spans. We are looking for an energetic co-op student to join our team. Within this co-op, you will be working on engineering design and analysis. </span></div><br /><br /><h3>Program Details:</h3><ul><li><b>26 week internship</b></li><li>40-50 hours per week with set hourly salary based on year in school</li><li>Opportunity in Devens, MA.  If an intern is going to be on site, you will be responsible for your own transportation and housing</li><li>Specific project assignments and required technical skillset will vary based on the team’s existing need. </li><li>Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD</li><li>Interns must be authorized to work in the United States for any employer</li></ul><h3>What you'll do:</h3><ul><li>Lead and cross-coordinate with various stakeholders on design-build, test, and/or analysis projects, ensuring requirements and key system objectives are being met</li><li>Develop test plans for cryogenics equipment and subsystems</li><li>Identify, purchase, and install hardware to be used in setting up or fixing test configurations</li><li>Run testing of industrial-scale cryogenics equipment and subsystems</li><li>Analyze data from testing industrial-scale cryogenics equipment and subsystems</li><li>Learning objectives would include but not be limited to:</li><li>(1) Process engineering. Read and develop key engineering documents, e.g. process flow diagrams (PFDs), piping &amp; instrumentation diagrams (P&amp;IDs), test plans, test procedures</li><li>(2) Thermohydraulics analysis. Develop calculations, tools, and models, e.g. Excel calculations and tools, 1-D thermohydraulic models (EcoSim), computational fluid dynamics (COMSOL)</li><li>(3) Project management. Build tools to manage and report on project milestones. Manage small budgets.</li><li>(4) Hands-on building and testing. Past examples - flow instrumentation panels, vacuum carts and headers, swagelok tubing setups, helium leak testing configurations, oil removal bakeouts, helium purity measurement and calibration</li></ul><h3>What we’re looking for:</h3><ul><li>Preferred majors include Chemical Engineering, Mechanical Engineering, Electrical/Software Engineering, and Computer Science</li><li>Enthusiasm to learn (design and engineering company processes) and collaborate in a group setting</li><li>Exposure to fluid dynamics and thermodynamics</li><li>Exposure to programmable logic controllers and electrical schematics</li><li>Exposure to CAD software</li><li>Exposure to FEA and/or CFD software</li><li>Interest in entrepreneurship</li></ul><h3>Must-have Requirements:</h3><ul><li>Willingness to travel or work required nights/weekends/on-call occasionally</li><li>Perform activities such as typing, standing, or sitting for extended periods of time</li><li>Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics</li></ul><br /><div><span>#LI-Onsite</span></div><div><br /></div><div><span>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.</span></div><div><br /></div><div><span>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.</span></div><div><br /></div><div><b>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.</b></div>

Intern - Cryogenics Engineer - Fall Co-op 2026

About the Job

About the Company

Commonwealth Fusion Systems (CFS)

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