Commonwealth Fusion Systems jobs in Somerville, MA

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Techno-economic Analyst For fusion power plants to be successful they must be economically competitive with other power generation technologies. The techno-economic analyst is responsible for developing models critical to evaluating fusion power plants' financial viability and commercial desirability. The candidate will work closely with internal CFS team members to create and evolve economic models, run sensitivity analysis, identify opportunities for improvement and provide input to design, engineering, and R&D on impacts. This role will serve an important function within the business development team supporting communicating the benefits of fusion energy to customers and key stakeholders.What you'll do: Deliver: Continue the development of techno-economic modeling at CFS to characterize the future costs and benefits of ARC, the world's first commercial fusion power plant Incorporate expectations for learning and experience benefits as the company develops additional power plants Establish and maintain company best practices and lessons learned related to analytical methods and models. Systematically work to improve models and analysis over time Develop and assess ARC pricing and go to market approaches, including alternative applications of ARC beyond electricity Track and maintain current assessment of ARC competitiveness compared to other energy solutions Model the economic impact of ARC power plants for communities, regions, and states Support individual project level analysis, including regional and local specifics, financing structures, and incentives Expand economic modeling to target foreign markets to help inform go-to-market strategies Work closely with the Scientific Software team to maintain the modeling tools and their underlying assumptions over time Collaborate closely with Research and Development (R&D), Engineering, Manufacturing, Scientific Software, System Engineers, Finance, Business Development, and external stakeholders to collect primary data, populate techno-economic models, productionalize the model, and validate model fidelity Provide support for non-power plant business functions and other duties as assigned Prepare briefing materials, write and publish research results in internal technical reports and public facing presentations, including collaborations with key external partners Support Investor Relations, Business Development, Corporate Finance, and Engineering teams as needed, and on-demand with queries and reports Strategize: Work closely with procurement to refine estimates for costs for the power plant and associated systems Identify key areas of risk, uncertainty, and variability within models and develop mitigation strategies with the business to alleviate where possible Serve as a feedback loop to the R&D and engineering organizations to understand the key levers to continuously drive down ARC costs and LCOE Synthesize quantitative results to provide insight into potential future technology research and development opportunities and design decisions Problem Solve: Apply quantitative and qualitative research, case studies, literature reviews, and learnings from internal and external subject matter experts to identify key variables and sensitivities important to determining the costs and value of ARC Model the first-of-a-kind and future generations of fusion power plants under a wide range of development and deployment scenarios Support the evaluation of new R&D opportunities, Open Innovation pathways, technology advancement, and market opportunities Respectfully raise concerns, providing a sound rationale or data to support perspectives Support potential customers, sponsors, partners, and investors in diligence processes Support management in developing scope, budget, and schedule for new projects based on matching expertise and capabilities to research needs and project opportunities What we're looking for: Bachelor's Degree in Engineering, Engineering Technologies, Business, Finance, Economics, Math, Physics or a related field Exposure to or professional knowledge of energy systems Experience working on quantitative analysis with probabilistic models Experience working in cross-functional teams and facilitating collaboration across domains Experience managing stakeholder relationships, including prioritizing and executing disparate sets of deliverables on tight timelines with clear communication MS Excel - Mastery MS Power Point - Proficiency Probabilistic modeling and forecasting Ability to work collaboratively in a team environment as well as autonomously to close gaps. Capable of executing on mid to long-term assignments that are loosely defined Understand the calculation, derivation, and drivers of variability of key industry metrics including, but not limited to, levelized cost of energy, overnight capital costs, internal rate of return, and utility return on equity Professional knowledge and understanding of thermodynamics and engineering fundamentals, with ability to solve analytical problems related to energy usage and plant optimization from first principles Generates work plans, defines milestones for own tasks, and helps define processes that impact direct work. Contributes to process improvement Strong organizational abilities to manage many various cases and scenarios Ability to map out and understand complex interconnected systems Exquisite attention to detail applied across a multitude of systems, ensuring comprehensive analysis and identification of gaps in quality or detail Reliable and persistent work ethic, seeing tasks through to completion. Stays determined in the face of uncertainty and setbacks Ability to identify the right level of detail for a given task and flexibility to adapt to modeling both rough, quick estimates for establishing development priorities and detailed, reliable models for finalizing project specifications Adaptability to a start-up environment, capability to take initiative, develop own tasks and timelines, and solve broad, ambiguous problems Operates with general guidance from management and increasingly takes Bonus points for: 5-10 years of relevant industry experience Experience with detailed process modeling of emerging technologies and techno-economic models of new technologies and systems Cross-functional experience in energy system engineering, business development, and financial modeling Experience developing probabilistic models with a focus on energy system modeling and optimization Comfort with mathematical modeling and tool development in python Must-have requirements: Perform activities such as typing, standing, and sitting, for extended periods of time Willingness to occasionally travel or work required nights/weekends/on-call Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics #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.

Welcome to the future of nuclear energy, where Westinghouse Electric Company is leading the field with expertise and innovation to shape the power of tomorrow. At Westinghouse, innovation is in our DNA. We are creative. We think differently. We reimagine the possible across the nuclear industry every day. Opportunity Overview: Nuclear Procedure Writer - 6 months Glen Allen, VA Supporting Corporate Emergency Preparedness procedure development for Fleet Emergency Plan License Amendment Request (LAR) changes Your Day-to-Day: Mark up and revise procedures associated with Fleet Emergency Plan LAR Changes. Who You Are: High School Diploma or Equivalency Nuclear or a regulated utility/energy company Experience in the last 2 years writing procedures in emergency preparedness or operations for nuclear power plants Must have hands-on experience in the last 6-12 months of having made changes to procedures themselves in formatting software Experienced in the use of FrameMaker and Documentum/DocMan/DocEM software - 2+ years' experience Experienced in the Adobe, including performing mark-ups, distilling, and use of AdobeSign for routing signatures. Our Safety Pledge to You: If you are as committed to your success as we are committed to your safety, then this is the position for you! For us, our guiding principle has always been and will continue to be the safety of our people. It's that simple! Why WECTEC Staffing Services? WECTEC Staffing Services delivers customer-focused solutions, offering everything from high-volume, cost-effective staffing to specialized niche roles, while maintaining best-in-class service. Our employees bring expertise across technical and corporate functions, supporting international contracts in over five countries. We invite you to explore opportunities within our distinguished global talent network. WECTEC Staffing Services offers competitive pay to all of our employees. Additionally, most positions qualify for benefits including the following: * Comprehensive Health and Income Protection Benefits * 401(k) Savings Plan * Paid Vacations for Qualifying Positions We are committed to transparency and equity in all our people practices. The base salary range for this position, which is dependent upon experience, qualifications and skills, is estimated to be. $55.00 - $60.00 WECTEC Staffing Services continues to successfully place professional and technical resources into key roles globally. You can learn more by visiting

Field Service Technician - Level 1 - Associate - Contract 6 Months Crows Landing, CA - 100% Onsite No per diem or relocation being offered Your Day-to-Day: While working under the supervision of a Senior Technician, this Resource will be responsible for vegetation management. Responsibilities: * Mowing * Application of Herbicide * Servicing Equipment * Towing as needed Who You Are: * Education: High School Diploma or equivalent. Ability to read service orders and basic circuit diagrams. * Relevant Experience: 0 or more years of experience * Help with equipment installation, troubleshooting, and maintenance. * Learn and apply procedures related to process and operations Our Safety Pledge to You: If you are as committed to your success as we are committed to your safety, then this is the position for you! For us, our guiding principle has always been and will continue to be the safety of our people. It's that simple! Why WECTEC Staffing Services? WECTEC Staffing Services delivers customer-focused solutions, offering everything from high-volume, cost-effective staffing to specialized niche roles, while maintaining the best service. Our employees bring expertise across technical and corporate functions, supporting international contracts in over five countries. We invite you to explore opportunities within our distinguished global talent network. WECTEC Staffing Services offers competitive pay to all of our employees. Additionally, most positions qualify for benefits including the following: * Comprehensive Health and Income Protection Benefits * 401(k) Savings Plan * Paid Vacations for Qualifying Positions We are committed to transparency and equity in all our people practices. We estimate the base salary range for this position, which is dependent upon review of qualifications, to be $30/hour to $37/hour. WECTEC Staffing Services continues to place technical resources into important roles globally. You can learn more by visiting

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 an Inventory Lead As a lead on the inventory team this leader is responsible for assisting the team in meeting companyobjectives through warehouse and materials management.What you'll do: Obey and enforce all CFS Safety guidelines and policies in the warehouse; correct any unsafe conditions or behaviors while maintaining a clean work environment Receive and verify purchase orders, inventory transfers, and stock items appropriately Lead team in all inventory related activities Monitor and control inventory integrity; resolve problems in a timely manner Lead team in completing cycle counts and reconciliations Collaborate with management to allocate workforce resources to complete assignments and achieve deadlines Identify and execute 5S improvements Research and correct inventory inaccuracies and perform inventory adjustments where necessary Prepare and maintain records of inventories, shortages, shipments, expenditures, and goods used or issued Track and report non-conforming parts Identify, document and quarantine damaged products Assist the safety team in maintaining Material Safety Data Sheets for incoming materials Ensure compliance with CFS Hazardous Material storage plans Execute incoming inspection of components in coordination with the CFS Quality Assurance and Quality Control team Ability to operate various Material Handling Equipment and obtain a DOT License What we're looking for: High School Diploma (or equivalent) 1+ years experience in Inventory Control Minimum of 3 years experience in ERP functionality Experience in a start-up or high growth environment Experience in manufacturing environment Proven experience in Inventory Control processes Experience with Warehouse Operations Inventory Management skills Strong computer skills with MS office or G-Suite applications (including Excel) Strong written and verbal communication skills Inventory & warehousing operational knowledge Customer service excellence Bonus points for: Bachelor's Degree Previous team lead experience Must-have requirements: Ability to occasionally lift up to 50 lbs Perform activities such as stopping, typing, standing, and sitting for extended periods of time Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics Willingness to travel or work required nights/weekends/on-call occasionally $30 - $41 an hour 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• 12.5 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 #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.

Are you interested in being part of an innovative team that supports Westinghouse's mission to provide clean energy solutions? At Westinghouse, we recognize that our employees are our most valuable asset and we seek to identify, attract and recruit the most qualified talent while recognizing and encouraging the value of diversity in the global workplace. About the role: As a Decontamination Technician you will Perform housekeeping / decontamination activities in all Radiological Control Areas. Operate various test equipment and machines as needed to perform duties such as high-pressure washers, laundry machines, RP meters, etc… Due to the broad diversity of work activities in the classification, most employees may be required to certify to all Decon specific tasks as directed by the Radiation Protection department. You will report to the site coordinator and be located at your assigned plant. Key Responsibilities: * Ability to climb ladders and work at multiple heights * Meet all applicable requirements to maintain unescorted access * Able to lift 50 pounds * Ability to complete training / certification to operate different equipment including: re: o High pressure sprayers o vacuums o Small pendant cranes o Hoist o Miscellaneous equipment * Understand oral and written communications, technical requirements, procedures and directives associated with working at a nuclear plant. * May require a respirator physical and training * Work in adverse conditions such as high temperatures, confined spaces. Qualifications: Minimum of High School Diploma or GED Can pass a drug test Can pass a security background We are committed to transparency and equity in all of our people practices. The hourly pay range for this position, which is dependent upon experience, qualifications and skills, is estimated to be $13 to $20 per hour. Internal Job Description Footer Why Westinghouse? Our benefits package is tailored to meet the diverse needs of our employees, while also promoting wellness and career growth. The following are representative of what we offer: Comprehensive Medical benefits which could include medical, dental, vision, prescription coverage and Health Savings Account (HSA) with employer contributions options Wellness Programs designed to support employees in maintaining their health and well-being including Employee Assistance Program providing support for our employees and their household members Company Holidays Global Recognition and Service Programs to celebrate employee accomplishments and service Westinghouse Electric Company is the global nuclear energy industry's first choice for safe, clean, and efficient energy solutions. We enable our delivery of this vision by living our value system: Safety and Quality Integrity and Trust Customer Focus and Innovation Speed and Passion to Win Teamwork and Accountability While our Global Headquarters are located in Cranberry Township, PA, we have over 11,000 employees working at locations in 19 different countries. You can learn more by visiting *********************************** Westinghouse is an Equal Opportunity Employer including Veterans and Individuals with Disabilities Get connected with Westinghouse on social media: Twitter | Facebook | LinkedIn| YouTube Employment opportunities may require access to information which is subject to the export control regulations of the United States. Hiring decisions for such positions are required by law to be made in compliance with these regulations. Applicants for employment opportunities in other countries must be able to meet the comparable export control requirements of that country and of the United States.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Multiphysics Modeler The Senior Multiphysics Modeler will work closely with the CFS tritium program and process engineering team to develop a fuel cycle model for the world's first fusion power plant, ARC, located in Chesterfield County, Virginia. The senior multiphysics modeler will develop simulation toolkits and workflows that integrate first-principles multiphysics simulations with industrial process models to support technology development and subsystem integration for key fuel cycle systems, supported by the CFS fuel team to understand system requirements. The ideal candidate is an expert in heat and mass transport modeling, with an appreciation for simplicity and drive to build. This individual knows the power of optimizing devices by tuning material parameters, and appreciates a simple non-dimensional analysis and rigorous integrated simulations as the problem space requires. The candidate enjoys teaching and building tools that others can use independently. Applicants must have a degree in a relevant engineering or science discipline as well as experience in process modeling and programming. Applicants must have a demonstrated ability to apply a first principles approach in solving complex engineering problems and experience conducting cost-benefit to evaluate the economics of proposed solutions. Applicants must have demonstrated success working on engineering projects in multi-disciplinary teams generating effective solutions to complex problems.What you'll do: Lead the development of an integrated power plant fuel cycle model Develop models for unit operations and incorporate multi-effects in components Develop simulation tools to enable targeted R&D for key fuel cycle technologies Own the fuel cycle simulation tools and models Validate models and identify key R&D requirements to enable validation where there are currently gaps in the literature Collaborate cross-functionally with both internal and external experts to ensure fuel cycle models are feasible, economic and state-of-the-art Develop processes and layouts for fueling subsystem blocks that are communicated through standard engineering documents Generate detailed work plans and define milestones, integrated with R&D, to deliver validated models Provide guidance to colleagues for use of developed modeling tools and outputs Identify emerging trends and opportunities and influence CFSs's fuel cycle modeling strategy What we're looking for: Master's degree or similar experience with 7+ years in chemical engineering, mechanical engineering, physics, materials science, physical chemistry or similar 5+ years experience modeling process systems 5+ years experience in computer programming Knowledge of transport phenomena and chemical processes in gasses Experience building integrated process models Process engineering and systems integration Experience managing large data sets Understanding of scalable simulations Track record in version control Data reduction and results analysis Bonus points for: Experience with Python and/or Matlab Experience with multiphysics tools such as Comsol Exposure to process simulators like HYSYS Use of engineering management tools Confluence/JIRA and remote collaboration tools Fusion energy experience Chemical engineering Atom and molecular mass transport Must-have requirements: Ability to occasionally lift up to 50 lbs Perform activities such as sitting, typing, standing, stooping, or climbing for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics Willingness to travel or work required nights/weekends/on-call occasionally #LI-Hybrid 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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Diagnostician Commonwealth Fusion Systems is assembling the high-field SPARC tokamak, which aims to be the first magnetic fusion device to achieve net fusion energy, and is predicted to be able to achieve high gain and fusion power up to 140MW. We are completing the design and beginning the assembly and installation of diagnostic systems that will be used to control the plasma and deliver the scientific data necessary to complete the design of ARC. These include approximately 40 sub-systems covering magnetics, interferometry, neutral pressure, x-ray to visible spectroscopy, camera imaging, bolometry, neutrons, Thomson scattering, electron cyclotron emission, reflectometry, Langmuir probes and structural temperature and strain sensing. A more detailed overview can be found at: https://pubs.aip.org/aip/rsi/article/95/10/103***********. CFS is looking to grow the SPARC team in order to complete back-end design and move diagnostics through fabrication, assembly, commissioning and utilization. Presently the diagnostics team has enough expertise to support all major diagnostic systems, but we are looking to add a generalist who has experience in multiple diagnostics to ensure our team can deliver measurements on SPARC's fast timeline. Candidates will work as part of an integrated diagnostic team along with MIT-PSFC partners and fusion community collaborators from around the world to demonstrate net energy from a tokamak for the first time. CFS encourages applications from both senior and early career fusion scientists and those interested in cross-industry career changers to help us build a diverse team to meet our mission goals.What you'll do: Shepherd SPARC diagnostic sub-systems through final design, working with a team of scientists, designers, analysts and engineers Integrate technical input from experts in the SPARC team to ensure diagnostic designs will be usable to achieve SPARC's mission goals Develop the diagnostic's assembly, installation, calibration and commissioning plans to ensure SPARC is able to achieve first plasma on-schedule Integrate the diagnostic into the plant-level and real-time plasma control systems Participate in the testing and operation of diagnostic systems that balances learning how to operate SPARC with obtaining physics results as quickly as possible Contribute to a strong safety culture Collaborate with CFS designers and analysts as well as provide feedback to academic partners providing input to SPARC diagnostic designs What we're looking for: Bachelor's degree in a relevant engineering field (mechanical, aerospace, civil or nuclear) Participated in the design of a new or upgraded scientific instrument of the scale and complexity of those used in magnetically confined fusion Demonstrated examples of using scientific instruments to support an operational and/or research mission Developed software using Python, Matlab, C++ or equivalent for analysis of experimental data and automation of lab equipment Relevant hands-on knowledge/skills specific to diagnostic systems listed in summary (e.g. vacuum systems, lasers, calibration sources, etc.) Ability to understand concepts and tradeoffs that bridge engineering and physics Bonus points for: Participated in the design and implementation of a plasma diagnostic for a magnetically confined fusion experiment at University-scale or above Must-have requirements: Ability to occasionally lift up to 50 lbs Perform activities such as climbing, typing, standing, or sitting for extended periods of time Willingness to travel or work required nights/weekends/on-call occasionally Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Technician - Welding and Assembly Join a cutting-edge team working to assemble, weld and test high precision electromechanical assemblies - critical to unlocking the future of clean energy. As a (TIG) Welder and Technician, you'll perform complex electromechanical assembly and in-house welding of large-scale metallic structures. This work will also include micro TIG welding on smaller component assemblies. This is a hands-on role in a fast-paced, highly collaborative environment, with a focus on quality, safety, and continuous improvement. What you'll do: Assemble electromechanical components per detailed work instructions, drawings, and wiring diagrams Operate production, testing, and high-powered magnet equipment Use calibrated mechanical tools (e.g., torque wrenches, micrometers, calipers) Troubleshoot assembly issues and suggest process improvements Perform precision soldering, wiring, epoxy potting, injection molding, and vacuum system work Collaborate with engineers to refine processes and improve manufacturability Weld metallic structures and tooling using GMAW, GTAW, SMAW, and other methods Read and analyze blueprints, perform detailed measurements, and plan welding layouts Use manual welding equipment to produce welds in various positions (flat, vertical, overhead) Weld stainless steel and copper, including pressure-rated and critical applications Participate in welding equipment qualifications and inspections Provide design feedback on weld geometries and material choices What we're looking for: High school diploma or equivalent 3+ years of experience in electromechanical or electrical/mechanical assembly 3+ years of welding experience with structural systems and tooling Proficiency with a variety of hand tools, power tools, and measurement devices Ability to read and interpret technical documents, blueprints, and schematics Documented training or certifications in welding processes (e.g., GMAW, GTAW, SMAW) Must-have requirements: Ability to lift up to 50 lbs regularly Perform activities such as stooping, typing, standing, and sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics Willingness to travel occasionally or do required nights/weekends/on-call #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Quality Control Inspector - Second Shift CFS is seeking an experienced Quality Inspector to assist in the inspection and test activities for the SPARC project. You will perform daily inspections on precision components using a variety of advance inspection equipment during receiving, in-process and assembly stages. You will also perform detailed documentation reviews of source inspection documentation, including material certifications, dimensional inspection results, chemical analysis, and other quality reports and information. ***This is a second shift role***Rate of pay: $30 - $45 per hour + 10% differential What you'll do: Conduct dimensional inspection of high precision machined components at receiving, in-process and pre-assembly stages as required Execute inspections to required accuracy Prepare and document detailed inspection reports and nonconformances as needed Analyze and interpret vendor submitted dimensional inspection reports Review and approve inspection and material test reports from vendors Support other mechanical testing and welding inspection needs as required Support ISO 9001:2015 activities on the shopfloor Reviews blueprints and documentation to ensure appropriate materials are used and specifications are followed Interface with Technicians on issues related to quality and help them in understanding and interpreting quality specifications and technical drawings What we're looking for: High school diploma or GED 5+ years of experience in advanced mechanical inspections Ability to read & interpret blueprints Proficient in interpretation and usage of ASME Y14.5 (Geometric Dimensioning and Tolerance) Be able to set up, maintain, and use varieties of inspection hand tools (caliper, micrometer, bore gages, rings & plug gages, profilometer, coating thickness gage, comparator, sine bar, etc.) CMM, Romer Arm, etc Bonus points for: Experience in Aerospace or Automotive Industry Experience using portable metrology tools such as a Creaform laser scanner, Romer arm, etc. Polyworks experience Odoo software experience Certified Mechanical Inspector Must-have Requirements: Ability to lift up to 50 lbs Perform activities such as stooping, climbing, typing, standing, and sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics Willingness to travel occasionally or do required nights/weekends/on-call #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Principal Environmental, Health and Safety Engineer We are seeking a highly skilled and motivated Principal Environmental, Health and Safety Engineer to join our team at CFS. The CFS Principal Environmental, Health and Safety Engineer will play a pivotal role in ensuring the safety of both the SPARC and future ARC projects; ambitious endeavors aimed at developing cutting-edge fusion power technology. In this role, you will be responsible for overseeing safety strategies, workflows, and practices for both projects, ensuring compliance with relevant codes, regulations, and industry standards. The CFS Principal Environmental, Health and Safety Engineer will collaborate with cross-functional teams, review and update safety guidance, support the definition of and response to major transients, and implement safety standards for various activities within the SPARC and ARC programs. The Principal Environmental, Health and Safety Engineer provides technical support for engineering design, assembly, commissioning, and operations for the SPARC Project and future ARC Projects. Engineer focus areas include, but are not limited to Equipment Safety, Process Safety, and Operational Safety. This role supports overall EHS initiatives.What you'll do: Safe Design Provides technical support for safe engineering design, build, and operations of SPARC and ARC Ensures that safety is designed into systems and that controls are incorporated and remain effective through design changes Review and support updated guidance for redundancy, fault tolerance, and quality levels in collaboration with relevant stakeholders, with specific focus on the needs of safety critical systems Ensures that all design projects comply with regulatory requirements including, but not limited to, those promulgated by the Occupational Safety and Health Administration (OSHA), and the Environmental Protection Agency (EPA) Development of code compliance analyses and engineering design guides based on industry standard codes and guidelines, to the extent to which they are applicable Applies engineering concepts and methodologies to enhance the delivery of the SPARC and ARC Tokamaks by providing a technologically advanced, safe, and reliable environment Partake in and review risk assessments (HAZOP, FMECA, JHA, etc.) Able to evaluate information and provide opinion as to the safety of a concept or design Transfer lessons learned from the aforementioned work to the ARC project, staying up to date on relevant progress in the fusion regulatory landscape Safe Build and Operation of SPARC and ARC Ensures safe, reliable, and a precisely controlled assembly, commissioning, and operating environment through development and management of safety programs specific to SPARC and ARC projects Conducts incident investigations and liaises with engineers, management, and health and safety regulatory authorities to identify causes of accidents and prevent their recurrence Identifies and reviews hazard, risk and opportunities on an ongoing and proactive basis and ensure that appropriate follow up actions are being implemented Leads action plans by identifying potential emergency situations, creating emergency communication plans that address operation or business disruptions Review assembly and construction activities, commissioning and test readiness reviews, and operational plans and procedures with a focus on safety Collaborate with relevant engineering and operations teams and EHS to ensure adherence to defined safety standards and guidelines Cross-Functional Partnerships In collaboration with the EHS and Radiation Protection teams, implements and administers safety programs that protect employees and reduce risk Partners with Security to implement programs and technology that protect employees and assets Promote environmental, health and safety culture through training and education solutions related to environmental, health and safety issues, practices and risks and coach others as the need arises Coordinates site activities with regulatory agencies to verify compliance, resolve situations, and maintain a cooperative working relationship Support the development and implementation of a consistent system for tracking and closing engineering safety-related issues for the SPARC and ARC projects, working closely with the rest of the EHS team to ensure all issues are appropriately addressed Supervisory Works closely with a cross-functional team, providing guidance and supervision to team members involved in safety-related initiatives and compliance efforts within the SPARC and ARC projects Leads committee type discussions, working meetings, and implementation of project needs and actions What we're looking for: Bachelor's or Master's degree in Engineering, Physics, or a related field 15+ years of progressive experience in a safety role, at least 5 of which were in a leadership position within a high-risk industry, preferably in the field of power or process plant development, or related areas In-depth knowledge of safety codes, regulations, and awareness of emerging industry standards Proven experience in defining and implementing safety strategies for complex engineering projects Strong analytical skills to conduct detailed gap analyses of industry standards and internal safety practices Strong analytical skills to evaluate existing safety practices and identify opportunities for improvement by benchmarking against emerging industry best practices Excellent communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams and external stakeholders Demonstrated leadership abilities, including the capacity to empower and motivate a team toward achieving safety-related objectives Bonus points for: Knowledge of fusion or accelerator regulatory frameworks Experience in developing or managing a Process Safety Management (PSM) program at a facility or company is a plus Certification in relevant safety management programs (e.g., CSP, CIH, or equivalent) is a plus Must-have Requirements: Ability to occasionally lift up to 50 lbs Perform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics Willingness to travel or work required nights/weekends/on-call occasionally #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 an Environmental, Health, Safety and Security Intern We are looking for talented technical interns to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.Program Details: 12-16 week internship program 40-50 hours per week with set hourly salary based on year in school Opportunities vary between onsite in Somerville, MA and Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing Specific project assignments and required technical skillset will vary based on the team's existing need. Opportunities available for currently enrolled college students in all levels of schooling from bachelor's degree to PhD Interns must be authorized to work in the United States for any employer What you'll do: Perform a wide range of Safety and Health disciplines to implement workplace safety and industrial hygiene processes Develop or improve specific EHS programs as required such as risk assessment, audits/inspections, and other programs as identified What we're looking for: Hands-on experience through academic research, project teams, machine shops, hackathons, or industry internships Demonstration of exceptional results through a range of different pursuits High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills Must-have Requirements: Willingness to travel or work required nights/weekends/on-call occasionally Perform activities such as typing, standing, or sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics $23 - $35 an hour Rates are aligned to your current year in school, ensuring equitable and consistent pay across our intern program. For BS interns, the hourly rate is $23-$29For MS/PhD interns, the rate is $32-$35 Benefits included for full-time interns:• 40 hours of sick time• Health, dental, and vision insurance• 401(k) with employer matching (must be 21 years of age to enroll)• Professional growth opportunities• Team-building activities #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Multi-physics Analysis Intern We are looking for talented technical interns to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.Program Details: 12-16 week internship program 40-50 hours per week with set hourly salary based on year in school This opportunity is in Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing Specific project assignments and required technical skillset will vary based on the team's existing need. Opportunities available for currently enrolled college students in all levels of schooling from bachelor's degree to PhD Interns must be authorized to work in the United States for any employer What you'll do (Projects this team member will work on may include, but not limited to): Modeling: Develop and first-order 1D and 2D models to simulate the thermal, electromagnetic, and/or wave mechanics of quench and cable systems. Trade-space Analysis: Conduct comprehensive analysis of various design parameters to explore the performance limits of the systems. Literature Search: Perform detailed literature reviews on the latest advancements and research in quench and cable physics, and to inform our modeling and analysis efforts. Problem Solving: Apply a strong, first-principles approach to tackle novel and challenging R&D problems, collaborating with the team to find innovative solutions. Analyze and interpret experimental data of superconducting magnet tests Run computational coupled electromagnetic + thermal models under a range of conditions Improve and expand analysis pipelines with scripting and code development Perform statistical and meta-analyses of magnet test and simulation data sets Explore numerical sensitivities of high-performance numerical models Participate in highly collaborative team discussions, give presentations to various teams, and document the outcomes What we're looking for: A strong academic background in physics, with coursework or research experience in thermal, electromagnetic, and/or wave mechanics, electrical engineering, computer science, mathematics, or other related STEM fields Proficiency in 1D and 2D modeling, using tools such as COMSOL, ANSYS, MATLAB, Python, or similar software Exposure to advanced electromagnetism coursework and/or lab/industry experience Exposure and interest in numerical algorithms for physical problems Exposure to modern statistical analysis tools and methods (e.g, normality analysis, correlation analysis, uncertainty analysis), with bonus points for time series analysis methods Exposure to instrumentation and sensor science (e.g., voltage, current, magnetic field, temperature, and other sensor types) Interest or experience in numerical simulation of superconductors Skilled at generating high quality presentation materials, and giving technical talks to informed audiences Excellent problem-solving skills and the ability to think critically and analytically Strong communication skills, both written and verbal, for presenting findings and collaborating with a team Must-have Requirements: Willingness to travel or work required nights/weekends/on-call occasionally Perform activities such as typing, standing, or sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Project Controls Specialist The Project Controls Specialist is a critical role focused on ensuring projects are completed on time and within budget. This position involves developing and managing project controls, including scheduling cost control and risk management. The Project Controls Specialist will work directly with the technical project managers, Engineers and stakeholders to provide guidance to project teams, analyze Project Performance, and ensure adherence to established processes and standards. This position will also support upcoming Company projects that may support the whole portfolio of the company.What you'll do: Planning & Scheduling ➢ Develop and maintain comprehensive project schedules using scheduling software (e.g., Primavera P6, Microsoft Project) to outline tasks, durations, and dependencies ➢ Collaborate with Technical project managers, engineers, supply chain, production and other stakeholders to gather project requirements and establish WBS, activities and set duration with realistic logic ties ➢ Analyze project scope, objectives, and constraints to identify critical path activities and potential risks ➢ Conduct schedule analysis, including critical path analysis, float analysis, and "what-if" scenarios, to identify potential delays and recommend mitigation strategies Cost Controls ➢ Establish and maintain project cost baselines, budgets and forecasts ➢ Tracking project costs against the budget, identifying cost overruns, and implementing cost control measures ➢ Implement and manage earned value management (EVM) systems to measure project performance Risk Management ➢ Develop and maintain risk registers ➢ Monitor and track the effectiveness of risk mitigation actions ➢ Perform quantitative risk analysis (e.g. Montecarlo simulations) to assess schedule and cost contingencies Performance reporting ➢ Preparing regular project status reports, including earned value metrics, schedule performance, cost forecasts, and other key performance indicators ➢ Communicating project status and issues to project managers, stakeholders, and other team members ➢ Conduct regular progress meetings with project teams to review schedule updates, address concerns, and resolve conflicts ➢ Generate reports and Dashboards to communicate schedule status, performance metrics, and cost forecasts to project stakeholders Process improvement ➢ Continuously improve Scheduling & Cost processes and methodologies to enhance project efficiency and effectiveness ➢ Experience in time impact analysis to help the stakeholders understand the time impact of any possible risk that will yield into the proper decision ➢ Experience in resource allocation, equipment availability, and manpower requirements into project schedules What we're looking for: Relevant degree in engineering, construction management, or a related field 3-5 years of experience in Scheduling management & Cost Control for complex projects & programs Hands-on experience as a project controller in infrastructure capital projects, aerospace, manufacturing, Oil & gas or other complex projects Strong understanding of project management principles and methodologies Proficiency in scheduling software: (e.g., Primavera P6, Microsoft Project) , other scheduling tools will be a plus Experience with cost management and financial analysis Excellent analytical and problem-solving skills Strong communication and interpersonal skills Attention to detail and organizational skills Ability to work independently and as part of a team Experience with earned value management (EVM) Must-have Requirements: Willingness to travel when required or work required nights/weekends/on-call Perform activities such as typing, stooping or sitting for extended periods of time Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics #LI-hybrid 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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Public Policy Intern This position will report to the Public Policy Specialist and help research and draft relevant public policies to support Commonwealth Fusion Systems commercial growth. This position will support the global policy and public affairs team as well as the broader global affairs team. Program Details: 12-16 week internship program 40-50 hours per week with set hourly salary based on year in school Opportunity for this position is in Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing Specific project assignments and required technical skillset will vary based on the team's existing need. Opportunities available for currently enrolled college students in all levels of schooling from bachelor's degree to PhD Interns must be authorized to work in the United States for any employer What you'll do: Provide research and writing support for the drafting of relevant policies aimed at facilitating commercial fusion energy development and deployment Provide background research on international energy policy and politics and legal and regulatory frameworks to inform commercial fusion policies Provide background research on state and federal energy policies that could be relevant for commercial fusion including economic and regulatory matters Participate in broader team policy strategy discussions surrounding government relations, business development, and regulatory matters Support government delegation visits and community relations events What we're looking for: Graduate student with a degree in public policy, public affairs, international relations Strong communication skills Strong writer and policy researcher Ability to work across multiple projects and with tight deadlines Ability to read legislative language and regulatory documents Prior experience working on energy policy issues Passion for public policy/government affairs Think tank experience or government experience Must-have requirements: Willingness to travel or work required nights/weekends/on-call occasionally Perform activities such as typing, standing, or sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics $23 - $35 an hour Rates are aligned to your current year in school, ensuring equitable and consistent pay across our intern program. For BS interns, the hourly rate is $23-$29For MS/PhD interns, the rate is $32-$35 Benefits included for full-time interns:• 40 hours of sick time• Health, dental, and vision insurance• 401(k) with employer matching (must be 21 years of age to enroll)• Professional growth opportunities• Team-building activities #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Scientist - Scenarios and Integrated Modeling Scientist - Scenarios and Integrated Modeling will develop plasma physics scenarios for SPARC and ARC based on comprehensive integrated simulation and modeling of the core and edge plasma. Will coordinate with a multi-institutional team of plasma physics experts to develop and improve an integrated modeling toolset, and to employ that toolset for experimental planning and analysis on SPARC. Commonwealth Fusion Systems is assembling the high-field SPARC tokamak, which aims to be the first magnetic fusion device to achieve net fusion energy, and is predicted to be able to achieve high gain and fusion power up to 140MW. In parallel CFS is designing and optimizing the ARC fusion power plant, the first of which will be built in Virginia in the early 2030s. To achieve SPARC's goals and validate the physics understanding necessary for optimizing ARC, we plan to develop and continuously improve a comprehensive predictive toolchain, including all physics capabilities needed to evaluate plasma scenario performance and robustness. The person in this role will coordinate and contribute to the development and testing of this toolchain, and its use in planning and executing experiments on SPARC, as well as in development and optimization of future power plants. The person in this role will also play a key role in defining plasma operation goals, identify optimal operation scenarios for each goal, and participate directly in execution and analysis of SPARC operations.What you'll do: Refine, optimize, and validate a comprehensive integrated modeling toolset capable of predicting plasma performance and dynamics ➢ Toolset will include models of: core turbulent and neoclassical transport, H-mode pedestal and L-mode edge, coupling to boundary, ICRH heating, energetic particle physics, MHD stability, and impurity transport ➢ Toolset will include very rapid execution workflows appropriate for control, rapid execution workflows appropriate for experiment planning and optimization, as well as higher fidelity models for offline analysis and deeper exploration of critical physics Work closely with a multi-institutional team of experts to incorporate state-of-the-art physics capabilities, and validate models Employ integrated modeling tools to plan and execute plasma pulses to achieve key goals including net fusion power on SPARC, and continuously improve toolset as new data becomes available Identify, execute, and continuously improve operational scenario for achieving SPARC goals Work closely with physics, diagnostics, operations, plasma control, and software teams to design and execute plasma scenarios on SPARC Contribute to physics design and optimization of ARC What we're looking for: PhD in plasma physics or a closely related discipline Minimum 2 years post-PhD experience in magnetic fusion Significant experience with fusion plasma simulation and modeling software Significant experience in planning, executing, and/or analyzing fusion experiments Expertise in magnetic fusion experiment and simulation Strong insight on physics issues associated with integration of regions (core, edge, boundary) and physics (transport, MHD, heating, plasma material interaction..) in magnetic fusion systems Strong teamwork skills Ability to communicate ideas and results clearly Results focused with understanding of the fusion goal Ability to think clearly and perform well under pressure Bonus points for: 5+ years post-PhD experience, including hands-on experience planning and executing magnetic fusion experiments, and experience using and developing fusion simulation codes Fusion experiment planning and control room experience Familiarity with tokamak simulation tools including core transport models, pedestal/edge models, boundary models Experience with plasma transport codes such as TRANSP, IPS-FASTRAN, ASTRA, JINTRAC, TGYRO. Familiarity with ICRF physics and operation Familiarity with MHD physics, and impact of non-axisymmetric fields Familiarity with tokamak plasma breakdown, rampup and rampdown Experience developing fusion simulation codes Experience integrating simulation tools into a robust toolchain Familiarity with Python, C++, Fortran, and git version control Experience with broad based fusion collaborations, ideally including international collaborations Must-have Requirements: Perform extended activities such as typing, standing, sitting, etc. Willingness to travel or work required nights/weekends/on-call regularly Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics #LI-Hybrid 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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Production Welder This individual is responsible for performing manufacturing in-house welding work for cutting edge high-field superconducting magnets. Hours: 6:00 pm - 6:00 am Work Sat, Sun, Mon nights Rate of pay: $30 - $41 per hour + 30% differential What you'll do: Weld and inspect large metallic structures and tooling within specified timelines and budgets Set up welding processes as per specifications, incl. determining the correct equipment to use and methods based on the requirements Read and analyze drawings and take detailed measurements to plan the project layout Cut and join material Perform hand welding or semi-automated welding. Utilize advanced forms of welding when needed. Weld components in vertical, flat, and overhead positions Provide manufacturability feedback to design engineers for weld geometries and material selection Perform welding equipment qualification trials Troubleshoot and resolve manufacturing discrepancies with a focus on continuous improvement Follow safety procedures at all times What we're looking for: Documented Training or Certification in most of the following: Blueprint Reading and Fabrication, Gas Metal Arc Welding (GMAW), Gas Tungsten Arc Welding (GTAW), Advanced Shielded Metal Arc Welding (SMAW) 5+ years' experience as a welder on large structural systems and tooling Experience with large metallic structures and manufacturing processes related to welding Experience in producing welds to pass industry standard requirements Experience welding stainless steel Experience using GTAW process to weld copper Bonus points for: Experience in welding for pressure vessel, aerospace, and/or nuclear applications GTAW, GMAW, SMAW, Electron Beam and Laser Welding Experience Experience operating mechanized or automated welding equipment The ability to read and interpret technical drawings and documentation Excellent attention to detail Knowledge of various forms of welding equipment and procedures The capacity to work unsupervised A detailed understanding of mathematical and numerical data and calculations Project and time management Must-have requirements: Ability to lift up to 50 lbs regularly Perform activities such as stooping, typing, standing, and sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics Willingness to travel occasionally or do required nights/weekends/on-call $30 - $41 an hour 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• 12.5 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 #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Project Management Intern We are looking for talented interns to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles. Program Details: 12-16 week internship program 40-50 hours per week with set hourly salary based on year in school Opportunities onsite in Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing Specific project assignments and required technical skillset will vary based on the team's existing need Opportunities available for currently enrolled college students in all levels of schooling from bachelor's degree to PhD Interns must be authorized to work in the United States for any employer What you'll do: Expedite building tools, templates and processes within the Project Management Office Create standard templates for project reporting mechanisms Project management for small scale business initiatives within the PMO Map business process flows and ideate better ways of working What we're looking for: Pursuing a degree in Industrial Engineering, Mechanical Engineering, Information Systems or other Engineering Project Management experience highly desirable Google Workspace, MS Project, JIRA and Confluence Strong communication skills Self starter Good time management and organizational skills Must-have Requirements: Willingness to travel or work required nights/weekends/on-call occasionally Perform activities such as typing, standing, or sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Electrical Commissioning Test Engineer The Senior Electrical Commissioning Test Engineer is responsible for the initiation, development, revision, and execution of Electrical Testing Procedures within the 9 Station SASY process.What you'll do: Execute a broad range of simple to complex field testing particular to the SPARC device during the assembly process with an electrical discipline focus Create detailed Test Activity concepts / roadmaps in partnership with project managers Develop Test Procedures with engineering groups and provide internal training & knowledge transfer to the test team for the execution phase Provide guidance and align activities with overall company goals to optimize test procedure execution through iteration and incremental improvements Identify, track, and resolve issues within the appropriate workflows Complete and review documentation including Factory and Site Acceptance testing both at the vendor and internal R&D / production phases Provide technical governance & oversight of specialized testing activities performed by internal teams or third parties Ensure all activities comply with CFS standards, regulatory codes, industry best practices, and safety requirements Collaborate with EHSS and engineering teams on risk assessments and root cause analyses Represent the Commissioning Team at vendor FATs, conferences, and cross-functional engagement What we're looking for: BS in Electrical Engineering or related field 10+ Years Commissioning (similar and cross functional experience in operations or maintenance is acceptable) High proficiency MS Office, BlueBeam or Acrobat, and 3D modeling programs Bonus points for: Mechanical, Electrical, and Instrumentation Commissioning Experience OSHA 10 NFPA 70E NCCER Mechanical Technician Must-have requirements: Ability to occasionally lift up to 50 lbs Perform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics Willingness to occasionally travel to witness FAT at vendor locations worldwide. May work second/third shifts and/or weekends as dictated by project needs $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• 12.5 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 #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.

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 working with policymakers and suppliers to build the energy industry of the future. 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. 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 Systems Engineering Intern We are looking for talented technical interns to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.Program Details: 12-16 week internship program 40-50 hours per week with set hourly salary based on year in school Opportunity available at our Devens, MA location. If an intern is going to be on site, you will be responsible for your own transportation and housing Specific project assignments and required technical skillset will vary based on the team's existing need. Opportunities available for currently enrolled college students in all levels of schooling from bachelor's degree to PhD Interns must be authorized to work in the United States for any employer What you'll do: Collaborate with SPARC Systems Engineers and relevant stakeholders to drive integrated verification & validation planning through integrated commissioning and early operations Establish the structure of operational budgets and performance limits of key cross-functional technical areas Collaborate with Systems Engineering Leadership to support enterprise level architecture planning and trade offs to evaluate growth of the Systems Engineering function What we're looking for: Pursuing a Master degree in Systems Engineering or Engineering Management Understanding of and experience in complex system delivery lifecycles Experience in highly cross-functional complex systems engineering Strong communication skills and a willingness to learn Must work well in a team Highly self-motivated and driven to execute quickly with excellent troubleshooting/ problem-solving skills Optional: Experience in enterprise / organizational growth, strategy, implementation Optional: experience in relevant Systems Engineering tools such as SysML, IBM DOORS, custom software tools Must-have Requirements: Willingness to travel or work required nights/weekends/on-call occasionally Perform activities such as typing, standing, or sitting for extended periods of time Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics $23 - $35 an hour Rates are aligned to your current year in school, ensuring equitable and consistent pay across our intern program. For BS interns, the hourly rate is $23-$29For MS/PhD interns, the rate is $32-$35 Benefits included for full-time interns:• 40 hours of sick time• Health, dental, and vision insurance• 401(k) with employer matching (must be 21 years of age to enroll)• Professional growth opportunities• Team-building activities #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.