Commonwealth Fusion Systems

QA Engineer

• 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

Senior Electrical Commissioning and Test Engineer

Operations

• Operate, maintain, and test equipment, components, and systems associated with plant operations
• Troubleshoot assigned systems and equipment, including cooling water, compressed air, HVAC, liquid nitrogen, cryogenic plant, and electrical distribution
• Coordinate, oversee, and/or perform field work activities, ensuring safe and efficient execution
• Operate plant equipment in compliance with established safety protocols
• Perform switching and tagging (LOTO) to support site maintenance and operations
• Develop new operating procedures for systems being designed, built, and commissioned
• Create maintenance plans for new systems to ensure long-term reliability
• Support training efforts to prepare operations staff for safe and effective plant operations

Operations Engineer – SPARC

• Execute a broad range of simple to complex field testing particular to the SPARC device during the assembly process with an instrumentation & control 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 engagements

Senior I&C Commissioning and Test Engineer

Supply Chain

• Train, support, develop and coach the members of the team
• Define, assign and monitor objectives
• Have management responsibility for meeting cost, quality and delivery objectives
• In close coordination with the engineering leads, plan and assign work, manage the workload and define priorities as required
• Act as an escalation point to solve issues
• Ensure process adherence for strategic sourcing, purchase orders placement/management and supplier quality
• Report on project status, risks and issues to the supply chain and the systems leadership teams
• Lead change management and process definition/improvement initiatives
• Recruit new team members as additional headcount is approved
• Elaborate and execute project procurement or commodity strategies
• Coordinate planning and scheduling activities with the assigned planners in a matrixed organization (functionally reporting to the head of Supply Planning)
• Coordinate supplier development and reliability activities with the assigned supplier development engineers in a matrixed organization
• Drive sourcing projects, coordinating cross-functionally
• Negotiate short and long-term agreements for parts, subassemblies, finished goods, equipment, and/or services
• Create and manage purchase orders
• Monitor suppliers throughout the execution of the contracts
• Support cost savings initiatives, lead time improvement projects, and quality improvement projects
• Visit suppliers as necessary to conduct business reviews or check on project milestones
• Negotiate internally and externally at all levels or with people of influence frequently

Supply Chain Manager – Process Systems

Mechanical Engineer

• Support the diagnostic systems in the design of components by applying multi-disciplinary engineering and design skills to a variety of diagnostic systems
• Contribute to a strong safety culture while helping to commission and operate SPARC diagnostics
• Grow expertise that helps CFS build a core competency in fusion measurement tools that can deliver future tokamaks optimized for power production
• Project areas can range over multiple topics including design, analysis, and testing of large structures, packaging and assembly constrained piping and wiring components, radiation shielding, support and interfacing structures for scientific measurement tools
• Detailed component design and assembly layout in CAD; development of assembly and installation procedures for large assemblies
• Rapid prototyping and design of benchtop and rackmount parts that interface custom SPARC components to COTS equipment
• Structural, civil, and thermal analysis; collaboration with other CFS teams and external vendors to verify design functionality and manufacturability
• Developing and executing benchtop tests of prototypes; supporting resolution of technical issues that arise during manufacturing of SPARC diagnostic equipment
• Providing hands on support for diagnostic assembly and calibration, providing feedback on the impact of field changes during installation

Senior Mechanical Engineer, Diagnostics

Engineer

• Support installation and process qualification of new equipment and oversee continuous improvement activities
• Work within a multi-disciplinary and proven team of top scientists and engineers
• Own the process development and qualifications of key process equipment
• Develop and conduct design of experiments for process development and characterization
• Proactively analyze data to answer key questions and drive process efficiency and engineering improvements
• Develop and maintain data collection processes that support engineering and production workflows
• Trace and document data requirements, sources, and flows; contribute to the development of data models
• Apply Lean Six Sigma or similar methodologies to improve production processes and reduce variability
• Use statistical methods to analyze complex datasets, identify patterns, and support data-driven experimentation and decision making
• Work with advanced vacuum systems, thermal processes, and wet processes and transform complex datasets into actionable insights
• Work closely with cross-functional teams to drive process improvements through thoughtful, well-communicated analysis
• Ensure compliance with applicable Export Control Laws when necessary

Senior Process Engineer

• Product owner responsible for design, production support, and assembly of structural components and insulation in HTS magnet systems
• Work closely with Production, Assembly, and Procurement teams to ensure components meet requirements and are delivered on-time
• Develop design and analysis documentation, technical specifications, and assembly procedures
• Perform structural and thermal calculations (hand calculations to FEA)
• Drive production drawing releases and revisions to meet manufacturing and assembly schedules
• Collaborate with Quality, Manufacturing, Assembly, Commissioning, and Procurement teams on requirements and documentation
• Rapidly design, test, and qualify prototypes
• Prepare reports and presentations
• Exhibit self-motivation, excellent problem-solving skills, and preference for simplicity over complexity

Senior Mechanical Engineer, TF Structures

• Develop machine and process concepts in collaboration with Manufacturing and Mechanical Engineering peers
• Create robust control system architectures supporting robotics, PLCs, safety devices, HMIs, servo drives, and more
• Work from initial design through commissioning, process fine-tuning, and validation to ensure reliable system operation
• Specify, select, and program robotics systems for material handling, welding, material removal, assembly, inspection, and subtractive manufacturing
• Write and debug PLC structured text; integrate PLCs with conveyors, robots, machine vision, and 3rd party equipment
• Implement ANSI/RIA15.06/OSHA-compliant safety systems for safeguarding robots, gantries, conveyors, and high-volume equipment
• Design, modify, and approve electrical schematics for manufacturing and test equipment compliant with NFPA79/NEC/UL508A
• Generate simple, aesthetic HMI screens that provide sufficient troubleshooting feedback
• Introduce automated processes into production and train Maintenance and Production teams for support
• Create machine interactions with plantwide SCADA to communicate product acceptability, machine status, and process variables
• Debug and optimize automated processes to maximize cycle time, availability, and yield
• Characterize and validate automated processes using data-driven approaches and statistical tests (GRR, Cpk, etc.)
• Create data management and tracking communications network architecture and interface with cross-functional teams for traceability control implementation

Senior Controls Engineer

• Develop and qualify manufacturing techniques, processes, flow maps, and work instructions for superconducting magnet components and assemblies
• Supporting Quality Activities in Manufacturing
• Development of high-field magnet insulation components and joints
• Design tooling improvements, document
• CAD Design work, Creative problem solving, Report writing, Data collection, and hands on assembly of test pieces.
• Develop assembly methods and tools to perform specific tasks within the larger goal of SPARC assembly.
• Work with design and equipment engineers to develop custom automation equipment
• Multiscale structural computational modeling of high-field superconducting magnets
• Support HTS R&D team projects
• Systems Engineering - Superconducting Magnets

Intern – Mechanical/Manufacturing Engineer

• Support engineers in materials selection and characterization, process development, failure analysis, and physics-based model development (Materials Engineer Intern)
• Work cross-functionally with tokamak design teams to support system design and validation
• Example projects: development and characterization of complex joining processes for plasma diagnostics; testing and validation of ceramic coatings; characterization of titanium alloys at cryogenic temperatures
• Support day-to-day operations and test development work in the Materials Test Lab, including sample preparation, test execution, data collection, and analysis (Materials Test Intern)
• Work alongside engineers and technicians to enable material performance evaluation for critical fusion components
• Contribute to custom test development projects (e.g., design/build of high-temperature outgassing test stand, commissioning and calibration of new test equipment, improving lab workflows, mechanical testing of composite materials using Instron test frames)
• Participate in a 12-16 week internship program at 40-50 hours per week

Intern – Materials Engineer / Materials Test

Security Engineer

• 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
• Support audits, inspections, risk assessments, and other EHS-related projects
• Collaborate with technical teams to identify and mitigate industrial hazards
• Participate in project-specific assignments and apply technical skillsets based on team needs

Intern – Environmental, Health, Safety and Security

Electrical Engineer

• Mechanical installation
• Vendor visits to track progress (OMNI)
• Component level testing and documentation at Somerville location
• Work on specific project assignments with required technical skillset that vary by team need
• Participate in a 12-16 week internship, 40-50 hours per week with set hourly salary based on year in school
• Required to work on-site at Devens, MA and Somerville, MA locations

Intern – Electrical Engineer

• Lead and cross-coordinate with stakeholders on design-build, test, and/or analysis projects to meet requirements and system objectives
• Develop test plans for cryogenics equipment and subsystems
• Identify, purchase, and install hardware for test configurations
• Run testing of industrial-scale cryogenics equipment and subsystems
• Analyze data from testing industrial-scale cryogenics equipment and subsystems
• Read and develop engineering documents: process flow diagrams (PFDs), piping & instrumentation diagrams (P&IDs), test plans, test procedures
• Perform thermohydraulics analysis and develop calculations, tools, and models (Excel, 1-D thermohydraulic models, CFD/COMSOL)
• Build project-management tools, manage small budgets, and report on project milestones
• Hands-on building and testing of flow instrumentation panels, vacuum carts and headers, swagelok tubing setups, helium leak testing, oil removal bakeouts, helium purity measurement and calibration

Cryogenics Engineer Intern

Strategy

• Assist on projects
• Drive analysis and research related to project development, market analysis, and techno-economic analysis for CFS’s ARC power plants
• Collaborate with the Power Business team on ongoing projects and support execution for current needs
• Own and drive research and/or analysis projects related to Power Business team goals
• Be placed into meaningful and challenging roles as part of a 12–16 week internship program, working 40–50 hours per week

Business Strategy Intern

• Participate in initial equipment conceptual development and balance product specifications, process control requirements, layout complexity, cost, quality, and lead time limits
• Specify, select, and program robotics systems for material handling, laser welding, tig welding, mig welding, material removal, part assembly, part inspection, and subtractive manufacturing
• Write, and debug PLC structured text with an emphasis on generating code that is organized, structured, documented, maintainable, and reusable. PLC code will interact with subsystems such as conveyors, robots, machine vision, and 3rd party equipment
• Implement (ANSI/RIA15.06/OSHA compliant) control reliable safety systems for safeguarding robots, gantries, conveyors, and other high volume manufacturing equipment
• Design, modify, and approve electrical schematics for manufacturing and test equipment. (compliant with NFPA79/NEC/UL508A standards)
• Generate aesthetically simple HMI screens for complex machinery while providing sufficient feedback for troubleshooting
• Introduce automated processes into production, and train Maintenance and Production Teams to support after deployment into production
• Create machine interactions with plantwide SCADA to communicate product acceptability, machine status, and process variables
• Debug and optimize automated processes to maximize cycle time, improve availability, and yield
• Characterize and validate automated processes using a data-driven approach such as simulation, Capacity and Capability statistical test (Gage Repeatability and Reproducibility test, Cpk, etc)
• Create data management and tracking communications network architecture and interface with cross-functional teams for product, processes, and quality traceability control implementation

Controls Engineer

• Design thermal, chemical, vacuum, and electro-mechanical tools and systems for superconducting magnet materials and supporting systems
• Work with CFS (engineering, procurement, quality, manufacturing) teams and suppliers to deliver prototype and production machinery/equipment that meets design specifications
• Perform dimensional and tolerance analysis on designs and drawings to ensure they support the functional needs of the design and suitability for the intended fabrication process
• Create and modify designs (models and supporting drawings) in NX and Teamcenter. Support the engineering team by providing design, drafting and engineering releases
• Have technical depth and proven experience with ASME Y14.100 and ASME Y14.5 standards
• Design and release components and assemblies
• Assure that CAD designs and documentation comply with industry and internal CAD standards. Be part of a matrix organization as a member of the CAD Team reporting to a CAD Team Leader/Manager
• Work within a multi-disciplinary and proven team of top scientists and engineers to support our functional team onsite in Milpitas, CA where we specialize in High-temperature superconductors

CAD Design Engineer

• Manage the collection, storage, kitting, cleaning and overall coordination of parts, tools, consumables, PPE and supplies within CFS2 to support the SPARC Assembly (SASY) Team
• Interface with Engineering, Planning, Process Control, Inventory and Logistics to ensure parts and tools are available, staged, clean and kitted
• Disposition, storage, and disposal of obsolesced parts
• Develop and manage systems, processes and workflows for acquisition, aggregation and distribution of supplies, consumables, chemicals, PPE
• Oversee movement of components and assemblies within Assembly Hall/Tokamak Hall from receipt through consumption
• Partner with Supply Chain, Manufacturing, R&D Operations and stakeholders to ensure timely component delivery
• Establish and enforce operational standards for scalability and consistency
• Coordinate daily with SASY members, planning, supply chain teams, and transport logistics to meet delivery timelines
• Implement storage, kitting, cleaning and packaging systems to enhance material flow and accountability
• Champion Lean Manufacturing and 5S practices to reduce waste and enhance efficiency
• Partner with EHS to represent SASY requirements and drive compliance to standards
• Facilitate and coordinate inspection points at receipt of goods and work with Quality to resolve discrepancies

Logistics Coordinator – Assembly

• Ensure safe use of cloud services by developing cloud infrastructure security standards
• Deploy tools to monitor compliance of cloud infrastructure
• Perform ongoing assessments to monitor cloud infrastructure compliance and vulnerabilities
• Perform security assessment of new cloud infrastructure platforms
• Integrate security requirements into IT systems.
• Conduct regular vulnerability assessments and penetration testing to identify potential risks and weaknesses.
• Develop and implement effective remediation strategies for identified security gaps.
• Implement system hardening and compliance
• Implement and integrate static and dynamic code analysis tools
• Research and evaluate Cybersecurity tools and methodologies
• Collaborate with cyber and product architects to harden platforms and tool chains
• Define and enforce secure-by-default software engineering practices
• Ensure compliance documents remain up-to-date, including system policies, procedures, controls, data maps, and customer documentation. Model efficiency in your own work, and arm subject matter experts with content, tools, and direction to minimize their effort

Senior Cybersecurity Engineer

Data Engineer

• Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.
• Design, develop, and maintain robust, scalable data pipelines to support enterprise analytics and the machine learning lifecycle.
• Collaborate with stakeholders across operations, supply chain, finance, and engineering to translate business challenges into data requirements and AI-driven solutions.
• Prepare and transform complex datasets into model-ready formats for machine learning and Generative AI applications.
• Own the data lifecycle for projects, ensuring data quality, governance, and reliability from ingestion to consumption.
• Propose new technologies and methodologies to improve data infrastructure.
• Prototype and develop solutions using Generative AI and LLMs to automate workflows and extract insights from unstructured enterprise data.
• Architect data infrastructure for advanced AI applications, including RAG pipelines and vector databases.
• Research and experiment with emerging AI technologies and platforms to recommend competitive solutions.

Enterprise Cloud Data Engineer

• Primary driver for internal cybersecurity compliance and privacy at Commonwealth Fusion Systems
• Shape and uphold security and data privacy standards for cutting-edge fusion energy solutions
• Mature and maintain compliance posture across standards including ISO 27001
• Integrate security requirements into IT systems and collaborate with architects
• Develop cloud infrastructure security standards and perform security assessments of cloud platforms
• Deploy tools to monitor compliance of cloud infrastructure and conduct ongoing vulnerability assessments and penetration testing
• Implement remediation strategies, system hardening, secure baselines, and integrate static/dynamic code analysis tools
• Research and evaluate cybersecurity tools and methodologies; define secure-by-default software engineering practices
• Ensure compliance documents (policies, procedures, controls, data maps, customer documentation) remain up-to-date and support subject matter experts