Jobs at Commonwealth Fusion Systems

Commonwealth Fusion Systems is seeking an entry-level Molten Salt Engineer to support experimental testing operations. The role involves executing standard operating procedures, conducting materials testing, and maintaining quality controls, with potential expansion into experimental design and project leadership. Candidates should have a background in chemistry, chemical engineering, or a related discipline.

Fiber Optic Specialist on the third shift at Commonwealth Fusion Systems in Devens, Massachusetts. Responsibilities include fiber splicing, testing, and integration into complex designs, ensuring functional operation and preventative maintenance of equipment, and collaborating with other departments.

Commonwealth Fusion Systems is seeking a Senior Mechanical Engineer for their Cable Magnets team. This role involves owning hardware from concept to delivery, performing thermal, structural, and electromagnetic analysis, and developing design documentation. The engineer will also support procurement and production teams.

Commonwealth Fusion Systems is seeking a Director, Corporate FP&A to oversee enterprise-level financial planning processes. This role will drive financial planning cycles, establish standards and governance for planning, and evaluate process effectiveness for continuous improvement.

Commonwealth Fusion Systems is seeking an NDT Manager – Responsible Level III to lead their NDT Operations. This role is responsible for technical leadership, people management, and scaling NDT capabilities for fusion power plants, overseeing inspections across manufacturing, construction, and vendor sites.

Commonwealth Fusion Systems is seeking a Senior Manager, Mechanical Engineering to lead the design and delivery of the ARC vacuum vessel. This role involves managing a team of mechanical engineers through the full design lifecycle, from concept to hardware procurement, for a critical component of the world's first fusion power plant.

Commonwealth Fusion Systems is seeking a Principal RF Systems Engineer to play a pivotal role in building the most powerful RF plant in the world for the SPARC project. This influential architect will drive high-level technical direction and be hands-on in integrating high-power electronics, solid-state amplification, and complex transmission networks to achieve net energy.

Commonwealth Fusion Systems is seeking an Operations Coordinator - Assembly in Devens, Massachusetts. This role provides administrative and operational support to the Field Assembly organization, focusing on purchasing production consumables, managing clean room materials, coordinating new-hire onboarding, and leading clean room training.

Commonwealth Fusion Systems is seeking a Director, Manufacturing, Operations & Supply Chain Finance to lead their operations finance team. This strategic role will provide financial leadership across manufacturing sites, focusing on planning, reporting, inventory management, capital investment, and continuous improvement initiatives.

Commonwealth Fusion Systems is seeking an experienced Assistant General Counsel – Commercial to lead their commercial legal efforts. This role involves hands-on work with complex transactions and building legal infrastructure for commercial growth, with the expectation of building and leading a team.

Commonwealth Fusion Systems is seeking a Fiber Optic Specialist for their first shift in Devens, Massachusetts. This role involves assisting R&D and production staff with optical fiber work, including splicing, testing, and integration into complex designs, while minimizing damage and attenuation. The specialist will also be responsible for equipment maintenance and continuous improvement within a multidisciplinary team.

Electrical Engineer at Commonwealth Fusion Systems responsible for coordinating electrical design projects and ensuring high-quality design releases. This role involves executing installation and testing of complex high power electrical systems for SPARC, developing technical requirements for vendor equipment, and leading electrical work package releases.

Commonwealth Fusion Systems is seeking a Contract Supply Chain Coordinator in Ayer, Massachusetts. This role focuses on warehousing and material management, including processing shipments, managing inventory, maintaining warehouse conditions, and responding to internal inquiries.

Commonwealth Fusion Systems is seeking a Supply Chain Operations Coordinator for their first shift. This role involves warehouse and materials management, including processing shipments, receiving, and inventory control. The ideal candidate will have strong communication and organizational skills.

Commonwealth Fusion Systems is seeking a Senior Systems Engineer with a mechanical background to implement systems engineering processes for SPARC & ARC tokamaks. This cross-disciplinary role involves requirements development, interface definition, risk assessment, and test planning throughout the development lifecycle.

Commonwealth Fusion Systems is seeking a Staff Supplier Integration Manager - ARC to develop and execute global supply chain strategies. This role involves close collaboration with design, R&D, and business development teams to improve product cost and other key metrics through supply chain integration and new technology research.

Commonwealth Fusion Systems is seeking a Staff Electrical Engineer to lead electrical hardware design for R&D and processing equipment. This role involves end-to-end electrical design, focusing on power distribution, safety, signal integrity, instrumentation, and control panel architecture, with a need for working knowledge of PLCs and industrial automation.

Commonwealth Fusion Systems is seeking a Staff Modeling and Simulation Engineer to join their design team. This role involves leading advanced simulations, including Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD), to validate complex hardware systems across thermal, structural, fluid flow, and chemical regimes.

Commonwealth Fusion Systems is seeking a Senior R&D Test Engineer specializing in Fluid Systems. This role involves developing novel fluid systems for R&D test stands, with a focus on supporting magnet testing, and requires strong mechanical and chemical engineering fundamentals.

Lead Production Technician at Commonwealth Fusion Systems responsible for leading a team building superconducting magnets and assemblies. This role involves improving production tasks, managing schedules, and ensuring quality for mechanical, electrical, magnetic, cryogenic, pressure, vacuum, and pneumatic systems.

Commonwealth Fusion Systems is seeking a Senior Manufacturing Engineer for their Devens, Massachusetts location. This role focuses on designing, implementing, and optimizing manufacturing processes to improve productivity, efficiency, and quality, with overall accountability for the "magnet owner" shift.

Manufacturing Engineer at Commonwealth Fusion Systems responsible for transitioning new products from development to full-scale production. This role involves collaborating with cross-functional teams, developing and qualifying manufacturing processes, and optimizing production layouts and tooling.

Commonwealth Fusion Systems is seeking a Lead Technician, Assembly Testing in Devens, Massachusetts. This role involves leading a small team of technicians in executing mechanical testing procedures, including pneumatic pressure proofing and leak detection. The Lead Technician will also provide guidance and instruction to the team, identify potential issues, and contribute to work and quality management systems.

Commonwealth Fusion Systems is seeking a Senior Algorithms and Simulation Software Engineer to design and implement state estimation and control algorithms, along with models and simulation frameworks. This role involves developing production-ready code for mission-critical real-time systems and integrating software into various testbeds.

Commonwealth Fusion Systems is seeking a Senior Manufacturing Engineer for their Devens, Massachusetts location. This role focuses on designing, implementing, and optimizing manufacturing processes to improve productivity, efficiency, and quality. The engineer will be responsible for real-time decision-making, process documentation, and collaboration with cross-functional teams.

Commonwealth Fusion Systems is seeking a Senior Data and Operations Software Engineer to join their Software Engineering team. This backend role involves developing distributed systems and APIs for data acquisition, access, and processing, primarily using Golang and Python.

Senior Embedded Software Engineer at Commonwealth Fusion Systems responsible for designing, implementing, and verifying software and controls for R&D equipment and complex machinery. This role involves developing control software across multiple platforms, verifying embedded software with hardware-in-the-loop testbeds, and improving software tooling.

Commonwealth Fusion Systems is seeking a Senior Control Software Engineer to design, implement, and verify software and controls for R&D equipment and complex machinery. This role involves hands-on development of production-ready code for real-time systems, collecting functional requirements, and integrating software into various testbeds.

Commonwealth Fusion Systems is seeking a Senior Manufacturing Engineer for their third shift. This role involves designing, implementing, and optimizing manufacturing processes to improve productivity, efficiency, and quality, with overall accountability for the shift. The position requires real-time decision-making and collaboration with design, production, quality assurance, and supply chain teams.

Commonwealth Fusion Systems is seeking a Contract Supply Chain Operations Coordinator for their Devens, Massachusetts location. This role focuses on warehouse and materials management, including shipping, receiving, and inventory. Responsibilities include maintaining the loading dock, operating material handling equipment, and performing inventory counts.

Commonwealth Fusion Systems is seeking a Staff Computational Materials Scientist to join their Materials and Processing Department. This role involves expertise in process-structure-properties relationships, physics-informed modeling, and materials in extreme environments to support the development of fusion power plants.

Commonwealth Fusion Systems is seeking a Senior Mechanical Engineer for Remote Maintenance to design the Remote Maintenance System for ARC, the world's first commercial fusion power plant. This role involves developing maintenance schemes, designing remote handling equipment (RHE), and collaborating with other engineering teams to ensure a maintainable power plant design.

Manufacturing Engineer on the second shift at Commonwealth Fusion Systems in Somerville, Massachusetts. This role involves analyzing and improving manufacturing processes to reduce costs, increase efficiency, and ensure product quality, with close collaboration with design engineers, production staff, quality assurance, and supply chain teams.

Commonwealth Fusion Systems is seeking a Senior RF Test Engineer to validate and test electronics and control systems for their SPARC tokamak. This hands-on role involves board-level bring-up, operating high-power RF transmitters, and integrating hardware with software controls to ensure the RF plant's successful operation.

Commonwealth Fusion Systems is seeking a Senior Fuel Cycle and Blanket Mechanical Engineer to join their growing team. This role will focus on the design and delivery of molten salt process equipment, including ASME tanks, heat exchangers, piping systems, and gas processing equipment, to advance fusion energy development.

Commonwealth Fusion Systems is seeking a Fiber Optic Specialist for their second shift, weekend team. This role involves assisting R&D and production staff with optical fiber work, including splicing and testing, to ensure functional operation and minimize damage. The specialist will also perform preventative maintenance and contribute to continuous improvement within a multidisciplinary team.

Commonwealth Fusion Systems is seeking an Executive Operations Partner to support C-Suite executives within their People Operations team. This role involves providing proactive administrative support, complex calendar management, travel coordination, and serving as a trusted representative for executives.

Commonwealth Fusion Systems is seeking a Lead Piping Engineer to oversee all piping engineering functions, including pipe stress analysis, standards, material specifications, and pipe support design. The role involves performing these activities directly or leading a team and contractors, with a focus on establishing methodologies, performing analyses using industry-standard software, and designing pipe support systems.

Commonwealth Fusion Systems is seeking a Manager, Process Engineering - Assembly in Devens, Massachusetts. This role leads a team of 8-15 engineers responsible for the development and release of engineering work instructions for the SPARC Tokamak build, requiring close collaboration with field and design engineering teams.

RF Electronics Engineer at Commonwealth Fusion Systems in Devens, Massachusetts. This role involves validating and testing electronics and control systems for high-power RF transmitters used to heat plasma for fusion reactions. Responsibilities include board-level bring-up, operating RF transmitters, and integrating hardware with software controls.

Commonwealth Fusion Systems is seeking a Lead Assembly Technician for their Third Shift team in Devens, Massachusetts. This role involves overseeing and organizing technician teams to conduct assembly activities for the SPARC Tokamak, including handling and integrating large electromagnetic coils, vacuum vessels, and other components.

Commonwealth Fusion Systems is seeking a Director, Supply Chain to lead their direct procurement, planning, and supplier quality team. This role involves strategic sourcing, tactical procurement, supplier management, and supply chain project management for projects like SPARC and ARC.

Commonwealth Fusion Systems is seeking a Senior Manager, Accounting Operations to lead and optimize operational accounting functions. This role involves developing and scaling a team, acting as a liaison with other departments, and implementing best practices and systems to support company growth.

Commonwealth Fusion Systems is seeking a Senior Process Engineer to design, scale up, commission, and operate process systems for fusion power plants. The role requires deep chemical engineering fundamentals and experience in large industrial facilities, with exposure to cryogenic, power generation, molten salt, and utility systems.

Commonwealth Fusion Systems is hiring a Staff Multiphysics Modeler in Devens, Massachusetts. This role involves developing fuel cycle models for the ARC fusion power plant by integrating multiphysics simulations with industrial process models. The ideal candidate is an expert in heat and mass transport modeling and enjoys building tools for others.

Commonwealth Fusion Systems is seeking a Supply Chain Operations Supervisor to manage warehouse and materials handling. This role involves overseeing daily operations, including material movement with forklifts and cranes, and ensuring safe, organized storage of goods in a fast-paced research and manufacturing environment.

Staff Mechanical Engineer at Commonwealth Fusion Systems in Milpitas, California. This role involves end-to-end design, integration, and implementation of advanced thermal vacuum equipment and R&D machinery. Responsibilities include leading system design, defining requirements, and standardizing best practices using semiconductor standards.

Commonwealth Fusion Systems is seeking a Staff Materials Engineer with expertise in metallurgical engineering. This role supports design, supply chain, and manufacturing by selecting, defining, validating, and developing materials for fusion power plants, specifically SPARC and ARC. The work involves addressing unique materials challenges related to fusion environments.

Commonwealth Fusion Systems is seeking a Mechanical Engineer for their Cable Magnets team. This role involves owning hardware from concept to delivery, including design, thermal, structural, and electromagnetic analysis, documentation, and supporting manufacturing and assembly.

Commonwealth Fusion Systems is seeking a Senior Technical Project Manager to drive complex engineering projects within SPARC, their compact fusion machine. The role involves developing comprehensive plans for engineering, procurement, and construction of highly engineered process systems, managing systems through final design, and ensuring deliverables meet strict budget and timeline parameters.

Commonwealth Fusion Systems is seeking a Senior Mechanical Engineer for their Assembly Team in Devens, Massachusetts. This role involves designing, developing, and managing the fabrication of unique tooling for the SPARC tokamak device assembly. The engineer will collaborate with system teams to create efficient, cost-effective, and safe solutions for manipulating and integrating tokamak components.

Commonwealth Fusion Systems is seeking a Quality Engineer for night and weekend shifts. This role involves overseeing manufacturing process quality for HTS Magnet production and the SPARC Project, taking ownership of process stability, defect resolution, and leading root cause investigations.

Commonwealth Fusion Systems is seeking a Senior Metrology Engineer to join their team in Milpitas, California. This role involves selecting, developing, and maintaining measurement systems and metrology equipment, as well as creating SOPs and workflows for sample measurement and providing training. The engineer will also develop and utilize data management systems like LIMS and MES.

Commonwealth Fusion Systems is seeking a Senior Test Planning Engineer - Assembly to plan, draft, and gain approval for SPARC Assembly Test Products. This role involves developing proficiency in specialized test methods, writing technical procedures, and performing project risk analysis to balance schedule gains with safety and quality.

Commonwealth Fusion Systems is seeking a Senior R&D Electromagnetic Analysis Engineer to perform electromagnetic analysis of superconducting magnets using finite element and other methods. This role involves modeling non-linear, anisotropic behavior of high-temperature superconductors and incorporating multi-physics system behavior into models, as well as validating simulations against experimental data.

Control Software Engineer at Commonwealth Fusion Systems responsible for designing, implementing, and verifying software and controls for R&D equipment and complex machinery. This role involves writing production-ready code for real-time systems, collecting functional requirements, and integrating software into testbeds and production tools.

Field Mechanical Engineer - Assembly at Commonwealth Fusion Systems. Responsible for co-owning and being the expert in the assembly sequence of a workstation, initially focused on Toroidal Field Coil (TF) semicircle sub-assemblies. This role involves defining new work scope, solving assembly issues, procuring tools and fixtures, and providing design feedback with a focus on manufacturing and assembly.