Commonwealth Fusion Systems jobs
Commonwealth Fusion Systems develops fusion energy systems using high-temperature superconducting (HTS) magnets to create compact tokamak reactors.
Based in Cambridge, MA, USA. 142 open roles, checked Nov 6, 2026.
For each role, see who to message at Commonwealth Fusion Systems: the hiring manager, a teammate and the recruiter, with a LinkedIn note ready to send — 1,033 suggested contacts across these roles.
Open roles at Commonwealth Fusion Systems
Operations - Manufacturing (24)
- Manufacturing Engineer - Third Shift · Devens, MA
- Production Technician - Second Shift · Devens, MA
- Mechanical Engineer · Devens, MA
- Machinist - Contract - Weekend Shift · Devens, MA
- Production Technician Supervisor - First Shift · Devens, MA
- Senior Manufacturing Engineer - Second Shift · Devens, MA
- Fiber Optic Specialist - First Shift · Somerville, MA
- Senior Controls Engineer · Devens, MA
- Controls Engineer · Devens, MA
- Production Technician Supervisor - Second Shift · Devens, MA
- Manufacturing Engineer - Contract · Somerville, MA
- Welder - Differential Pay for Weekend & Night Shifts · Devens, MA
- Senior Equipment Engineering Project Manager · Devens, MA
- Senior Manufacturing Engineer - First Shift · Devens, MA
- Fiber Optic Specialist - First Shift · Devens, MA
- Manufacturing Engineer - First Shift · Devens, MA
- Fiber Optic Specialist - Weekend - Second Shift (Fri, Sat, Sun) · Devens, MA
- Fiber Optic Specialist - Third Shift · Devens, MA
- Lead Production Technician - Third Shift · Devens, MA
- Senior Manufacturing Engineer - Third Shift · Devens, MA
- Manufacturing Engineer - Third Shift · Somerville, MA
- Manufacturing Engineer - Second Shift · Somerville, MA
- Senior Manufacturing Engineer - Weekend Second Shift (Fri, Sat, Sun) · Devens, MA
- Senior Manufacturing Engineer - Weekend First Shift (Fri, Sat, Sun) · Devens, MA
Internships (20)
- Intern - R&D Multiphysics Simulation Intern - Spring or Summer 2027 · Somerville, MA
- Intern - Electrical/Electromechanical Engineer - Spring 2027 · Devens, MA
- Intern - Mechanical and Magnet Engineer - Spring or Summer 2027 · Devens, MA
- Intern - Structural Engineer - Summer 2027 · Devens, MA
- Intern - Fusion Fuel Systems - Spring or Summer 2027 · Devens, MA
- Intern - R&D Test Engineer - Spring or Summer 2027 · Devens, MA & Somerville, MA
- Intern - Plasma Physics - Summer 2027 · Devens, MA
- Intern - Composites and Insulation Materials - Summer 2027 · Somerville, MA
- Intern - I&C and Network Engineer - Spring or Summer 2027 · Devens, MA
- Intern - Systems Engineer - Summer 2027 · Devens, MA
- Intern - Microwave Engineer - Summer 2027 · Devens, MA
- Intern - Cryogenics Engineer - Spring 2027 · Devens, MA
- Intern - EHS Engineer - Spring or Summer 2027 · Devens, MA
- Intern - Materials Test Engineer - Summer 2027 · Devens, MA
- Intern - Nuclear Engineer - Summer 2027 · Devens, MA
- Intern - Assembly Technical Project Manager - Spring 2027 · Devens, MA
- Intern - Controls Engineer - Summer 2027 · Milpitas, CA
- Intern - Mechanical Equipment Engineer - Spring 2027 · Devens, MA
- Intern - Health Physics - Spring or Summer 2027 · Devens, MA
- Intern - Nuclear/Systems Engineer - Summer 2027 · Devens, MA
Assembly (16)
- Subassemblies Technician · Devens, MA
- Senior Manufacturing Engineer - Assembly - Second Shift · Devens, MA
- Field Assembly Manager · Devens, MA
- Assembly Test Implementation Engineer · Devens, MA
- Subassemblies Specialist · Devens, MA
- Senior Manufacturing Engineer - Assembly · Devens, MA
- Senior Field Mechanical Engineer - Assembly - Second Shift · Devens, MA
- Senior Test Planning Engineer - Assembly · Devens, MA
- Operations Coordinator - Assembly · Devens, MA
- Manager, Process Engineering - Assembly · Devens, MA
- Lead Assembly Technician - Third Shfit · Devens, MA
- Lead Technician, Assembly Testing · Devens, MA
- Senior Mechanical Engineer - Assembly Equipment · Devens, MA
- Lead Assembly Technician · Devens, MA
- Field Mechanical Engineer - Assembly · Devens, MA
- Senior Field Mechanical Engineer - Assembly · Devens, MA
Technology Development (12)
- Materials Test Operator - Contract · Devens, MA
- Molten Salt Engineer · Devens, MA
- Senior Computational Materials Scientist · Devens, MA
- Staff Fuel Cycle & Blanket Test Engineer · Devens, MA
- Staff Materials Engineer - Metallurgical Engineering · Devens, MA
- Staff Computational Materials Scientist · Devens, MA
- Senior Mechanical Engineer, Process Equipment · Devens, MA
- Staff Mechanical Engineer - Remote Maintenance · Devens, MA
- Senior Mechanical Engineer - Remote Maintenance · Devens, MA
- Molten Salt Engineer · Devens, MA
- Staff Multiphysics Modeler · Devens, MA
- Senior R&D Electromagnetic Analysis Engineer · Devens, MA
R&D Test (7)
- R&D Test Engineer · Devens, MA
- Senior R&D Engineer · Devens, MA
- R&D Test Engineer - Electrical Power Systems · Devens, MA
- R&D Technician - First Shift · Devens, MA
- Senior R&D Technical Project Manager · Devens, MA
- Senior R&D Test Engineer - Fluid Systems · Devens, MA
- R&D Test Engineer - Fluid Systems · Devens, MA
Supply Chain (7)
- Staff Supply Chain Engineer - Molten Salts · Devens, MA
- Supply Chain Operations Coordinator - First Shift · Devens, MA
- Supply Chain Coordinator - Contract · Ayer, MA
- Staff Supplier Integration Manager - ARC · Devens, MA
- Supply Chain Operations Supervisor · Devens, MA
- Director, Supply Chain · Devens, MA
- Supply Chain Operations Coordinator - First Shift - Contract · Devens, MA
Electrical Engineering (5)
- Senior Power Electronics Engineer · Devens, MA
- RF Electronics Engineer · Devens, MA
- Electrical Engineer · Devens, MA
- Senior RF Test Engineer · Devens, MA
- Principal RF Systems Engineer · Devens, MA
Superconductor R&D (5)
- Senior Electrical Engineer · Milpitas, CA
- Senior Mechanical Engineer · Milpitas, CA
- Equipment Technician · Milpitas, CA
- Staff Electrical Engineer · Milpitas, CA
- Senior Metrology Engineer · Milpitas, CA
Tool Development (5)
- Senior Modeling and Simulation Engineer · Milpitas, CA
- Senior Mechanical Engineer - Vacuum · Milpitas, CA
- Principal Mechanical Engineer - Web Handling · Milpitas, CA
- Staff Mechanical Engineer - Vacuum · Milpitas, CA
- Staff Modeling and Simulation Engineer · Milpitas, CA
Accounting (4)
- Treasury and Tax Analyst · Devens, MA
- Technical Accounting and Internal Controls Lead · Devens, MA
- Accounts Payable Specialist · Devens, MA
- Senior Manager, Accounting Operations · Devens, MA
PowerBu (4)
- Techno-Economic Analyst · Devens, MA
- Power Business Research and Analytics Manager · Devens, MA
- Project Manager, Project Development · Devens, MA & Richmond, VA
- Head of Power Origination · Devens, MA
Software Engineering (4)
- Senior Embedded Software Engineer · Devens, MA
- Senior Data and Operations Software Engineer · Devens, MA
- Senior Algorithms and Simulation Software Engineer · Devens, MA
- Control Software Engineer · Devens, MA
FP&A (3)
- Senior Finance Analyst, Operations · Devens, MA
- Director, Corporate FP&A · Devens, MA
- Director, Manufacturing, Operations & Supply Chain Finance · Devens, MA
Quality (3)
- Senior Quality Engineer · Devens, MA
- Quality Engineer - Nights & Weekend Shifts + Differential Pay · Devens, MA
- NDT Manager – Responsible Level III · Devens, MA
IT (3)
- Staff OT/IT Support Engineer · Milpitas, CA
- Enterprise Systems Administrator · Devens, MA
- Senior Enterprise Solution Architect · Milpitas, CA
Tokamak Systems (2)
- Senior Diagnostics Mechanical Engineer · Devens, MA
- Diagnostics Mechanical Engineer · Devens, MA
Process Engineering (2)
- Staff Process Engineer · Devens, MA
- Senior Process Engineer · Devens, MA
Project Management Office (2)
- Senior Technical Project Manager - Design/Assembly · Devens, MA
- Senior Technical Project Manager - Magnet Production · Devens, MA
Plant Design and Construction Engineering (2)
- CSA Project Engineer · Devens, MA & Richmond, VA
- Lead Piping Engineer · Devens, MA
Plasma Physics (2)
- Staff Scientist - Plasma Material Interaction · Devens, MA
- Principal Scientist - Radio Frequency Plasma Heating · Devens, MA
HTS Magnet Engineering (2)
- Mechanical Engineer – Cable Magnets · Devens, MA
- Senior Mechanical Engineer – Cable Magnets · Devens, MA
Career Day (1)
- Hiring Event for Production Technicians: First, Second and Third shifts available · Somerville, MA
SPARC Plant (1)
- Shift Operator- SPARC - Third Shift · Devens, MA
Open Innovation (1)
- Senior Strategic Program Manager, Open Innovation · Devens, MA
Environmental Health, Safety, and Security (1)
- Environmental, Health & Safety Technician · Devens, MA
Counsel & Operations (1)
- Assistant General Counsel – Commercial · Devens, MA
Office Operations (1)
- Executive Operations Partner · Devens, MA
Structural Engineering (1)
- Senior Structural Mechanical Engineer · Devens, MA
Mechanical Engineering (1)
- Senior Manager, Mechanical Engineering — Vacuum Vessel · Devens, MA
How to reach the hiring team at Commonwealth Fusion Systems
Skip the application portal: open a role to see who is likely hiring for it — the hiring manager, a teammate and the recruiter — and send a short, personal note instead of one more application.
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