Technician - Welding and Assembly - Contract

Cfsenergy; Harvard (MA); On-site; USD 65,000 - 90,000; Full time

Job summary

Commonwealth Fusion Systems in the United States is seeking a hands-on TIG welder and technician to assemble, weld and test high‑precision electromechanical assemblies for large‑scale structures. This role focuses on quality, safety, and continuous improvement in a fast‑paced, collaborative environment.

You will read drawings, operate production and magnet equipment, perform precision soldering and wiring, and collaborate with engineers to refine processes and manufacturability.

Qualifications

• High school diploma or equivalent.
• 3+ years in electromechanical or electrical/mechanical assembly.
• 3+ years welding experience with structural systems and tooling.
• Ability to read and interpret technical documents, blueprints, and schematics.
• Documented training or certifications in welding processes (e.g., GMAW, GTAW, SMAW).
• Ability to lift up to 50 lbs regularly and perform physically demanding tasks.

Responsibilities

• 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.

Skills

Electromechanical assembly

Welding experience

Blueprints & schematics reading

Tool proficiency

Safety awareness

Education

High school diploma or equivalent

Tools

GMAW

GTAW

SMAW

Calipers & micrometers

Torque wrenches

Job description

About Commonwealth Fusion Systems

About Commonwealth Fusion Systems:

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 we're 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.

Job Summary

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.

Responsibilities

• 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

Qualifications

• 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)
• 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

Company Values

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.

Equity and Diversity

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.

Export Control Laws

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.