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Commonwealth Fusion Systems (CFS)

Lead Production Welder

Become a Lead Production Welder at Commonwealth Fusion Systems in Somerville, Massachusetts. Lead a skilled team in welding high temperature superconducting magnets for fusion devices. Enjoy competitive pay, flexible vacation days, and a commitment to safety and professional growth.
Commonwealth Fusion Systems (CFS)
Commonwealth Fusion Systems (CFS)
Somerville, Massachusetts, United States   On-site   Full Time   USD 30–43 per hour  UTC-05:00

Commonwealth Fusion Systems (CFS)

Company Overview

Commonwealth Fusion Systems

Cambridge, MA, United States

2018

Business Model

Energy

Commonwealth Fusion Systems focuses on developing advanced fusion energy technology. Their core activities include research and development of superconducting magnets and fusion reactors aimed at providing a clean and virtually limitless energy source.

Their revenue streams primarily come from government grants, private investments, and partnerships with various organizations in the energy sector.

Locations & Geography

Commonwealth Fusion Systems operates primarily in the United States, with a significant presence in Cambridge, MA. They are also involved in international collaborations, expanding their influence in the global energy landscape.

Company Culture

Their mission is to accelerate the development of fusion energy to provide a sustainable and clean energy future. They value innovation, collaboration, and a commitment to scientific excellence.

Commonwealth Fusion Systems fosters a dynamic and inclusive work environment that encourages creativity and teamwork. Employees are motivated to push the boundaries of science and technology in a supportive atmosphere.

They emphasize continuous learning and professional growth, offering various training programs and opportunities for employees to advance their skills in the field of fusion energy.

Activities & Projects

Commonwealth Fusion Systems is currently working on the SPARC project, which aims to demonstrate net-positive energy from a fusion reactor. This project is a significant step towards commercial fusion energy.

They are pioneering the use of high-temperature superconductors in fusion technology, which enhances the efficiency and feasibility of fusion reactors. This innovation is crucial for making fusion energy a reality.

Their sustainability practices focus on developing clean energy solutions that minimize environmental impact. By harnessing fusion energy, they aim to provide a sustainable alternative to fossil fuels.

Career Opportunities

Commonwealth Fusion Systems typically has openings for roles in engineering, research, and project management. They seek individuals passionate about advancing fusion technology and contributing to a sustainable energy future.

They offer competitive salaries, comprehensive health benefits, and opportunities for professional development. Employees also enjoy a collaborative work culture that values innovation and creativity.

Contact Information

LinkedIn

cfs.energy

Careers at Commonwealth Fusion Systems


Last updated on 2025-03-27 | Report an issue

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 over $2 billion in capital – more than any other fusion energy company in the U.S.

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 Lead Production Welder

The Lead Production Welder at Commonwealth Fusion Systems is responsible for leading a highly skilled and efficient team welding the world’s strongest high temperature superconducting magnets and assemblies for integration into CFS fusion devices. The role is responsible for continuously improving production welding tasks, maintaining schedules with resourcing, and assuring quality requirements are met per documentation. The welding team is a hands-on build team working with mechanical, electrical, magnetic, cryogenic, pressure, vacuum, and pneumatic systems.

What you'll do

  • Support production welding operations including coordinating welding operations, maintaining welder continuity, supporting first encounters, planning and execution of weld repairs, and process improvement projects
  • Advise and monitor welder safety
  • Provide weldability/manufacturability feedback to engineers for drawings, weld geometries, and tool access
  • Train & certify welders to meet Production needs, provide technical guidance, and maintain records of welder certification
  • Review and prepare welding instructions to ensure welders are familiar with the requirements and equipped to meet them
  • Define and standardize welding best practices across CFS Production
  • Implement welder feedback into welding procedures and work instructions
  • Standardize and manage weld consumables, production weld equipment

What we’re looking for

  • High school Diploma
  • 5+ years experience as a welder and/or welding operator in a manufacturing environment or on large structural systems and tooling
  • Understanding of weld drawings, symbols, terminology, and specifications
  • Familiarity with welding standards, including ASME BPVC Sec IX, ASME B31.1, AWS D1.1
  • Knowledge of safety requirements and practices, particularly as they relate to joining applications
  • Familiarity with welding, brazing, cutting equipment, theory, and application
  • Familiarity with Welding Inspection techniques, including visual inspection (VT), X-ray inspection (RT), dye penetrant (PT), ultrasonic inspection (UT), and magnetic particle testing (MT)
  • Familiarity working with stainless steel, aluminum, copper, refractory and nickel based alloys
  • Knowledge of Base Material and Welding Materials, including a basic understanding of welding metallurgy, weldability characteristics of base and filler metals
  • Proficiency with GMAW, GTAW, SMAW, FCAW processes and semi-automatic, mechanized and robotic equipment
  • Ability to obtain professional certifications such as AWS Certified Welding Inspector

Bonus points for

  • Knowledge of material testing methods and material specifications
  • Experience with LBW, OTW, brazing, soldering, and automated welding processes
  • Previous experience in a welding supervisory or management position
  • Strong problem solving skills, ability to approach new problems with creativity
  • Ability to work effectively in a multidisciplinary team of engineers, scientists, technical staff, and others

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 - $43 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

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.

About the role

June 20, 2025

Full Time

Company

June 20, 2025

On-site

USD 30–43 per hour

Commonwealth Fusion Systems (CFS)

cfs.energy

  •  Somerville, Massachusetts, United States

5+ years

UTC-05:00

Apply now

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