Welder -Nights & Weekend Shifts + Differential

Commonwealth Fusion Systems (CFS) is dedicated to delivering clean fusion energy fast enough to address humanity’s most urgent energy and climate challenges. The company is leading the transition away from fossil fuels by building commercial fusion power plants, enabled by its breakthrough high-temperature superconducting magnet technology. Backed by $4 billion in capital and a diverse team of experts, CFS is designing and deploying fusion systems in collaboration with policymakers and global suppliers.

The organization is committed to setting clear milestones, validating progress transparently, and helping build a robust fusion energy industry worldwide. Candidates can learn more about CFS and its opportunities rgy/careers.

This is a full-time Welder position with night and weekend shifts, including differential pay, in a hybrid work arrangement based in Ayer, MA with some flexibility for work from home when appropriate. The Welder will fabricate, weld, and assemble metal components used in fusion energy systems, following engineering drawings, blueprints, and technical specifications. Daily work includes setting up welding equipment, performing high-quality welds on a variety of materials, inspecting welds for quality and safety standards, and completing necessary documentation.

The role also involves collaborating with engineers and technicians on prototype and production builds, maintaining a clean and safe work area, and adhering to all safety policies and procedures. The Welder will support continuous improvement activities and may assist in training team members on welding best practices.

• Weld and inspect large metallic structures and tooling within specified timelines and budgets
• Set up welding processes as per specifications, incl. determining the correct equipment to use and methods based on the requirements
• Read and analyze drawings and take detailed measurements to plan the project layout
• Cut and join material
• Perform hand welding or semi-automated welding. Utilize advanced forms of welding when needed. Weld components in vertical, flat, and overhead positions
• Provide manufacturability feedback to design engineers for weld geometries and material selection
• Perform welding equipment qualification trials
• Troubleshoot and resolve manufacturing discrepancies with a focus on continuous improvement
• Follow safety procedures at all times

• Documented Training or Certification in most of the following:
  Blueprint Reading and Fabrication, Gas Metal Arc Welding (GMAW), Gas Tungsten Arc Welding (GTAW), Advanced Shielded Metal Arc Welding (SMAW)
• 5+ years' experience as a welder on large structural systems and tooling
• Experience with large metallic structures and manufacturing processes related to welding
• Experience in producing welds to pass industry standard requirements
• Experience welding stainless steel
• Experience using GTAW process to weld copper

• Experience in welding for pressure vessel, aerospace, and/or nuclear applications
• GTAW, GMAW, SMAW, Electron Beam and Laser Welding Experience
• Experience operating mechanized or automated welding equipment
• The ability to read and interpret technical drawings and documentation
• Excellent attention to detail
• Knowledge of various forms of welding equipment and procedures
• The capacity to work unsupervised
• A detailed understanding of mathematical and numerical data and calculations
• Project and time management

• 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 - $41 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
• 13 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