Machinist

Cfsenergy; Harvard (MA); On-site; USD 60,000 - 90,000; Full time

Job summary

Commonwealth Fusion Systems is seeking a skilled Machinist to machine and modify parts from verbal instructions, drawings and solid models using 3 axis to 5 axis CNC equipment including waterjet, milling and turning centers. Strong CAD/G‑code skills and attention to detail are essential.

The role emphasizes safety, 5S discipline, and the ability to work in a fast‑paced, team‑oriented environment. Willingness to travel and occasional off‑hours support may be required.

Qualifications

• Formal trades or apprenticeship completed.
• 5+ years CNC experience in machine trade.
• Proficient in reading drawings and CAD models.
• Knowledge of G-code programming and machining practices.
• Willingness to travel or work nights/weekends/on-call as needed.

Responsibilities

• Safely program, set‑up and operate multiple CNC equipment with minimal assistance.
• Simultaneously operate more than one CNC machine at a time.
• Read and adhere to all verbal and written processes.
• Inspect parts using visual and hand inspection equipment (micrometers, calipers, etc.).
• Inspect, change and offset cutting tooling in CNC equipment.
• Maintain 5S and a clean, safe workspace.
• Perform daily preventative maintenance on equipment.
• Collaborate professionally with coworkers daily.
• Travel or work nights/weekends/on‑call as required.

Skills

CNC machining

CAD

G-code

5S

Teamwork

Safety

Reading blueprints

Communication

Education

Formal trades or apprenticeship programs

Higher level trade school certification or degree

Tools

Mastercam

CAD software

G-code familiarity

Job description

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.

Join the power movement as a Machinist

This position will be responsible for machining or modifying parts per use of verbal communication, drawings and solid models using standard machine shop tooling such as 3 axis machining centers, waterjet, Trak mill and lathe, surface grinder and standard equipment.

Responsibilities

• Safely program, set‑up and operate multiple CNC equipment with minimal assistance.
• Simultaneously operate more than one CNC machine at a time.
• Read and adhere to all verbal and written processes.
• Inspect product utilizing visual and hand inspection equipment (microscopes, vernier calipers, micrometers, drop indicators, profilometer, etc.).
• Inspect, change and make offsets to cutting tooling in CNC equipment.
• Use 5S to maintain a clean and safe workspace.
• Perform daily preventative maintenance on equipment.
• Interact in a professional manner with coworkers on a daily basis.
• Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics.
• Perform activities such as typing, standing, or sitting for extended periods of time.

Qualifications

• Formal trades or apprenticeship programs.
• Higher level trade school certification or degree.
• 5 years experience in CNC machine trade.
• Good computer skills.
• Experience programming with CAD.
• Basic knowledge of G-code.
• Strong work ethic and high attention to detail.
• Flexible ability to work in a fast‑paced team environment.
• Ability to manage sensitive and sometimes confidential information.
• Great communication skills.
• Openness to working overtime or to arrange start time to benefit part run times as required.
• Basic knowledge of welding and torches.
• Knowledge of how to use a plasma cutter.
• Basic knowledge of sheet metal fabrication.
• Trained in time management.
• Knowledge of how to calculate tolerance changes to atmospheric temperature changes in shops (CTE).
• Full knowledge of Mastercam.
• Experience with Haas machining centers.
• 4 and 5 axis machining experience.
• Waterjet experience.
• EDM (electrical discharge machine) experience.
• Ability to lift up to 50 lbs.
• Willingness to travel or work required nights/weekends/on‑call occasionally.

#LI-Onsite #CFS-NE

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.

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.