RF Electro-Mechanical Technician

Cfsenergy; Harvard (MA); On-site; USD 90,000 - 125,000; Full time

Job summary

Commonwealth Fusion Systems is seeking a Lead RF Electro-Mechanical Technician to drive hands-on assembly, wiring, and integration of RF systems in a fast‑paced lab and manufacturing setting. You will bridge engineering priorities with shop floor execution and mentor a small technician team on precision tasks.

The role requires strong leadership, communication, and RF/test experience, with a focus on safety and quality in a high‑voltage environment. On-site work with occasional travel may occur.

Qualifications

• High school diploma or equivalent; technical training welcomed.
• Minimum 5 years with hand/power tools and technical assembly.
• Experience with high voltage up to 480V is preferred.

Responsibilities

• Lead hands-on assembly and fabrication of RF components.
• Build I&C cabinets and integrate sensors.
• Work with 480V systems and test equipment.
• Perform precision mechanical and electrical tasks.
• Collaborate with technicians and operators on commissioning.
• Adhere to safety and quality standards.
• Report progress to supervisor.
• Read electrical schematics and wiring diagrams.
• Occasional travel or on-call may be required.

Skills

Leadership

Communication

RF testing

Soldering

Electrical assembly

Mechanical assembly

Schematic reading

Safety compliance

Education

High school diploma

Technical school or military training

Tools

RF test equipment

Hand & power tools

Electrical measurement gear

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, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading 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 Lead RF Electro-Mechanical Technician

We are seeking a highly motivated RF Electro-Mechanical Technician to join our team of physicists, engineers, and technicians in our core mission: accelerating the development of fusion energy.

In this highly independent working lead role, you will navigate a dynamic environment split between cutting‑edge R&D and assembly-focused manufacturing. You will act as the vital interface between the shop floor and engineering, translating engineering priorities into daily action for a small technician team.

We know the perfect candidate might not be an expert in every single task listed below on day one. What matters most is that you are a reliable leader, a strong communicator, and a skilled technician ready to turn wrenches, learn fast, and bridge the gap between engineering and assembly.

• Hands-on Assembly & Fabrication:
• Use hand and power tools to assemble complex components for RF transmitters
• Build I&C (Instrumentation and Controls) cabinets
• Integrate various sensors and mechanical systems
• High-Voltage & Testing:
• Work safely and confidently with 480V electrical systems
• Handle RF and electrical test equipment to validate builds and ensure systems are functioning correctly from start to finish
• Precision Work:
• Perform detailed technical tasks, including plumbing, wiring, and soldering, while maintaining meticulous attention to detail and cleanliness
• Work with other technicians and equipment operators in the I&C equipment commissioning and troubleshooting
• Safety & Quality Standards:
• Operate and maintain highly technical apparatus with a steadfast commitment to safety and quality, following the current team’s standards
• Ensure safety is always the first priority in any testing activity
• Report on and be accountable for progress to their supervisor
• High school diploma, equivalency certificate, or higher (Note: Graduation from a two-year technical school or military technical training is highly acceptable and welcomed)
• Minimum of 5 years’ experience with hand/power tools, machine shop equipment, and a variety of technical support skills (mechanical/electrical assembly, plumbing, soldering, and wiring)
• • Hands-on experience working safely with high voltage (up to 480V)
  • Hands-on experience with RF and electrical measurement/test equipment
  • Strong foundational understanding of mechanical and electrical systems, alongside basic computer proficiency (email, video conferencing, data entry, etc.)
  • Excellent communication and teamwork skills. Ability to take direction from leadership, work independently, and thrive in an agile environment balancing R&D and manufacturing demands
• Soldering of RF components on circuit boards.
• Ability to read and interpret complex electrical schematics and wiring diagrams
• • Ability to occasionally lift up to 50 lbs
  • Perform activities such as stooping, climbing, typing, standing, sitting, etc. 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
  • Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
  • Willingness to occasionally travel or work required nights/weekends/on-call

#LI-Onsite

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.