Fiber Optic Specialist - First Shift

Commonwealth Fusion Systems LLC; Harvard (MA); On-site; USD 52,000 - 66,000; Full time

Benefits offered by this job

Equity

Health, dental, and vision insurance

401(k) with employer matching

Generous paid time off

Flexible holidays

Parental leave

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems is seeking a Fiber Optic Specialist for first shift in Devens, MA. The role supports R&D and manufacturing with fiber splicing, testing, and integration of fibers into complex designs, while maintaining fiber quality and minimizing attenuation.

You will collaborate with Operations, Maintenance, Quality, and other teams to meet goals. This role requires hands-on work with high-precision optical components and a strong emphasis on safety and continuous improvement.

Qualifications

• Experience with fiber optics field applications.
• Ability to lift up to 50 lbs.
• Willingness to travel or work nights/weekends/on-call.

Responsibilities

• Handle, route, splice, test thousands of fibers in the SPARC fusion machine.
• Integrate small assemblies with fiber work (passthrough flanges, enclosures).
• Install fiber wrappings and enclosures.
• Train technicians in installation, splicing, routing, and measurement procedures.
• Improve safety protocols for laser and fiber optic handling.
• Fulfill manufacturing and R&D fiber needs.

Skills

Fiber splicing

Fiber testing

Optical fiber handling

Safety awareness

Tools

OTDR

Interrogators

Optical switches

Job description

Fiber Optic Specialist - First Shift

Devens, MA. Corporate Operations – Operations - Manufacturing /Full-time /On-site

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 Fiber Optic Specialist

The Fiber Optic Applications Technician is an exciting and evolving role with a responsibility for assisting R&D and production staff with all aspects of optical fiber work such as fiber splicing, testing, and incorporation of fibers into complex design features while minimizing damage and attenuation to the fiber throughout its lifetime. The technician will ensure functional operation and preventative maintenance of equipment as well as continuous improvement. Responsibilities include close cooperation with Operations, Maintenance, Quality and other departments to ensure goals and objectives are met. This role will lead the way to making Earth sustainable for the future to come. This work is conducted within a multi-disciplinary team of technicians and engineers. Participation and clear, concise communication while working with the team is crucial.

What you’ll do

• Conduct the handling, routing, splicing, testing, and potential repair of 1000’s of fibers throughout the SPARC fusion machine
• Perform mechanical integration of small assemblies adjacent or in conjunction with the fiber work, such as passthrough flanges and enclosures for the fibers
• Install composite or polymer wrappings for the fibers and their enclosures
• Train other technicians as needed in the proper installation, splicing, routing, and measurement procedures
• Improve safety protocols for laser and fiber optic handling
• Fulfill manufacturing and R&D fiber needs

Bonus points for

• 7+ years experience in fiber optics field applications
• Experience in utilizing distributed sensing arrays
• Experience with polyimide and a variety of coated fibers
• At least 1 year experience in teaching and/or training fiber splicing techniques and cable assemblies
• Experienced with designing, building, and testing fiber cable assemblies, particularly in cryogen and vacuum conditions
• Experience performing fiber optic work in environments with limited space or requiring odd positions.

Skills

• Fiber coating removal
• Fiber re-coating
• Specialty fiber splicing
• Fiber proof-testing
• Measurement and analysis techniques with optical tools and equipment such as interrogators, optical multiplexers, optical switches, fault locators, OTDR, etc.
• Knowledgeable about various optics sensing techniques and optical attenuation/insertion loss mechanisms
• Basic Materials Science knowledge
• Good communication skills
• Good attention to detail

Must-have Requirements

• Ability to occasionally lift up to 50 lbs
• Perform activities: Stooping, typing, standing, or sitting for extended periods of time
• May need to operate in small confined places in odd locations
• Work locations could include being on platforms around 25 feet high
• 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 or work required nights/weekends/on-call occasionally

$38 - $48 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

• 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

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.