Fiber Optic Specialist - Third Shift
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Before you apply
Salary$79k – $100k
LocationDevens, MA
Work modeon-site
Typefull-time
SeniorityMid
Experience4+ yrs
DepartmentCorporate Operations, Operations - Manufacturing
Company size501–1,000 people
PostedSep 4, 2026 · 2mo ago
Verified live3d ago
At a glanceSummarised by Seekless from the posting.
4+ years experience in fiber optics field applications
Experience with taking attenuation, insertion loss, and spectral analysis measurements using various measurement equipment (such as OTDR, OSA, OBR, power meter, etc.)
Must have experience fiber handling in a lab setting with known standards
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
Skills: Fiber re-coating
Skills: Specialty fiber splicing
Skills: Fiber proof-testing
Skills: 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
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
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.
Skills
OTDR
OSA
OBR
power meter
polyimide-coated fibers
interrogators
optical multiplexers
optical switches
fault locators
fiber coating removal
fiber re-coating
specialty fiber splicing
fiber proof-testing
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.
Hours: 10:00 pm - 6:30 am
Rate of pay: $38 - $48 per hour + 15% differential
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
What we’re looking for:
•
4+ years experience in fiber optics field applications
•
Experience with taking attenuation, insertion loss, and spectral analysis measurements using various measurement equipment (such as OTDR, OSA, OBR, power meter, etc.)
•
Must have experience fiber handling in a lab setting with known standards
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
#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.
Legal
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.