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Fiber Optic Specialist - Second Shift

Commonwealth Fusion SystemsSomerville, Massachussets, United StatesOnsite

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 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 over $2 billion in capital – more than any other fusion energy company in the U.S.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.This position will cover second shift- 2:30 pm - 11:30 pm.

What you'll do:


  • Work with engineering to develop splicing/routing techniques of >1000 fibers to minimize complexity, time, and cost
  • Train manufacturing technicians 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, 7+ years' experience preferred
  • Experience in utilizing distributed sensing arrays (FBG preferred)
  • 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:


  • Experience in utilizing distributed sensing arrays (FBG preferred)
  • Experience with polyimide 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
  • Skills:
  • * Fiber coating removal
  • * Fiber re-coating
  • * Specialty fiber splicing 
  • * Fiber proof-testing
  • Measurement techniques using 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 such as stooping, typing, standing, or sitting for extended periods of time, may need to operate in small confined places in odd locations
  • 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

$30 - $48 an hourSalary 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:

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Competitive compensation with equity

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12.5 Company-wide Holidays

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Flexible vacation days

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10 sick days

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Generous parental leave policy

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Health, dental, and vision insurance

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401(k) with employer matching

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Professional growth opportunities

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Team-building activities#LI-OnsiteAt 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.Apply for this job

Life at Commonwealth Fusion Systems

The fastest path to clean, limitless fusion energy in time to make a difference. Energy use is a fundamental enabler for improved quality of life worldwide, yet historically it has come at an extreme cost to the environment. Fusion energy can change that. We aim to deploy fusion energy to the world on a timescale that will make a difference. CFS is combining proven physics backed by decades of government-funded fusion research with a revolutionary superconducting magnet technology to accelerate the path to commercial fusion energy. If you are interested in helping us bring this vision to reality, we would like to hear from you.
Thrive Here & What We Value* Mission-driven and Impact-Oriented* Collaborative and Supportive Work Environment* Emphasis on Continuous Learning and Improvement* Focus on Safety and Wellbee**ng* Commitment to Diversity and Inclusion* Experience in Optimizing Plasma Confinement Systems* Professional Organization Membership* Senior Research Engineer Experience* Global Decarbonization Goals* Value for High-Temperature Superconducting (HTS) Magnet Technology
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