Job Description: Fiber Optic Specialist

Location

• Devens, MA

Team

• SPARC Tokamak Team 6 Assembly

Employment Type

• Full-time, On-site

About Commonwealth Fusion Systems

• Mission: Deliver urgent transition to fusion energy.
• Focus: Designing and building commercially viable fusion power plants.
• Raised nearly $3 billion in capital since 2018.
• Largest and leading private fusion company in the world.

Role Overview

• Responsible for all aspects of optical fiber work including handling, splicing, testing, and integrating fibers into complex designs during assembly of the fusion machine.
• Ensure functional installation, health, and operation of fibers.
• Identify opportunities for continuous improvement.
• Collaborate closely with Operations, Engineering, Quality, and other departments.
• Work within a multi-disciplinary team of technicians and engineers.
• Shift: First shift (7:00 am to 3:00 pm) with possible overtime.

Responsibilities

• Handle, route, splice, test, and repair thousands of fibers throughout the SPARC fusion machine.
• Perform mechanical integration of small assemblies related to fiber work (e.g., passthrough flanges and enclosures).
• Install composite or polymer wrappings for fibers and enclosures.
• Train other technicians on installation, splicing, routing, and measurement procedures.
• Improve safety protocols for laser and fiber optic handling.
• Support manufacturing and R&D fiber needs.

Qualifications

Required

• 4+ years experience in fiber optics field applications.
• Experience with attenuation, insertion loss, spectral analysis measurements using equipment such as OTDR, OSA, OBR, power meter.
• Experience in fiber handling in a lab setting with known standards.

Bonus Points For

• 7+ years experience in fiber optics field applications.
• Experience with distributed sensing arrays.
• Experience with polyimide and various coated fibers.
• At least 1 year teaching/training fiber splicing techniques and cable assemblies.
• Experience designing/building/testing fiber cable assemblies in cryogen and vacuum conditions.
• Experience working in limited space or odd positions environments.

Skills

• Fiber coating removal and re-coating.
• Specialty fiber splicing.
• Fiber proof-testing.
• Measurement/analysis techniques with optical tools (interrogators, multiplexers, switches, fault locators).
• Knowledge of optics sensing techniques and optical attenuation/insertion loss mechanisms.
• Basic Materials Science knowledge.
• Good communication skills and attention to detail.

Physical Requirements & Work Conditions

• Ability to occasionally lift up to 50 lbs.
• Activities include stooping, typing, standing or sitting for extended periods.
• May need to work in small confined spaces or odd locations; platforms up to 25 feet high.
• Dedication to safety around hazards such as heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, cryogenics.
• Willingness to travel or work nights/weekends/on-call occasionally.

Compensation & Benefits

• Hourly rate: $30 - $48 (depends on level/location/experience).
• Equity + benefits including:
• Competitive compensation with equity
• 13 Company-wide Holidays
• Flexible vacation days
• 10 sick days
• Generous parental leave policy
• Health dental vision insurance
• 401(k) with employer matching
• Professional growth opportunities
• Team-building activities

Additional Information

• Commitment to diversity and equal opportunity employment.
• Compliance with U.S. Export Control Laws required for employment.