Optical Test Technician: Precision Lab & Fiber

COKA; San Francisco (CA); On-site; USD 60,000 - 85,000; Full time

Job summary

COKA is seeking an Optical Test Lab Technician in San Francisco to support validation of silicon photonics and interconnect products. You will set up test benches, run measurements, and document results under Optical Test Engineers.

This hands-on role emphasizes precision, reliability, and adherence to safety while preparing fixtures, wiring and calibration routines, with opportunities to grow into more advanced roles.

Qualifications

• Associate's degree or technical certificate in optics, photonics, or related field.
• 1–3 years in a lab, test, or manufacturing environment with fiber optics or precision assembly.
• Precise, hands-on work with small components and microscope work.
• Familiarity with optical/electrical test equipment or willingness to learn.
• Basic computer literacy and ability to run scripted procedures; Python is a plus.
• Strong documentation and strict adherence to procedures.

Responsibilities

• Set up, operate, and maintain optical test benches and fixtures per procedures.
• Perform routine optical measurements (insertion loss, return loss, power) with micron/sub‑micron alignment.
• Assist with assembly and wiring of custom test fixtures and jigs by engineering.
• Run pre-written Python scripts to automate data collection and flag anomalies.
• Calibrate and maintain optical test equipment and light sources according to schedule.
• Prepare and clean fiber components (cleaving, cleaning, splicing, connectorizing).
• Record test data and organize samples, cables, and equipment for smooth lab operation.
• Support test station bring-up and document setup steps, ensuring safety.

Skills

Fine motor skills

Attention to detail

Documentation

Following procedures

Python basics

Education

Associate's degree or technical certificate (Optics/Photonics)

Tools

Power meters

Light sources

Multimeters

Oscilloscopes

Fiber connectors

Job description

COKA is seeking an Optical Test Lab Technician in San Francisco to support validation of silicon photonics and interconnect products. You will set up test benches, run measurements, and document results under Optical Test Engineers.

This hands-on role emphasizes precision, reliability, and adherence to safety while preparing fixtures, wiring and calibration routines, with opportunities to grow into more advanced roles.