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Wafer Fab Technician

Coherent Corp.
Fremont, CA Full Time
POSTED ON 12/5/2025
AVAILABLE BEFORE 1/19/2026
Job Description

About Indium Phosphide (InP) Technology

The world’s communications infrastructure depends on semiconductor lasers, and particularly those based on indium phosphide technology. Indium phosphide lasers are engineered to emit at wavelengths that are optimal for long-distance transmission through fiber optics. In short, they enable the optical networks that form the global internet.

Coherent’s broad portfolio of InP components includes application-specific Fabry-Pérot lasers, directly modulated lasers (DMLs), and tunable lasers. It also includes photodiodes for high-speed receivers and power monitoring. In 2022, we introduced 200 Gbps indium phosphide electro-absorption modulated lasers (EMLs) for high-speed datacenter transceivers. This design provides our customers with the most advanced, robust, and cost-competitive laser devices for their 800G and next-gen 1.6T datacom transceiver designs.

Our world-class and highly reliable InP technology platform is one of the very few in the industry that has been proven, with more than one hundred million lasers in the field deployed over the last decades.

  • Semiconductor Wafer Fab
  • Dicing, Scribe, Cleave/Break
  • Microscope, Tweezer
  • Inspection, SPC, Quality Control
  • ISO 9000, 14000, Cleanroom, ESD

Primary Duties & Responsibilities

  • Process InP semiconductor wafers in a cleanroom and ESD-safe environment
  • Required to perform device testing using automatic testing equipment and SPC.
  • Able to operate multiple testers simultaneously.
  • Ability to perform device verification and defect inspection using microscope.
  • Able to interpret engineering travelers
  • Require good computer skills.
  • Able to record and verify discrepancies using travelers and MES on all testing processes, make modification and escalate issues if needed.
  • Ability to perform basic tester troubleshooting and provide data finding to Ops and engineering owner.
  • Good manual dexterity to perform bar level alignment and adjustment.
  • Able to learn, become certified, and operate multiple categories of automatic testing equipment and singulation tools to facilitate floor labor cross-training.
  • Able to understand equipment capacity, follow daily tester allocation and product priority adjustment, and achieve daily testing quantity target as required by planning department.
  • Ability to provide process training to coworkers using hands-on demonstration and interpretation of agile document.

Education & Experience

  • High School Diploma or Equivalent
  • At least 2 years of working experience in a high-tech manufacturing environment is desired

Skills

  • Experience with semi-automated and automated processing tools
  • Familiarity with Microsoft Excel and Word
  • Experience in wafer level or die level handling
  • Willing to work Overtime and be part of the ERT (Emergency Response Team)
  • Meticulous and thorough; diligent with data entry and follow workflow
  • Ability to speak, read, write, and comprehend English required
  • Integrity and self-motivated
  • Ability to work in fast paced team and independent setting all within a clean room
  • Knowledge of machining, construction, electrical useful

Working Conditions

  • Candidate to work on-site in a cleanroom environment where strict cleanliness rules will be enforced.

Physical Requirements

  • Able to stand for duration of shift when needed

Safety Requirements

All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.

Quality And Environmental Responsibilities

Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.

Culture Commitment

Ensure adherence to company’s values (ICARE) in all aspects of your position at Coherent Corp.:

Integrity – Create an Environment of Trust

Collaboration – Innovate Through the Sharing of Ideas

Accountability – Own the Process and the Outcome

Respect – Recognize the Value in Everyone

Enthusiasm – Find a Sense of Purpose in Work

Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

If you need assistance or an accommodation due to a disability, you may contact us at talentacquisition@coherent.com .

About Us

Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!

Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.

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Salary : $23 - $28

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