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Senior Epi Equipment Technician

Coherent · Fremont, CA

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Level
Technician
Team
Manufacturing
Degree
Required
Experience asked
10+ years
Industry
Industrial
Posted
30+ days ago

The role in 30 seconds

A technician-level manufacturing role at Coherent (industrial) in Fremont, CA. A ccountability – Own the Process and the Outcome.

They ask for
10+ years · degree required
Tools it names
Robotics, EHS / safety

Read from the posting. The full description is below.

From the plant jobs report · week of November 2, 2026

Manufacturing Technician roles in California: typical posted base $59k–$78k.

Median of the low and high ends of 9 live postings that list pay, out of 142 manufacturing technician openings in California, read from manufacturers' own careers sites.

California plant jobs report →Pay by team and state →What moves pay →

How this role compares

Against 105 other live manufacturing postings in California.

Base pay
Not listed in this posting

Typical $78k–$105k, from 11 postings that list pay.

Experience asked
More than usual (10+ vs 5+)

Similar roles usually ask 5+ years.

Skills these teams ask for most

  • Team leadership 40%
  • Tooling 36%
  • Machining 33%
  • CNC 30%
  • Lean 23%

✓ = this posting asks for it too. % = share of similar postings that mention it.

Stands out: this posting asks for EHS / safety, which few similar roles mention. If you have it, lead with it.

It asks for 10+ years. If you're close, apply anyway: requirements are a wish list. Talk to someone doing this work there first.

At a glance

Promotion path mentioned

Pulled from the posting text. If it's not listed here, the posting didn't say.

How to get in at this plant

Five moves over a week or two. The first one takes ten minutes.

  1. 1

    Pick 2–3 people on the Manufacturing team at Coherent

    We found 3 people at this company and state: 3 leaders. Engineers who joined in the last year or two reply the most. See them ↓

  2. 2

    Send a short, curious note

    One real question about their work. No favors yet. Each person gets a different note, written for this role.

    Write to Jack → (free)
  3. 3

    Turn a reply into a short call

    Questions worth asking about this team:

    • What does a normal week look like on your team?
    • Is the work mostly new product launches or sustaining existing lines?
    • How much time do you spend on the floor versus at a desk?
    • How did you land the job? What stood out in your interviews?
  4. 4

    Apply with someone vouching for you

    If the call went well, ask whether they’d pass your résumé to the hiring manager. Send your résumé link, apply that day, and let them know.

  5. 5

    Bring proof to the interview

    One page of before-and-after numbers from projects you led: scrap, OEE, cycle time, cost. Plant managers hire on results.

This plant: Coherent in Fremont

6 other open roles at this site · 3 people we found in manufacturing roles at Coherent.

Full description from CoherentAs posted on their careers site.Show

Responsibilities

The position involves supporting the MOCVD equipment engineer involving maintenance of InP-based MOCVD Aixtron growth systems. Particular emphasis is placed on following precise maintenance procedures for safe and effective repair. The technician should assume flexibility in working hours in order to ensure full communication and process compliance in support of on-shift-based technical and operations-based personnel.

  • ◆Interaction with process engineering teams to plan and execute scheduled maintenance procedures as well as helping develop new procedures for unexpected or new failure modes.
  • ◆Logging and tracking of machine parameters in order to detect incipient failures or deviations from normal operation
  • ◆Participate in maintenance events, including work on gas cylinder changes, abatement column changes, process piping and plumbing requiring supplied air respirators such as SCBA and supplied air-line breathing apparatus
  • ◆Troubleshooting: Diagnose and resolve equipment or process-related issues to minimize downtime and ensure continuous production.
  • ◆Collaboration: Work closely with facilities and Epi process engineering to ensure safe and effective operation of MOCVD equipment
  • ◆Documentation: train and certify on documented procedures including routine maintenance procedures, spare parts inventory, and other equipment support functions.
  • ◆Belong to site Emergency Response Team

Education & Experience

  • ✓AA degree with 6-10 years experience
  • ✓SCBA certification and experience with carrying out maintenance procedures while under supplied air
  • ✓2 years minimum hands-on experience with maintenance and repair of complex automated semiconductor process equipment
  • ✓2 years minimum hands-on experience with vacuum equipment maintenance, troubleshooting and repair

Requirements

  • ✓Able to work effectively in cramped conditions while wearing PPE including supplied-air breathing apparatus
  • ✓Able to maneuver and safely handle heavy equipment
  • ✓Able to pass yearly physical and SCBA respirator mask fit test for respiratory safety

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.:

I ntegrity – Create an Environment of Trust

C ollaboration – Innovate Through the Sharing of Ideas

A ccountability – Own the Process and the Outcome

R espect – Recognize the Value in Everyone

E nthusiasm – Find a Sense of Purpose in Work

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 t

Show full 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.

The position is for support and maintenance of Aixtron G4 MOCVD reactors running InP and GaAs processes. The maintenance technician carries out routine maintenance of the reactors and all support systems, including chemical source changes, vacuum system maintenance, robotic wafer handler maintenance, chamber cleans, exhaust abatement system maintenance, troubleshooting and repair of subsystem faults. Additionally, training of other equipment technicians in these routine tasks is required.

Skills

  • •Strong mechanical aptitude
  • •Work in a systematic and organized way
  • •Hands-on, roll up sleeves attitude
  • •Clear and efficient communication and documentation skills
  • •Team player
  • •Certified or able to obtain Hazmat Technician certification

Working Conditions

  • •5 days/week, 8 hour weekday work schedule
  • •Must be able to function in a fast-paced environment, carrying out multiple projects at a time.

Physical

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