Lead Epi Engineer - Fremont, CA, United States
Originally posted 19 June 2026 by the employer.
About the role
This role involves the implementation, development, and continual process improvement of InP- and GaAs-based optoelectronic devices using MOCVD methods. Emphasis is placed on new product development, statistical analysis, and process control functionality to support both R&D and 24/7 manufacturing operations.
What you'll do
- Interact with Design and Product teams to plan and execute growth developments aimed at realizing newly conceived epitaxial designs and structures. - Explore process variants to improve existing growth workflows in capacity, yield, throughput, and costs. - Ensure compliance and minimize causes of variation in currently defined production processes and outputs. - Deliver presentations of development results to senior management and interdisciplinary teams. - Support production epi operations with on-shift technical and operations-based personnel, including occasional night or weekend support.
What you'll need
- M.S. in Chemical Engineering, Mechanical Engineering, Physics, Electrical Engineering, or related fields, or equivalent experience. - Experience with standard epitaxial characterization tools such as XRD, ECV, PL, and reflectance. - Familiarity with SPC, Gage, DOE, and manufacturing data analysis methodologies. - Ability to work in cleanroom and fab environments under full gowning and safety requirements.
Nice to have
- A minimum of 5 years of experience with MOCVD crystal growth of GaAs/InP-based materials and/or compound semiconductor processing. - Experience with JMP.
Skills: InP, MOCVD, epitaxy, optoelectronic devices, MOCVD crystal growth, GaAs
This role has been open 124 days — well above the 59-day median for Compound Semiconductor Engineering roles.
Compound Semiconductor Engineering · Compound Semiconductor
|
Open roles in category
63
|
Median days open
59 d
|
Median salary
—
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See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
| Metric | Coherent Corp | All employers we track in this specialty (63 roles · 25 employers) |
|---|---|---|
| Open roles in this specialty | 7 | 63 |
| Median days open | 120 d | 59 d (+61 d vs this employer) |
| Median salary (USD postings) | — | — |
Skills observed across this category: InP, MOCVD, epitaxy, optoelectronic devices, MOCVD crystal growth, GaAs
Who's hiring in this category
- Infineon Technologies · 9 open roles · median 43 d
- Coherent Corp (this employer) · 7 open roles · median 121 d
- Lumentum · 6 open roles · median 108 d
- STMicroelectronics · 4 open roles · median 68 d
- Texas Instruments · 4 open roles · median 42 d
- Keysight Technologies · 3 open roles · median 38 d
How we counted: 63 open Compound Semiconductor Engineering (Compound Semiconductor) roles from 25 employers tracked in the SemiconductorJobs index, counted 23 Oct 2026. Specialty figures count only roles carrying this exact specialty label, so an employer's related work in neighbouring specialties is not included there. Figures refresh nightly.