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Quintessent

Process Development Engineer

Quintessent Goleta, CA, United States Full-time 5 hours ago
Process & Device Engineering

Focuses on fabrication process development and characterization for III-V quantum dot lasers.

About the role

Core responsibilities include the development, optimization, and execution of optoelectronic semiconductor device fabrication processes from early-stage concept demonstrations to small-volume product prototyping and manufacturing. The position involves cleanroom material and device characterization and fabrication research for III-V quantum dot lasers.

What you'll do

  • Conduct research for III-V quantum dot lasers, covering material characterization, fabrication process development, and optimization for device packaging.
  • Perform semiconductor device fabrication directly using deposition, lithography, etching, and metrology tools.
  • Coordinate with other professionals to select materials for specific products and develop methods to use existing materials.
  • Evaluate technical specifications relating to the design objectives of processes or products.

What you'll need

  • B.S., M.S., or Ph.D. in Physics, Applied Physics, Electrical Engineering, Mechanical Engineering, or Materials Science.
  • Hands-on experience in semiconductor device fabrication, specifically III-V and silicon processes including wet & dry etching, photolithography, and thin film deposition.
  • Hands-on experience using cleanroom characterization tools such as SEM, optical microscopy, Nomarski microscopy, AFM, and ellipsometry.
  • Familiarity with mask layout software.
  • Ability to perform DOE (Design of Experiments) and failure analysis.

Nice to have

  • Basic knowledge of semiconductor materials, semiconductor lasers, and optoelectronic devices.
  • Previous experience in semiconductor laser characterization.

Skills: III-V, lasers, etching, photolithography, thin film deposition

More semiconductor jobs: GaN and SiC jobs · California jobs

Market context

This role has been open 4 days — well below the 37-day median for Compound Semiconductor Engineering roles.

Compound Semiconductor Engineering · Compound Semiconductor

Open roles in category
79
Median days open
37 d
Category median salary (all employers)
$127k
See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
How Quintessent compares in Compound Semiconductor Engineering hiring
Metric Quintessent All employers we track in this specialty (79 roles · 25 employers)
Open roles in this specialty 1 79
Median days open 4 d 37 d (−33 d vs this employer)
Median salary (USD postings) — $127k

Skills observed across this category: III-V, lasers, etching, photolithography, thin film deposition

Who's hiring in this category

  • Infineon Technologies · 10 open roles · median 31 d
  • MACOM · 10 open roles · median 11 d
  • Lumentum · 8 open roles · median 118 d
  • Coherent Corp · 7 open roles · median 137 d
  • Texas Instruments · 5 open roles · median 57 d
  • Nexperia · 4 open roles · median 138 d

How we counted: 79 open Compound Semiconductor Engineering (Compound Semiconductor) roles from 25 employers tracked in the SemiconductorJobs index, counted 8 Nov 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.

Apply now
Goleta, CA, United States
On-site
Full-time
5 hours ago

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