Senior Process Engineer

Plessey Semiconductors • plymouth, england, United-Kingdom • Posted June 18, 2026

Location plymouth, england
Job Type Full-time
Category Engineering
Posted June 18, 2026

Senior Process Engineer

Department: Engineering

Employment Type: Full Time

Location: Plymouth

Description

We are seeking a Senior Process Engineer – Wet Etch or Dry Etch to develop, optimise, and sustain etching processes for MicroLED device fabrication. This role will support high-resolution pixel patterning, mesa isolation, sidewall profile control, and defect reduction across III-V semiconductor materials.

Key Responsibilities

  • Develop and optimise wet etch and/or dry etch processes for MicroLED fabrication.
  • Define etch recipes for IIIV materials.
  • Optimise critical parameters including etch rate, selectivity, anisotropy, sidewall angle, surface roughness, and uniformity.
  • Support pixel scaling while maintaining yield and device performance.
  • Perform process qualification, tool matching, and SPC control.
  • Troubleshoot process excursions, defe...

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