Private Health Scheme
Group Pension Plan
Discretionary Bonus Scheme

Senior Process Engineer

Salary commensurate with skills and experience
Location Plymouth
Mergefield Title {Mergefield Value}
Mergefield Title {Mergefield Value}

This is a {Advertised Permanent / Temporary}, {Advertised Full Time / Part Time} vacancy that will close in {x} days at {xx:xx} BST.

The Vacancy

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, defects, and yield loss related to etch steps.
  • Analyse etch results using SEM, AFM, profilometry, ellipsometry, and optical inspection.
  • Conduct DOE experiments to improve process robustness and manufacturability.
  • Drive defect reduction initiatives related to etch damage, residues, and sidewall passivation.
  • Work closely with lithography, epitaxy, CMP & integration engineers, support engineering teams with etch-related design feedback.

 

Skills, Knowledge and Expertise

  • Bachelor’s or Master’s degree in Materials Science, Electrical Engineering, Chemical Engineering, Physics, or a related field.
  • 3+ years of hands-on experience in wet etch and/or dry etch process engineering (semiconductor or display industry).
  • Strong understanding of plasma etching physics and/or wet chemical etch mechanisms.
  • Direct experience with MicroLED or LED fabrication and/or IIIV materials would be an advantage.

Plessey is working with world leaders in consumer technology, who are paving the way with innovative next-generation Augmented Reality and wearable applications, based on advanced microLED display solutions.

Challenging existing display technologies, microLEDs are propelling forward a vast, yet stagnated market, changing the way we interact with our devices, both for information and entertainment.

Drawing on over a decade of semiconductor and optoelectronics expertise, Plessey has developed an award-winning, unique, and proprietary GaN-on-Silicon platform and monolithic process at its state-of-the-art manufacturing facility.

Life at Plessey

For more information, visit www.plesseysemiconductors.com/careers.

The Benefits

Cycle to work scheme

Group personal pension plan and life assurance

28 days holiday plus bank holidays

Subsidised gym and subsidised canteen

Private health and dental schemes

Free on-site parking

Discretionary Bonus Scheme

Employee Assistance Programme

Free fruit and hot drinks

Employee referral scheme

Technology & innovation awards programme

Staff
events

Testimonials

Jacquiline, Principal Process Engineer

"Working with Plessey has opened many learning opportunities for me especially in R&D side of things. Most of my working experience has been with the manufacturing and product transfers. Here at Plessey, I get to be involved in the actual development of new technologies. Also, I am learning not just Lithography, but the whole process itself. It's been a great experience so far."

Ross, Device Engineer

"Working for Plessey allows me to continually deepen my understanding of phenomena and characterisation techniques that are not just specific to uLED displays, but apply to various applications within the semiconductor industry. With Plessey having a FAB on site, there are a large range of amicable colleagues within reach who specialise in fields across the process, starting from MOCVD specialists for GaN to experts in device testing and solid-state physics."

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