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Plessey Semiconductors Ltd · 7 hours ago

Senior Process Engineer

Plymouth

Full-time

Onsite

Mid, Senior Level

3+ years exp

Plessey Semiconductors Ltd is a leading MicroLED specialist with a long history of innovation. They are seeking a Senior Process Engineer to develop, optimise, and sustain etching processes for MicroLED device fabrication, focusing on high-resolution pixel patterning and defect reduction.

ElectronicsManufacturing

H1B Sponsored

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

Qualification

Wet etch process engineeringDry etch process engineeringPlasma etching physicsMicroLED fabricationIIIV materials experienceMaterials Science degreeElectrical Engineering degreeChemical Engineering degreePhysics degree

Required

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

Preferred

Direct experience with MicroLED or LED fabrication and/or IIIV materials would be an advantage

Benefits

Pension scheme

Private medical & dental insurance

28 days’ holiday + bank holidays

Free onsite meals

Onsite gym

Relocation support

Visa support available

Company

Plessey Semiconductors Ltd

Plessey is a British high-tech company operating in the field compound semiconductors.

Founded in 2000

Plymouth, Plymouth, GBR

201-500 employees

https://plesseysemiconductors.com

Funding

Current Stage

Growth Stage

Total Funding

$1.7M

Key Investors

SBRI Healthcare

2025-08-20Acquired

2013-09-01Grant· $1.7M

Leadership Team

David Hayes

CEO

Mike Snaith

Chief Operating Officer

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Company data provided by crunchbase