III-V Photonics Design Engineer – Active Devices

Salience Labs; Abingdon; On-site; GBP 90,000 - 120,000; Full time

Job summary

Salience Labs is developing optical circuit switching technology for AI infrastructure in the UK. You will join a multi-disciplinary research team to develop III-V active components for integration with silicon photonics, taking devices from epitaxial stack to fabrication with external partners, through to characterisation and qualification.

You will contribute to device design, mask layout, and testing, collaborate with process, test, and packaging teams, and help scale the technology while

Qualifications

• PhD or Master’s with extensive hands-on III–V devices experience.
• Experience taking III-V devices from concept to design, fabrication and test.
• Strong understanding of laser/ amplifier physics and thermal effects.
• Experience with epitaxy/fabrication, and external foundry collaboration.
• Experience with test automation and data analysis.

Responsibilities

• Design and modelling of III-V active devices including epitaxial layer structure and optical mode.
• Define device specifications translating system requirements into design targets.
• Assist mask design, tape-outs and design-of-experiment splits.
• Support fabrication runs with external epitaxy and foundry partners.
• Contribute to characterisation strategy at wafer, chip and PIC levels.
• Analyse test data and iterate designs to close performance gaps.
• Collaborate with packaging/reliability engineers on burn-in and qualification.
• Share knowledge and onboard new team members.

Skills

Team collaboration

Communication

Critical thinking

Attention to detail

Self-motivation

Education

PhD in physics/photons (2+ yrs)

Master's with 4+ yrs experience

Tools

Lumerical

Cadence Virtuoso

COMSOL

Python

MATLAB

Job description

Salience Labs is developing optical circuit switching technology for AI infrastructure in the UK. You will join a multi-disciplinary research team to develop III-V active components for integration with silicon photonics, taking devices from epitaxial stack to fabrication with external partners, through to characterisation and qualification.

You will contribute to device design, mask layout, and testing, collaborate with process, test, and packaging teams, and help scale the technology while