Technical Lead in Plymouth

We’re building the hardware foundation for next-era computing. Plessey is a world-leading technology company driving the next generation of photonic devices and systems. With over 70 years of innovation, we combine research, materials science, process engineering, and manufacturing under one roof. We’re recognised as a global authority in microLED displays, optical computing, and optical interconnects. Join us to work on breakthrough technologies shaping the future of light-based technology and computing.

Location: Located at our head office and state-of-the-art fabrication facility in Plymouth.

About the Role:

• Develop and optimise III-AsP epitaxial growth processes using MOCVD for advanced device structures, ensuring high crystal quality, low defect density, and scalable manufacturability.
• Design, plan, and execute Design of Experiments (DOE) to systematically optimise MOCVD growth parameters.
• Analyse epitaxial characterisation data and identify key process drivers influencing crystal quality, interface abruptness, and electrical performance.
• Collaborating with R&D, take full technical ownership of MOCVD process development, from early‑stage epitaxial structure design through qualification and transfer to high‑volume manufacturing.
• Define and establish robust MOCVD process windows, to ensure stable and repeatable epitaxial growth.
• Provide hands‑on support when required for MOCVD reactor operation, including process setup, calibration, troubleshooting, and optimisation of growth conditions.
• Serve as the go‑to technical expert to advise and support the team of experienced epitaxy engineers.
• Provide technical leadership within the MOCVD epitaxy module, supporting engineers in best practices for growth, reactor operation, and process control.
• Mentor and develop junior engineers.
• Document and update best practice procedures for troubleshooting and training junior engineers.
• Research current industry and academic trends in microLED technology, AR/VR, visual light communication, and optical computing from publications, conference proceedings, and patents.
• Contribute to technology roadmap development.
• Facilitate strong collaboration across device, integration, and manufacturing teams.

Skills, Knowledge and Expertise:

• Proven experience involving AsP epitaxy for photonics including LEDs and uLEDs, edge emitting lasers, VCSELs, preferably on GaAs, preferably in the visible range.
• Experience in III‑V on Si/Ge and Si photonics is also of interest.
• Experience scaling R&D processes into manufacturing.
• Previous and direct experience with relevant epitaxy tools.
• Highly hands‑on and experimental mindset.
• Strong problem‑solving and troubleshooting ability.
• Comfortable working in lab and fab environments.
• Ability to translate device requirements into epitaxial structures.
• Ability to organise data to support the team in arriving at solutions efficiently, by focusing on appropriate issues.
• Commitment to continuous improvement operating environment.
• Proactive attitude and ability to work independently and take task ownership.