Senior Process Development Engineer

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 and optical interconnects.

Join us to work on breakthrough technologies shaping the future of light-based technology and computing

Location

Based in Plymouth

Our Values

Lead

We don’t follow industry trends; we create them, pushing boundaries and setting standards others aspire to. Every team member has the power to make decisions, drive change, and deliver excellence. We support each other, challenge one another for the best solutions, and lead by example. Together, we build industries and technologies that shape the future and scale toward our vision of the next era of computing.

Grow

We expand our capabilities every day — deepening our expertise, improving how we work, and pushing the boundaries of what’s possible. Curiosity fuels us: we question assumptions, explore new ideas, and innovate with light-based technologies. By investing in and empowering our people, we strengthen Plessey’s impact and help shape the future of optical technology.

Trust

We operate like a family—honest, reliable, and supportive. We have each other’s backs, own our actions, and uphold the highest standards of integrity and safety. We trust each other to deliver, our customers to challenge us, and our expertise to guide the way. Together, trust enables the collaboration essential for breakthrough innovation and lasting impact.

About the Role

Join a fast-growing Process Development team at the forefront of MicroLED and Optical Interconnect innovation — technology that's shaping the next generation of displays and AI infrastructure.

You’ll spend around 60% of your time hands‑on in our state‑of‑the‑art cleanroom, driving process development that goes straight into product. The other 40% is where you shape what happens next — planning experiments, analysing data, and presenting insights that influence decisions at management level.

Key Responsibilities

• You will work on all stages of process development, defining process architecture, developing process modules, working with process development tool owners to develop and optimise pixel performance.
• Constantly seek out and implement opportunities for innovation and improvement in the products and processes.
• Participate in risk assessments and design reviews.
• Identify the requirements for new tooling to support the development roadmap, including defining process recipe specifications and aligning with the process tool owner.
• Leverage your R&D and process development experience to drive progress within a high‑performing, results‑oriented team.

Skills, Knowledge and Expertise

• A PhD in Physics, Electrical/Electronic Engineering, Materials Science, or a related discipline focused on III–V semiconductor devices, or a bachelor’s degree with at least three years of relevant industry experience.
• Hands on experience of developing and optimising InP or GaAs semiconductor device fabrication processes in a clean room environment.
• Knowledge of semiconductor device physics.
• Broad experience in semiconductor process techniques, including but not limited to lithography (stepper and mask aligner), etch (RIE, ICP and wet etch), CVD, PVD, Evaporation, ALD, IBD.
• Design of Experiments and statistical analysis techniques.
• Working knowledge of CAM systems and SPC.
• Ability to communicate clearly, design decisions to cross‑functional teams.
• Experience of risk analysis and design review processes.
• Experience with JMP or Python for data analysis would be an advantage.

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