Plessey has a long history of innovation. Founded in 1956, we have evolved from one of Europe’s earliest semiconductor pioneers into the world’s most advanced MicroLED specialist. Over the decades, Plessey has built a first class, fully integrated platform designing, manufacturing, and engineering next-generation display technologies entirely in-house. This end to end capability, combined with our strong IP portfolio, uniquely positions us to lead the scaling of MicroLEDs from lab innovation to high-volume production.
Our future is even brighter. We believe MicroLEDs will define the next era of technology—powering ultra-efficient AR/VR displays, driving optical processors that make AI faster and more sustainable, and enabling devices yet to be imagined. With our unique expertise and talented team, we are positioned to lead this transformation.
It’s an exciting time to join us: Plessey has recently been acquired by Haylo Labs, accelerating our growth and opening new opportunities.
Our Values
* Commitment
* Care
Location
Located at our state-of-the-art fabrication facility in Plymouth.
About the Role
Are you ready to shape the future of next-generation devices? We are looking for a Principal Device Simulation Engineer to join our team of innovators pushing the limits of MicroLED and optical compute technologies. Your simulations will help validate theories, explore design trade-offs, and inform the next generation of MicroLED and optical compute technologies.
Key Responsibilities
* Lead the simulation, modelling, and analysis of semiconductor or photonic devices across a range of technologies.
* Develop and validate device models to support design, optimisation, and experimental work.
* Collaborate closely with process integration, optics & device engineering to provide actionable insights from simulation results.
* Mentor and guide junior engineers on simulation methodologies and best practices.
* Evaluate and implement new simulation tools and techniques to enhance modelling capabilities.
* Present technical findings to internal stakeholders and contribute to technology strategy.
Experience & Attributes
* PhD in Physics, Electrical Engineering, Materials Science, or a related field.
* This role requires deep knowledge of device physics, semiconductor simulation tools, and advanced analytical methods.
* Direct knowledge of advanced simulation tools ( examples include Silvaco ATLAS/Blaze, SiLENS, COMSOL, Optiwave)
* Experience interpreting simulation results and providing guidance to experimental/device teams.
* Direct knowledge of simulating ultra-high speed III-V light emitting devices.
* Knowledge of ultra-high-speed devices or high-frequency applications.
* Strong programming or scripting skills for simulation automation (Python, MATLAB, etc.).
* Strong analytical and problem-solving skills.
* Excellent written and verbal communication skills.
* Ability to work collaboratively in a multidisciplinary team.
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