Principal Simulation Device Engineer

Plessey Semiconductors Ltd; Plymouth; On-site; GBP 85,000 - 120,000; Full time

Job summary

Plessey Semiconductors Ltd in Plymouth seeks a Principal Device Simulation Engineer to lead simulation and modelling for next-generation photonic devices. You’ll validate models, guide experiments, and drive design trade-offs with cross-functional teams.

The role requires a PhD and deep knowledge of device physics, with hands-on experience in advanced simulation tools and programming for automation. Strong collaboration and communication are essential.

Qualifications

• PhD in a relevant field with deep device physics knowledge.
• Strong knowledge of semiconductor/photonic simulation tools and analytical methods.
• Experience interpreting simulation results and guiding experimental teams.

Responsibilities

• Lead simulation, modelling, and analysis of semiconductor/photonic devices.
• Develop and validate device models to support design and experiments.
• Collaborate with process integration and optics/device engineering for actionable insights.
• Mentor junior engineers on simulation methodologies and best practices.
• Evaluate new simulation tools to enhance modelling capabilities.
• Present findings to stakeholders and influence technology strategy.

Skills

Python scripting

MATLAB

Analytical thinking

Team collaboration

Education

PhD in Physics / Electrical Engineering / Materials Science or related field

Tools

Silvaco ATLAS/Blaze

SiLENS

COMSOL

Optiwave

Job description

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

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 interconnect technology. Your simulations will help validate theories, explore design trade-offs, and inform the next generation technology.

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.