Senior Thermal Simulation Engineer for MicroLED & CMOS

Plessey; Plymouth; On-site; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Pension scheme

Private medical & dental insurance

28 days’ holiday + bank holidays

Free onsite meals

Onsite gym

Relocation support

Visa support available

Job summary

Plessey in Plymouth, UK invites applications for Senior Thermal Simulation & Modelling Engineer in our R&D team. You will own the thermal behavior of microLED-on-CMOS devices using COMSOL Multiphysics, shaping device design and manufacturing choices.

You’ll build full-stack thermal models, analyze heat flow, predict hotspots, and feed results into layout and co-simulation. Collaboration across packaging and optical design will be common, with opportunities to extend into related R&D topics.

Qualifications

• Hands-on thermal simulation with COMSOL Multiphysics.
• Strong heat-transfer fundamentals: conduction, interface resistance, transient behaviour.
• Experience with semiconductor devices and CMOS circuits.
• Proven ability to validate models with experimental data.
• Clear communication of technical results.

Responsibilities

• Build COMSOL thermal models of the full stack: microLED, bond, CMOS backplane and package.
• Model pixel self-heating, bond thermal resistance and hot spots, and their impact on efficiency, wavelength and lifetime.
• Simulate CMOS power dissipation and feed thermal limits into layout and electro-thermal co-simulation.
• Run parametric studies to guide pixel pitch, drive scheme, bonding and materials.
• Simulate etch processes and microlens designs to support device and optical design.
• Validate models against measured data and turn results into clear design rules.

Skills

Heat transfer fundamentals

Communication of technical results

Semiconductor devices & CMOS circuits

Model validation with experimentalData

Education

Physics or Electronic Engineering degree

Tools

COMSOL Multiphysics

Job description

Plessey in Plymouth, UK invites applications for Senior Thermal Simulation & Modelling Engineer in our R&D team. You will own the thermal behavior of microLED-on-CMOS devices using COMSOL Multiphysics, shaping device design and manufacturing choices.

You’ll build full-stack thermal models, analyze heat flow, predict hotspots, and feed results into layout and co-simulation. Collaboration across packaging and optical design will be common, with opportunities to extend into related R&D topics.