Plessey Semiconductors

Technical Lead Epitaxy Department: R&D Employment Type: Full Time Location: Plymouth We are seeking a hands-on Epitaxy Tech lead to drive the development, optimisation, and production support of epitaxial growth processes for our MicroLED technology. You will report into R&D and will drive and execute the epitaxial process development, reactor performance, and material quality, while working closely with device, integration, and manufacturing teams to enable high-performance devices and scalable manufacturing. This role combines technical leadership with hands-on work, using your expertise to directly advance our technology. Key Responsibilities Develop and optimise III-AsP epitaxial growth processes using MOCVD for advanced device structures, ensuring high crystal quality, low defect density, and scalable manufacturability. Define suitable procedures/techniques for material characterisation. 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, you will 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. There will be a team of experienced Epitaxy Engineers but as one of the technical experts you will be the go to person to advise and support. 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 procedure to be used for troubleshooting and training junior engineers. Research on current trends in the industry and academia concerning microLED technology, AR/VR, visual light communication and optical computing from publications, conference proceedings and patents. Contribute to technology roadmap development. 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 in order to support the team to arrive at solutions efficiently, by focusing on appropriate issues. Be committed and contribute towards a continuous improvement operating environment. Proactive attitude and able to work independently and task ownership. Benefits Pension scheme Private medical & dental insurance 28 days' holiday + bank holidaysFree onsite meals Onsite gym Relocation support Visa support available

Plessey Semiconductors in Plymouth is looking for a Technical Lead Epitaxy to drive the development and optimization of growth processes for MicroLED technology. This hands-on role involves working closely with the R&D team to ensure high performance in device fabrication. The ideal candidate will have proven experience in AsP epitaxy, strong problem-solving skills, and a commitment to continuous improvement. The position offers various benefits including a pension scheme, private medical insurance, and onsite gym facilities.

Plessey Semiconductors is seeking a Senior Infrastructure & Platform Engineer in Plymouth to enhance its infrastructure capacity and cloud presence. You'll join an experienced team focusing on modern infrastructure practices, including automation and DevOps. Key responsibilities involve managing Windows Server and VMware environments, Kubernetes clusters, and AWS services, while ensuring secure and efficient infrastructure operations. The role offers various benefits including private medical insurance and onsite gym facilities.

Senior Infrastructure & Platform Engineer Department: Operations Employment Type: Full Time Location: Plymouth Description This role exists to strengthen the depth and resilience of Plessey's infrastructure capability. We operate a mature on premises estate spanning virtualisation, hyper converged infrastructure, container platforms, and enterprise identity-and are actively expanding our cloud presence to support business critical platforms. You will work alongside an experienced infrastructure team, bringing senior level platform knowledge and the ability to operate in a modern, DevOps informed way-using code, automation, and pipelines to build and operate infrastructure reliably and at scale. This is not a pure DevOps role. We need someone with strong infrastructure fundamentals who works in a structured, automated way and has the appetite to grow our cloud and IaC capability alongside the team. Key Responsibilities Administer and support Windows Server environments, including Hybrid Azure AD, Group Policy, DNS, and DHCP across the estate. Manage VMware virtualisation platforms. Support the ongoing Nutanix HCI implementation, including post migration operational support. Maintain and develop on premises Kubernetes clusters supporting manufacturing execution systems. Maintain Linux based infrastructure underpinning core services and container workloads. Support Intune and Microsoft 365 endpoint and platform configuration. Manage and grow AWS environments, including platforms supporting YieldWerx and other cloud hosted services. Develop and maintain Infrastructure as Code using Terraform and/or Bicep. Build and maintain CI/CD pipelines using GitHub Actions to automate infrastructure deployment and configuration. Ensure cloud resources are provisioned securely, consistently, and cost effectively. Contribute to security standards, patching schedules, and system hardening across all platforms. Version control infrastructure configuration and changes using Git. Produce and maintain clear, accurate technical documentation. Provide senior technical guidance and share knowledge to reduce operational single points of failure. Participate in on call and incident response activities as required. Skills, Knowledge and Expertise Proven experience in a senior infrastructure engineering role. Strong hands on expertise with Windows Server, Active Directory, and Hybrid Azure AD. Experience administering VMware vSphere in production environments. Solid Linux administration experience (RHEL, Ubuntu, or equivalent). Practical, hands on Kubernetes experience including deployment, operations, and troubleshooting. Demonstrable AWS experience including EC2, S3, VPC, IAM, and core platform services. Working knowledge of Infrastructure as Code using Terraform. Experience with CI/CD tooling such as GitHub Actions or equivalent platforms. Strong scripting capability in PowerShell, Bash, or Python. Confident working with Git and version controlled infrastructure. Takes ownership and drives issues through to resolution independently. Works methodically under pressure and effectively balances competing priorities. Actively shares knowledge and reduces reliance on single points of expertise. Communicates clearly with both technical and non technical stakeholders. Comfortable working in an environment transitioning from traditional on prem infrastructure to a more modern, automated, cloud centric model. Advantage Experience with Nutanix HCI or similar converged infrastructure platforms. Microsoft Azure experience (IaaS, PaaS, Intune, M365). Familiarity with Aruba networking or Fortinet firewall platforms. Relevant certifications: AWS SysOps Administrator, CKA, AZ 104, or equivalent. Experience with monitoring and observability tooling (Prometheus, Grafana, or similar). Background in a manufacturing, semiconductor, or regulated environment. Benefits Pension scheme Private medical & dental insurance 28 days' holiday + bank holidays Free onsite meals Onsite gym Relocation support

Senior/Principal Sub Fab Engineer Department: Engineering Employment Type: Full Time Location: Plymouth Plessey are seeking a Senior Sub Fab Engineer with clear progression potential into a Principal-level role within the Equipment Engineering Department. This is a key technical position within a rapidly expanding facility, offering the opportunity to develop into a broader technical leadership role over time. We are not seeking previous semiconductor or sub fab experience specifically. Instead, we are looking for strong electro mechanical engineers from high tech manufacturing or similar complex engineering environments who are confident working with sophisticated equipment and enjoy solving challenging technical problems. The role sits within an environment where Engineering and Manufacturing teams work closely together to support continued site growth and development. The working hours for this role are Monday - Friday, 8am - 4:30pm. Key Responsibilities Manage all activities within the sub-fab area to provide a continuous and safe supply of gases and chemicals to wafer fab equipment Lead and support cross functional engineering projects aimed at improving tool performance, reliability, and automation Design and implement custom hardware and sensor integrations to enhance tool functionality and monitoring Oversee and maintain gas cabinets (housing gas bottles for production tools), vacuum pumps, by product abatement systems, and chemical (acid and solvent) bulk dispense systems Own assigned tools and equipment, ensuring tasks are completed safely and efficiently. Perform routine chemical and gas system checks, maintain and troubleshoot equipment, replace supplies, and carry out scheduled maintenance Maintain and update relevant databases (e.g., pumps, PPE inventory) and coordinate repairs or refurbishments as required Lead deployment and adoption of FDC systems across new and existing fab tools, including installation, configuration, tool connectivity, and serving as the sub fab FDC point of contact while supporting engineering teams Offer out of hours support when required to maintain uptime and resolve critical issues Apply advanced fault finding and troubleshooting across electro mechanical, electrical, and electronic subsystems Collaborate with multidisciplinary teams on tool upgrades, retrofits, and performance optimisation initiatives Contribute to projects involving data acquisition, networking, and system interfacing to improve fab wide diagnostics and automation Occasionally perform forklift operations and ensure all tasks are carried out safely and in compliance with PPE and safety protocols Skills, Knowledge and Expertise Minimum HNC in Electrical or Electronic Engineering (preferred), or Mechanical Engineering with strong electronics experience Solid foundation in mechanical engineering principles, with the ability to understand and work with complex electromechanical systems 10+ years' experience in a high tech maintenance environment, demonstrating senior level technical knowledge and leadership Proven troubleshooting and analytical skills, particularly in electronics, system diagnostics, and fault detection Experience with data driven diagnostics, SPC charting, and implementing continuous improvement initiatives High level of computer literacy, including Microsoft Office tools, for reporting, analysis, and project management Ability to work independently, manage multiple priorities, and drive operational and process improvements Strong team working, mentoring, and coaching skills Demonstrated critical thinking, problem anticipation, and the ability to take charge when issues arise Experience contributing to audits, project management, and high level meetings, providing informed technical input and guidance Benefits Pension scheme Private medical & dental insurance 28 days' holiday + bank holidays Free onsite meals Onsite gym Relocation support Visa support available

Plessey Semiconductors seeks a Principal Process Development Engineer in Plymouth. You will lead the innovation and optimization of fabrication processes for MicroLED and Optical Computing devices. A PhD in a relevant field and over 3 years of experience in semiconductor process development are essential. Key responsibilities include defining process architecture and driving product improvements. Benefits include a pension scheme, private medical insurance, and onsite facilities. Join a fast-growing team and make an impact in advanced technology development.

Software Engineer Department: Engineering Employment Type: Full Time Location: Plymouth Description We are looking for a senior Software Engineer to support the development of automated reliability and characterisation test systems for MicroLED devices. The role combines test software development, instrument control, and data analysis, supporting both the execution of reliability campaigns and the analysis of device performance and degradation. The engineer will work closely with hardware engineers and test engineers to develop software tools that control laboratory equipment, automate test procedures, and analyse large datasets generated during device testing. Key Responsibilities Develop and maintain automated test software for reliability and characterisation systems. Interface with laboratory instruments and test hardware using LabVIEW, C++, and Python. Support the execution of device reliability campaigns and engineering experiments. Develop tools for data collection, processing, and analysis. Work with engineering teams to interpret results and identify device behaviour trends. Contribute to improving the automation and robustness of internal test platforms. Skills, Knowledge and Expertise Master's degree in Physics, Electronic Engineering, or a related discipline. Proficiency in LabVIEW and C++. Working knowledge of Python for data processing and analysis. Hands on experience with communication protocols such as SPI and I C. Experience working with laboratory bench instruments such as power supply units, oscilloscopes, pattern generators and multimeters. Strong analytical mindset with attention to detail. Ability to work independently with minimal supervision. Benefits Pension scheme Private medical & dental insurance 28 days' holiday + bank holidays Free onsite meals Onsite gym Relocation support

Principal Process Development Engineer Department: R&D Employment Type: Full Time Location: Plymouth Description Seeking a Principal Process Development Engineer with deep expertise in process development, strong analytical and problem solving skills, hands on experience with advanced fabrication and characterization techniques, and a proven ability to lead cross functional R&D initiatives. Join a fast growing Process Development team pushing the boundaries of innovation in MicroLED and Optical Computing. Around 60% of your time will be spent in a state of the art cleanroom advancing process development, and the other 40% on planning, analysing data, and presenting insights to management. Key Responsibilities Lead the development and optimisation of fabrication processes for MicroLED and Optical Computing devices. 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 MicroLED and Optical Compute 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 degree in either Physics, Electrical/Electronic Engineering, Material science or any relevant subject covering the field of III V semiconductor devices. 3+ years of extensive experience in process development within semiconductor, display, or related high tech industries. Expert knowledge of MicroLED or Photonics and/or Optical compute technologies. Hands on experience of developing and optimising III V, ideally III - N, semiconductor device fabrication processes in 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. Expert experience of LED performance matrix and its measurement techniques such as IV response, Electroluminescence, EQE will be advantageous. 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. Benefits Pension scheme Private medical & dental insurance 28 days' holiday + bank holidays Free onsite meals Onsite gym Relocation support Visa support available