About Plessey
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, optical computing, and optical interconnects.
Join us to work on breakthrough technologies shaping the future of light-based technology and computing.
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.
Location
Located at our head office and state-of-the-art fabrication facility in Plymouth.
About the Role
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 I²C.
- Experience working with laboratory bench instruments such as power supply units (PSUs), oscilloscopes, pattern generators and multimeters.
- Strong analytical mindset with attention to detail.
- Ability to work independently with minimal supervision.
Advantage
- Experience with NI TestStand for automated test environments.
- Background or practical experience in semiconductor device testing.
- Experience analysing large datasets and developing mathematical models for device behaviour and degradation.
- Familiarity with reliability testing methodologies (e.g., lifetime or stress testing).
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