About us 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- 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 Innovation Collaboration Commitment Care About the Role You will be part of a high-performing team advancing innovation in defect detection and quality assurance. You’ll gain hands-on experience with cutting-edge inspection tools, develop deep technical expertise, and directly contribute to elevating product performance and reliability. Location Based at our manufacturing facility in Plymouth, UK. Key Responsibilities Define and implement pass/fail criteria for critical defect inspections across incoming, inline, and outgoing stages Defect Analysis Tools leadership and maintain a comprehensive defect catalogue/library Create and update documentation and specifications for production and manufacturing teams Lead root cause investigations for new or complex defects Champion best practices in defect inspection and sampling methodologies Train and mentor operators and technicians on inspection standards Partner with Defect Engineers for both optical and SEM-based defect analysis and reviews Experience & Attributes Diploma or Degree in Engineering or a related field Proven experience in semiconductor or LED manufacturing Skilled in working with microscopes and inspection tools in cleanroom environments Familiarity with failure analysis methods (FIB, SEM, EDX) Proficiency in Microsoft Office (Excel, Word, PowerPoint) A keen eye for detail, strong problem-solving mindset, and a collaborative approach Work Pattern Monday to Friday, 08:00 – 16:30 One weekend in three (with the Thursday before and Tuesday after as time in lieu) Includes bank holidays and weekends when they fall within your shift pattern