Senior Process Engineer
UK Visa Sponsorship Analytics
Above analytics are generated algorithmically based on job titles and may not always be the same as the company's job classification. You can also check detailed occupation eligibility, and salary criteria on our UK Visa Eligible Occupations & Salary Thresholds page.
Disclaimer: Hunt UK Visa Sponsors aggregates job listings from publicly available sources, such as search engines, to assist with your job hunting. We do not claim affiliation with Plessey Semiconductors Ltd. For the most up-to-date job details, please visit the official website by clicking "Apply Now."
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-generation 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
Location
Located at our head office and state-of-the-art fabrication facility in Plymouth.
About the Role
The Thin Film Ellipsometry Process Engineer is responsible for developing, optimising, and controlling thin-film optical measurement and characterisation processes to support high-yield, high-performance semiconductor device fabrication. This role focuses on ellipsometry-based metrology for deposited thin films across development and production environments.
Key Responsibilities
- Develop, qualify, and optimise ellipsometry measurement processes for thin films (thickness, refractive index n/k, composition, and uniformity).
- Support R&D and new materials development by providing accurate thin-film characterisation, measurement development, and data analysis.
- Own and maintain ellipsometry process recipes, optical models, and control strategies.
- Provide accurate metrology feedback to thin-film deposition processes (e.g., PVD, CVD, ALD).
- Analyse film properties including thickness mapping, optical constants, and process-induced variation.
Skills, Knowledge and Expertise
- Bachelor’s or Master’s degree in Materials Science, Physics, Electrical Engineering, or related field.
- 3–7+ years of experience in semiconductor or advanced thin-film processing environments.
- Strong hands-on experience with spectroscopic ellipsometry.
- Solid understanding of thin-film optics, dispersion modelling, and multilayer analysis.
- Experience correlating ellipsometry data with complementary techniques (e.g., XRD, AFM, profilometry).