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.
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.
- Develop and refine optical models for multilayer thin-film stacks.
- Utilise statistical process control (SPC) to monitor tool performance and process stability.
- Conduct root cause analysis for measurement drift, model instability, or yield excursions related to film properties.
- Collaborate with equipment and process engineering teams to maintain and improve metrology tool performance.
- Support new product introduction (NPI) through film characterisation, DOE planning, and process transfer.
- Generate technical reports and present findings to engineering and management teams.
- Ensure compliance with safety and cleanroom protocols.
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).
- Strong data analysis and problem-solving skills.
- Strong ownership mentality with the ability to work independently in a fast-paced environment.
- Adaptable and comfortable with evolving priorities and rapid change.
- Excellent cross-functional collaboration skills (working effectively with process, equipment, R&D, and manufacturing teams).
- Clear and confident communicator, able to present technical findings to both technical and non-technical audiences.
- Experience with compound semiconductor or dielectric thin films would be an advantage.
Perks & Benefits
- Pension scheme
- Private medical & dental insurance
- 28 days’ holiday + bank holidays
- Free onsite meals
- Onsite gym
- Relocation support
- Visa support available