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ASML Wilton is seeking a Senior Process Engineer to join the Optical Fabrication team with primary ownership of Generating & Polishing (GnP) processes. This role is responsible for process development, stabilization, and daily performance across grinding and polishing operations. The position requires a deep technical understanding of optical fabrication, strong analytical capability, and the ability to drive sustainable improvements in a fast-paced production environment. The engineer will directly support output, yield, and quality targets—including improving First Pass Yield (FPY) through stable, predictable, and well controlled process behavior. This role requires a proactive engineering mindset: anticipating issues before they impact production, driving structured 6P readiness, performing thorough RCA, and continuously evaluating new technologies and deterministic tools to strengthen long-term process control. This is not a reactive support role; the expectation is ownership, foresight, and continuous improvement.
Ensuring consistent behavior across tools and shifts
Includes control of pitch and pad behavior, slurry delivery, plate geometry, pressure and weight control, and other factors influencing removal rate, figure, roughness, and defectivity
Lead the introduction and qualification of new pad materials, slurry chemistries, pitch recipes, and machine upgrades
Convert interferometry, profilometry, and surface inspection data into actionable decisions
Establishing strong process control: defining process windows, capability targets, and long-term monitoring systems
Use JMP or Minitab to identify variation, drift, and chronic stability risks
Maintaining process specifications, work instructions, and standard work
Driving alignment across production and support teams
Collaborate daily with production technicians, supervisors, metrology, quality, equipment engineering, and maintenance
Building process stability that prevents rework and FPY loss
Detecting and eliminating sources of variation impacting FPY and yield
Leading structured RCA using statistical and analytical methods
Ensuring corrective actions are verified, embedded, and sustainable
Owning full 6P readiness for process, material, or equipment changes
Proactively seek, evaluate, and integrate deterministic process control methods, advanced metrology and insitu monitoring tools, next generation pad, pitch, slurry, and consumable technologies, and equipment or software capabilities that improve stability, predictability, and throughput
Requirements
BS, MS, or PhD in Mechanical, Optical, Materials, or related engineering field
Minimum 5 years of experience in optical fabrication, precision machining, grinding, or polishing
Experience in grinding mechanics, polishing processes, metrology interpretation, and process development
Demonstrated ability in structured problem solving, data analysis, RCA, and process improvement
Strong understanding of grinding and polishing mechanics and material removal behavior
Proficiency with interferometry, profilometry, and surface inspection tools
Experience using JMP, Minitab, or equivalent statistical software
Strong communication, cross functional collaboration, and leadership in a production environment
Ability to manage multiple priorities under time sensitive conditions
Demonstrated capability in 6P readiness, structured RCA, and verification driven corrective action