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Senior Process Engineer - Optical Fabrication

United States, Wilton · Job Posted June 10, 2026
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Job Description

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.

Job Responsibility

  • Defining and optimizing process parameters
  • Ensuring removal rate stability
  • Selecting consumables
  • Understanding machine behavior
  • Managing polishing performance, conditioning strategies, coolant control, and subsurface damage removal
  • 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

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