Senior Process Engineer - Optical Fabrication

Job Summary

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.

• Define and optimize process parameters, ensuring removal rate stability, selecting consumables, and understanding machine behavior.
• Manage polishing performance, conditioning strategies, coolant control, and subsurface damage removal while ensuring consistent behavior across tools and shifts.
• Control pitch and pad behavior, slurry delivery, plate geometry, pressure and weight control, 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.
• Establish strong process control: define process windows, capability targets, and long‑term monitoring systems.
• Use statistical tools (JMP or Minitab) to identify variation, drift, and chronic stability risks, ensuring processes are robust, documented, and repeatable.
• Maintain process specifications, work instructions, and standard work while driving alignment across production and support teams.
• Collaborate daily with production technicians, supervisors, metrology, quality, equipment engineering, and maintenance.
• Build process stability that prevents rework and FPY loss.
• Detect and eliminate sources of variation impacting FPY and yield.
• Lead structured RCA using statistical and analytical methods.
• Ensure corrective actions are verified, embedded, and sustainable.
• Own full 6P readiness for process, material, or equipment changes.
• Proactively seek, evaluate, and integrate deterministic process control methods, advanced metrology and in‑situ monitoring tools, next‑generation pad, pitch, slurry, and consumable technologies, and equipment or software capabilities that improve stability, predictability, and throughput.
• Qualified candidates must be legally authorized to access controlled technology as defined by U.S. Export Administration Regulations.

• 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.
• Work authorization in the United States without the need for employer sponsorship.

• 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.

Work includes time spent on the fabrication floor, interaction with metrology equipment, and periods of standing or walking. The role may require lifting materials up to 20 pounds. Visual acuity for inspection tasks is required. The environment includes exposure to noise, vibration, and manufacturing equipment while wearing appropriate PPE.

ASML is an Equal Opportunity Employer that values and respects the importance of a diverse and inclusive workforce. It is the policy of the company to recruit, hire, train and promote persons in all job titles without regard to race, color, religion, sex, age, national origin, veteran status, disability, sexual orientation, or gender identity. We recognize that inclusion and diversity is a driving force in the success of our company.