Senior Optical Process Engineer — FPY & Testing Lead

ASML; Wilton (CT); On-site; USD 119,000 - 174,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401k plan with company match

Vacation leave and paid holidays

Job summary

ASML Wilton is seeking a Senior Process Engineer to own functional testing and inspection processes within the Wilton Factory Optics team. You will drive FPY, establish stable processes, and lead RCA and 6P readiness to improve stability, throughput, and yield.

Responsibilities include evaluating new fixtures, tools, and testing methods while collaborating with cross-functional teams—Quality, Maintenance, and Equipment Engineering—to balance production needs with long-term process control.

Qualifications

• BS, MS, or PhD in Mechanical, Optical, Materials, or related engineering field.
• Minimum 5 years of experience in optical fabrication and functional testing and inspection.
• Experience in tooling mechanics, inspection methods, functional testing methods, and process development.
• Demonstrated ability in structured problem solving, data analysis, RCA, and process improvement.

Responsibilities

• Define and optimize functional testing and inspection processes, parameters, tooling, fixturing, and measurement methods.
• Ensure measurement stability and consistent testing and inspection results across equipment, operators, and shifts.
• Lead introduction and qualification of new fixtures, tools, software, manual processes, and equipment upgrades.
• Analyze functional testing and inspection data and translate findings into actionable process improvements.
• Establish process windows, capability targets, and long-term monitoring strategies.
• Lead structured RCA using statistical methods and ensure corrective actions are verified and sustainable.

Skills

FPY optimization

RCA

6P readiness

Data analysis

Leadership

Cross-functional collaboration

Education

BS/MS/PhD in Mechanical/Optical/Materials

5+ years optical fabrication & testing

Tools

JMP

Minitab

Spectrometry equipment

Electrical/test equipment

Job description

ASML Wilton is seeking a Senior Process Engineer to own functional testing and inspection processes within the Wilton Factory Optics team. You will drive FPY, establish stable processes, and lead RCA and 6P readiness to improve stability, throughput, and yield.

Responsibilities include evaluating new fixtures, tools, and testing methods while collaborating with cross-functional teams—Quality, Maintenance, and Equipment Engineering—to balance production needs with long-term process control.