Senior Process Engineer- Functional Testing & Inspection

ASML Holding; 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

Introduction to the role

ASML Wilton is seeking a Senior Process Engineer to join the Wilton Factory Optics team with primary ownership of functional testing and inspection processes. This role is responsible for the development, stabilization, and ongoing performance of automated and manual functional testing and inspection processes supporting optical manufacturing.

The Senior Process Engineer will directly contribute to output, yield, and quality targets, including First Pass Yield (FPY), by establishing stable, predictable, and well-controlled processes.

Success in this role requires strong technical and analytical skills, a proactive engineering mindset, and the ability to anticipate production risks before they impact performance. The engineer will drive structured 6P readiness, lead root cause analysis (RCA), and continuously evaluate new technologies and process improvements that strengthen long-term process control.

Role and responsibilities

The Senior Process Engineer will serve as a technical leader within Wilton Factory Optics, with end-to-end ownership of functional testing and inspection processes. Responsibilities include:

• 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.
• Identify and control environmental, tooling, fixturing, and equipment factors that influence functional testing and inspection output.
• Lead the 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.
• Use JMP, Minitab, or equivalent statistical tools to identify variation, drift, and chronic process stability risks.
• Maintain process specifications, work instructions, and standard work to ensure processes are robust, documented, and repeatable.
• Partner closely with production technicians, supervisors, cross-factory teams, Quality, Equipment Engineering, and Maintenance to balance immediate production needs with long-term process improvements.
• Identify and eliminate sources of variation that contribute to rework, FPY loss, and reduced yield.
• Lead structured RCA using statistical and analytical methods and ensure corrective actions are verified, implemented, and sustainable.
• Own 6P readiness for process, material, and equipment changes.
• Proactively evaluate new functional testing and inspection process control methods, advanced testing and inspection tools, next-generation technologies, and equipment or software capabilities that improve stability, predictability, and throughput.

Education and experience

• 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.

Skills

• Strong understanding of functional testing and inspection best practices and tooling mechanics for accurate measurements.
• Proficiency with manual and automated functional testing and inspection tools.
• Proficiency with spectrometry equipment required.
• Proficiency with electrical, pressure, and hardness testing equipment highly desired.
• Experience using JMP, Minitab, or equivalent statistical software.
• Strong communication, cross‑functional collaboration, and leadership skills 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.

Other information

• Work includes time on the fabrication floor, interaction with functional testing and inspection equipment, and periods of standing or walking.
• The role may require lifting materials up to 35 pounds.
• Visual acuity for inspection tasks is required.
• The work environment includes exposure to noise, vibration, and manufacturing equipment while wearing appropriate PPE.

Candidates must be legally authorized to work in the U.S. without sponsorship

The current base annual salary range for this role is currently: $118,875 - $174,350

Additional Responsibilities: There is potential for exposure to strong magnetic fields, high voltage and currents.

The current base annual salary range for this role is currently:

Pay scales are determined by role, level, location and alignment with market data. Individual pay is determined through interviews and an assessment of several factors that that are unique to each candidate, including but not limited to job‑related skills, relevant education and experience, certifications, abilities of the candidate and pay relative to other team members.

The Company offers employees and their families, medical, dental, vision, and basic life insurance. Employees are able to participate in the Company’s 401k plan. Employees will also receive eight (8) hours of vacation leave every month and (13) paid holidays throughout the calendar year.

All new ASML jobs have a minimum application deadline of 10 days.

This position requires access to controlled technology, as defined in the United States Export Administration Regulations (15 C.F.R. § 730, et seq.). Qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require ASML to proceed with candidates who are immediately eligible to access controlled technology.

Inclusion and diversity

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.

Request an Accommodation

ASML provides reasonable accommodations to applicants for ASML employment and ASML employees with disabilities. An accommodation is a change in work rules, facilities, or conditions which enable an individual with a disability to apply for a job, perform the essential functions of a job, and/or enjoy equal access to the benefits and privileges of employment. If you are in need of an accommodation to complete an application, participate in an interview, or otherwise participate in the employee pre‑selection process, please send an email to [e-mail] to initiate the company’s reasonable accommodation process.

Please note: This email address is solely intended to provide a method for applicants to initiate ASML’s process to request accommodation(s). Any recruitment questions should be directed to the designated Talent Acquisition member for the position.