Introduction
ASML US, including its affiliates and subsidiaries, bring together the most creative minds in science and technology to develop lithography machines that are key to producing faster, cheaper, more energy-efficient microchips. We design, develop, integrate, market and service these advanced machines, which enable our customers - the world’s leading chipmakers - to reduce the size and increase the functionality of their microchips, which in turn leads to smaller, more powerful consumer electronics. Our headquarters are in Veldhoven, Netherlands and we have 18 office locations around the United States including main offices in Chandler, Arizona, San Jose and San Diego, California, Wilton, Connecticut, and Hillsboro, Oregon.
Job Mission
ASML’s Wafer Alignment Sensor department in Wilton CT is seeking a Design Engineer to support and develop complex optical/photonic sensor systems used within ASML’s photolithography tools. These systems typically include light sources, detectors, optical/electro-optical components, fiber optics, electronics and signal processing software functioning in close collaboration with the rest of the lithography system. As a design engineer, you will design, develop, build and integrate optical sensor systems.
This position may require access to controlled technology, as defined in the Export Administration Regulations (15 C.F.R. § 730, et seq.). As a condition of employment, qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require the Company to proceed with candidates who are immediately eligible to access controlled technology.
Job Description
General
Use general Physics, Optics, Software knowledge and an understanding of the sensor systems and tools to develop optical alignment sensors in lithography machines
Have hands-on skills of building optical systems (e.g. imaging, testing, alignment, detector system, etc.)
Have strong data analysis skills to evaluate sensor performance and troubleshooting
Leadership
Lead executing activities for determining problem root cause, execute complex tests, gather data, and effectively communicate results on different levels of abstraction (from technical colleagues to high level managers)
Lead engineers in various competencies, eg software, electronics, equipment engineering, manufacturing engineering in support of feature delivery for alignment sensors
Problem Solving
Troubleshooting complex technical problems
Develop/debug data signal processing algorithms
Develop and execute test plans in order to determine problem root cause
Communications/Teamwork
Good communication skills during brainstorm/troubleshooting sessions
Good listening skills
Good analytical skills
Draw conclusions based on the input from different stakeholders
Capability to clearly communicate the information on different level of abstraction
Programming
Implement data analysis techniques into functioning MATLAB codes
Optimization skills
GUI building experience
Familiarly with LabView and Python
Some travel (up to 10%) to Europe, Asia and within the US can be expected
Scope / Level of Impact
JG07: Leads complex technical design work within a discipline or owns a module-level area requiring input from multiple engineers. Works autonomously on complex assignments and interfaces with suppliers or customers as part of a broader team.
JG08: Leads development of complex parts of modules, owns technically complex solutions, considers industrialization and cross-team impact, and may guide a small group of peers through technical execution.
JG09: Takes full technical ownership of multiple complex designs end-to-end, manages system impacts and cross-functional dependencies, and drives solutions through significant technical uncertainty.
Education and Experience
JG07: BS degree in a technical field and 2+ years of solid experience; MS preferred.
JG08: BS degree in a technical field and 5+ years of thorough experience; MS or PhD preferred.
JG09: BS degree in a technical field and 8+ years of substantial experience; MS or PhD preferred.
Experience with data processing/analysis/software tools (e.g. MATLAB) (including during graduate studies)
Hands-on experience with optical system alignment (e.g. imaging, testing, alignment, detector system, etc.)
Strong English communication skills – both written and oral
Personal Skills
Can observe and respond to people and situations and interact with others encountered in the course of work
Can learn and apply new information or skills
Must be able to read and interpret data, information and documents
Strong customer focus and commitment to customer satisfaction through prioritization, quality, efficiency and professionalism
Ability to complete assignments with attention to detail and high degree of accuracy
Proven ability to perform effectively in a demanding environment with changing workloads
Result driven-demonstrate ownership and accountability
Identifies bottlenecks and drives improvements
Work independently or as part of a team and follow through on assignments with minimal supervision
Demonstrate open, clear, concise and professional communication
Ability to establish and maintain cooperative working relationships with co-workers and customer
Work according to a strict set of procedures within the provided timelines
Other Information
This position is located on-site in Wilton, CT. It requires onsite presence to attend in-person work-related events, trainings and meetings and to further ensure teamwork, collaboration and innovation
A flexible workplace arrangement may be available to employees working in roles conducive to remote work (up to 2 days a week)
Role within Office
Essential Job Functions
The essential job functions for this position include, but are not limited to:
Work in a fast-paced office environment, including working in a standing or seated position for long periods sometimes exceeding 8 hours per day, 5 days per week
Commute to ASML’s facility and report to work on a regular and timely basis and complete the scheduled workday on a consistent basis
Routinely required to sit; walk; talk; hear; use hands to finger, handle and feel; stoop, kneel, crouch, twist, reach and stretch
Occasionally required to move around the campus
Perform office tasks using simple hand grasping, fine hand manipulation and reach associated with assigned tasks such as paperwork, computer keyboarding (e.g. Word, Excel, PowerPoint), filing, calculating and use of telephone or other handheld electronic devices, continuously sometimes exceeding 8 hours per day, 5 days per week
Have a sufficient ability to communicate, through sight, hearing and/or otherwise, to perform assigned tasks and maintain proper job safety conditions
Occasionally lift and/or move up to 20 pounds
Specific vision abilities required by this job include close vision, color vision, peripheral vision, depth perception and ability to adjust focus
Perform other functions that may be assigned
Additional Responsibilities (as needed in the cleanroom and/or labs):
The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job, reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions
Must be willing to work in a clean room environment, wearing coveralls, hoods, booties, safety glasses and gloves. Working under ISO 9000/14000 standards
The environment in the cleanroom is moderate in temperature with moderate to high noise level
Working around lasers; working with ladders; working on platforms; and working around chemicals
There is potential for exposure to strong magnetic fields, high voltage and currents.
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 diversityASML 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.
Need to know more about applying for a job at ASML? Read our frequently asked questions.
Request an AccommodationASML 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 [email protected] 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.
Skills Required
- BS degree in a technical field
- MS or PhD in a technical field
- 2+ to 8+ years relevant experience depending on job grade (JG07: 2+, JG08: 5+, JG09: 8+)
- Hands-on experience with optical system alignment, imaging, detector systems and testing
- Experience with data processing/analysis and MATLAB
- Familiarity with LabVIEW and Python
- Ability to develop/debug signal processing and implement algorithms into MATLAB code; GUI building experience
- Strong English written and oral communication skills
- Willingness and ability to work on-site in Wilton, CT (on-site presence required)
- Willingness to work in cleanroom environment and comply with ISO 9000/14000 procedures
- Legally authorized to access controlled technology as required by Export Administration Regulations
- Ability to travel up to ~10% internationally and domestically
ASML Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about ASML and has not been reviewed or approved by ASML.
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Healthcare Strength — Health coverage is broad and employer‑funded to a significant degree, with multiple plan options plus mental health and wellness resources. Complementary offerings like onsite/virtual care, HSA contributions, and a gym subsidy strengthen the overall medical package.
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Parental & Family Support — Family‑forming benefits include paid parental leave, adoption assistance, IVF coverage, and practical supports like lactation rooms and milk‑shipment for travel. These provisions indicate substantial caregiving support across life stages.
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Leave & Time Off Breadth — Paid time off can reach a high ceiling when combining vacation and company holidays, with accruals increasing by tenure. Flexible workplace policies and a vacation sell‑back option add usability to the time‑off program.
ASML Insights
What We Do
ASML is a high-tech company, headquartered in the Netherlands. We manufacture the complex lithography machines that chipmakers use to produce integrated circuits, or computer chips. Over 30 years, we have grown from a small startup into a multinational company with over 60 locations across Europe, Asia and the US. Behind ASML’s innovations are engineers who think ahead. The people who work at our company include some of the most creative minds in physics, electrical engineering, mathematics, chemistry, mechatronics, optics, mechanical engineering, computer science and software engineering. Because ASML spends more than €2 billion per year on R&D, our teams have the freedom, support and resources to experiment, test and push the boundaries of technology. They work in close-knit, multidisciplinary teams, listening to and learning from each other.








