Optical Design Engineer | ASML

Date Posted: 
Tuesday, February 8, 2022

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Position Location: 
Wilton, CT
Job Description: 

Introduction to the job

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ASML US brings 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, the 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.

ASML’s YieldStar Sensor Group in Wilton, CT is seeking a Physicist/Engineer with preference to optical engineering to support and develop optical/photonic sensor systems used within ASML’s photolithography tools. These systems typically include light sources, detectors, optical and electro-optical components, fiber optics, electronics and signal processing software functioning as a key sub-system in ASML optical metrology tool. The job mission of the optical design engineer is to contribute to YS sensor development, realization and field sustaining by optical engineering contributions in areas of optical design and tolerancing, optical technologies of devices and how they can be implemented in YS sensor, Optical build and alignment and data processing and evaluation for issues root cause evaluation.

This position requires access to controlled technology, as defined in the 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.

Role and responsibilities

Key components of this position are:

Optical modeling and data analysis and evaluation:

  • Perform Optical design, optical tolerancing and modeling with CodeV and/or Zemax.
  • Physical Optics Simulation (wave propagation, partial coherence calculation and other optical effects) in Matlab, FRED and CodeV or other suitable design tools.
  • Perform Polarization optics error budgeting and polarization modeling.
  • Data processing and trending with Matlab.
  • And/or hands-on optical alignment, testing and qualification.
  • Building and aligning complex sensors using diverse mechanical, collimation and interferometry.
  • Test stand design and build: concept, error budget, realization.
  • Optical sensors Hardware build and debugging.
  • Working knowledge with diverse optical devices and sensors: objectives, collimation and relay optics, fibers, cameras and detectors.

Education and experience

  • Bachelor's Degree in Optical engineering and sciences, Physics, with focus in Optics or Electrical engineering with focus on photonics and a minimum of 4 years’ experienceor equivalent experience.
  • Master's Degreein Optical engineering and sciences, Physics, with focus in Optics or electrical engineering with focus on photonics. with minimum of 2 years’ experienceORa PhD degree (new graduate)

The candidate must demonstrate experience in designing and realization of high end optical sensor in many of these areas:

  • Optical design and tolerancing using CodeV or equivalent SW package.
  • Physical optics modeling with FRED or equivalent SW package.
  • Optical sensors alignment experience using diverse alignment strategy and tools like optical collimators, mechanical gaging and interferometers.
  • Optical sensor metrology test design and build.
  • Expertise with diverse optical technologies and devices: polarization devices, relays, objectives, light sources, fibers, camera and detectors.


Working at the cutting edge of tech, you’ll always have new challenges and new problems to solve – and working together is the only way to do that. You won’t work in a silo. Instead, you’ll be part of a creative, dynamic work environment where you’ll collaborate with supportive colleagues. There is always space for creative and unique points of view. You’ll have the flexibility and trust to choose how best to tackle tasks and solve problems.

To thrive in this job, you’ll need the following 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 and deadlines.
  • 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 manager, co-workers and customer.
  • Work according to a strict set of procedures within the provided timelines.

Diversity & Inclusion

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 diversity and inclusion is a driving force in the success of our company.

Other information

Role within Office


  • Routinely required to sit; walk; talk; hear; use hands to keyboard, finger, handle, and feel; stoop, kneel, crouch, twist, reach, and stretch. Occasionally required to move around the campus.
  • Occasionally lift and/or move up to 20 pounds.
  • May require travel dependent on business needs.
  • Specific vision abilities required by this job include close vision, color vision, peripheral vision, depth perception, and ability to adjust focus.

Additional Responsibilities (as needed in the cleanroom and/or labs):

The role will require some clean room engineering support during new product introduction and customer escalation to find root cause. Candidate is expected to occasionally:

  • 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.

This position is located onsite 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 two days a week).

EOE AA M/F/Veteran/Disability

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