Skip to main content

The Industrial Associates (IA) Program

Job Board

Optical Design Engineer 


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. Understanding the components in their relation to the sensor system and understanding the interaction with the rest of the metrology tool and the measurement process is of fundamental importance. Nominal travel might be required (~ 15%) to Europe, Asia, and within the US can be expected on a routine basis.

The job description below defines the ideal set of qualifications for the position. 

Job Description

Using physics, mathematics, electronics, mechanics, and software knowledge and an understanding of the sensor systems and the lithography tool to model, design and de-bug new and existing sensors in complex environments.

Desired Skills
  • Optical modeling and data analysis and evaluation:
    • Expertise with design, optical tolerancing and modeling with CodeV and/or Zemax
    • Wave propagation and diffraction modeling (use of FRED for this modeling is a plus)
    • Polarization optics and polarization modeling
    • Image processing and pattern recognition
    • Optical and physics Simulation in Matlab and other suitable languages and design tools
    • 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
    • Matlab for data processing, correlation and trending, and visualization
  • Leadership:
    • The candidate must have the capacity to lead engineers and technicians in executing activities related to complex tests, data gathering, and effectively communicate results to managers and customers
  • Problem solving:
    • The candidate must have expertise at troubleshooting complex problems on complex systems, develop and debug algorithms
    • The candidate must have the ability to use analytical processes (8Ds, fault trees, Ishikawa diagrams, etc…) to develop test plans to determine problem root cause
  • Communication skills:
    • The candidate must have the capability to clearly communicate progress and status of ongoing investigations to managers and to customers
    • Candidate will be required to write reports documenting investigations carried out


Minimum MS in optics (preferred) physics (PhD preferred), applied mathematics, electrical engineering or other engineering discipline, with an emphasis on optical system, photonics and data analysis and trending. Dual degree in a second engineering discipline a plus.


Three to five years of experience required. Experience in working with engineers across disciplines to solve complex problems in a timely manner. Strong emphasis on creative problem solving and effective communication.

Personal Skills

Candidate must:

  • Be able to break down complex problems with limited data to come to solutions – strong critical thinking capability
  • Have strong written and oral communication skills and a commitment to achieving results while under time constraints
  • Have high energy, high level of dedication
  • Be willing to jump in on new issues, get to the bottom of the causes and propose practical solutions
  • Be able to interface with multidisciplinary groups and work effectively in a team and be willing to take on responsibility, follow through and keep multiple simultaneous assignments on schedule
  • Be able to quickly acquire technical knowledge from documentation and on-the-job training and be capable of thoroughly investigating technical issues (analytically and hands-on in a lab)