Optical Engineer (Internship)
ASML
This job at a glance
- Who can apply
- New grads and up to 1 year
- Must know
- REST APIsTroubleshootingData structures & algorithmsStakeholder managementMATLABData analysis
- Nice to have
- Python
- Work
- On-site in Wilton Center · internship
- Pay
- Not stated by the employer.
- Skill demand
- Troubleshooting58%Stakeholder management14%Data structures & algorithms4%REST APIs2%of 99 similar entry-level jobs posted in the US this week
- Listed
- Oct 28, 2026 · still open
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About the Role
ASML’s Optical Sensor Group in Wilton CT is seeking a Physicist/Optical Engineer for a Co-op position (6 to 9 months) to support & 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 SW functioning in close collaboration with the rest of the lithography system. Understanding the components in their relation to the sensor system and understanding the interaction with the rest of the tool is of fundamental importance.
Key Responsibilities
- General:
- Using general Physics, Optics, and Software knowledge and an understanding of the sensor systems and tools to de-bug functionality or performance issues in the optical alignment sensors.
- Having hands-on skills of building optical system such as imaging, testing, alignment or detector system.
- Leadership:
- Potential to lead executing activities for determining problem root cause.
- Execute complex tests, gather data, and effectively communicate results on different levels of abstraction.
- 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 input from different stakeholders.
- Capability to clearly communicate information on different levels of abstraction.
- Programming:
- Implement data analysis techniques into functioning MATLAB codes.
- Optimization skills, GUI building experience, and familiarity with Labview and Python are a plus.
Requirements & Tech Stack
- Familiarity with light sources, lasers.
- Data Analysis.
- Python or Matlab.
- GUI building experience (plus).
- Familiarity with Labview (plus).
Qualifications
- Master student in Physics, Optics, or other related engineering disciplines.
- Available for 6 months with a flexible start date based on Spring or Fall Semester.
This position is located on-site in Wilton, CT. It requires on-site presence to attend in-person work-related events, trainings and meetings.
This position may require access to controlled technology.