ASML
SemiconductorsDirect Workday career site

Senior Optical Engineer

Pay
$117,750 – $173,000 per year
Location
Wilton, CT · On-site
Job type
Full-time
Level
Senior
Experience
4+ years
Education
Bachelor's degree
Listed
29 days ago

Skills & highlights for this role

  • optical alignment
  • detector characterization
  • MATLAB
  • Python

Also useful

  • signal processing
  • optical system modeling

About the role

Introduction to the Job At ASML, you will help advance the technology behind some of the world's most powerful microchips. As a Senior Optical Engineer, you will contribute to the development of advanced optical sensing solutions that support next-generation lithography systems used by leading semiconductor manufacturers around the world.

Based in Wilton, Connecticut, this Senior Optical Engineer role is part of the Wafer Alignment Sensor team. You will work on complex optical and photonic systems that enable precise wafer positioning and measurement. Your work will directly support ASML's mission of enabling faster, more energy-efficient semiconductor technology.

Role and Responsibilities As a Senior Optical Engineer, you will combine optical engineering expertise with hands-on experimentation and data-driven problem solving. You will work across disciplines to develop, test, and improve advanced sensor systems that are integrated into ASML lithography equipment. Design and develop optical and photonic sensor systems for semiconductor manufacturing equipment.

Build, align, test, and characterize complex optical systems and detector assemblies. Analyze performance data to identify issues and improve sensor functionality. Lead technical investigations to determine root causes and develop effective solutions. Develop and validate signal processing algorithms and experimental test plans. Collaborate with software, electronics, manufacturing, and system engineering teams.

Communicate technical findings clearly to both engineering and business stakeholders. Education and Experience Bachelor's degree in physics, applied physics, optical engineering, photonics, or a related field. Master's degree in physics, optics, photonics, or a related discipline preferred. Minimum of 4 years of professional experience in optical engineering or photonic system development.

Experience working with optical alignment, imaging systems, detectors, or laboratory testing environments. Experience with data analysis and software development using MATLAB and Python. Experience with laboratory automation, signal processing, or optical system modeling is beneficial. Strong written and verbal communication skills in English.

Skills 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: Apply strong analytical thinking to solve complex technical problems. Collaborate effectively across multidisciplinary engineering teams. Communicate technical concepts clearly to different audiences. Take ownership of projects and drive results with accountability.

Learn new technologies and methods quickly. Interpret experimental data and make evidence-based decisions. Identify opportunities for continuous improvement. Organize and prioritize work in a changing environment. Build productive working relationships with colleagues and stakeholders. Maintain attention to detail while balancing multiple priorities. Other Information This position is located on-site in Wilton, CT.

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 The current base annual salary range for this role is currently: $117,750 - $173,000 Additional

Pay and benefits

There is potential for exposure to strong magnetic fields, high voltage and currents. The current base annual salary range for this role is currently: $0-0 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. For more information, please contact the Recruiter or click on this link Compensation & Benefits in the US. All new ASML jobs have a minimum application deadline of 10 days.

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. 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.

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.

Read the original posting

From ASML's careers page, first listed on Rolev.ai on October 11, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

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Common questions

What is the salary for the Senior Optical Engineer role at ASML?

The Senior Optical Engineer posting at ASML states compensation of $117,750 – $173,000 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on ASML's official career site.

Where is the Senior Optical Engineer job at ASML located?

This Senior Optical Engineer position at ASML is located in Wilton, CT (On-site). Always check ASML's application page for specific state eligibility or relocation policies.

What qualifications are required for Senior Optical Engineer at ASML?

For the Senior Optical Engineer role, ASML highlights 4+ years of relevant experience; a bachelor's degree; experience with optical alignment, detector characterization, MATLAB, Python. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Senior Optical Engineer position at ASML?

This listing links directly to ASML's Workday application page. You can apply directly on ASML's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Workday application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.