Enter a job title or keyword

Senior Optical Engineer

ASML


Job Location:

Wilton, CA - USA

Monthly Salary: Not provided by the employer
Posted: 29 September 2026 (20 hours ago)
Application Deadline: 27 December 2026
Vacancies: 1 Vacancy

Job Summary

Introduction to the Job

At ASML you will help advance the technology behind some of the worlds 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 ASMLs 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
  • Bachelors degree in physics applied physics optical engineering photonics or a related field.
  • Masters 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 youll always have new challenges and new problems to solve and working together is the only way to do that. You wont work in a silo. Instead youll be part of a creative dynamic work environment where youll collaborate with supportive colleagues. There is always space for creative and unique points of view. Youll have the flexibility and trust to choose how best to tackle tasks and solve problems.

To thrive in this job youll 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. 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 ASMLs 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

Additional Responsibilities: 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 Companys 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.

Inclusion and diversity

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 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 Accommodation

ASML 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 to initiate the companys reasonable accommodation process.

Please note: This email address is solely intended to provide a method for applicants to initiate ASMLs process to request accommodation(s). Any recruitment questions should be directed to the designated Talent Acquisition member for the position.


Required Experience:

Senior IC


About Company

Company Logo

ASML gives the world's leading chipmakers the power to mass produce patterns on silicon, helping to make computer chips smaller, faster and greener.

View Profile View Profile