Senior Optical Engineer

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. 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) 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 ASML's 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. Compensation 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. 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. 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 View email address on click.appcast.io to initiate the company's reasonable accommodation process. 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. #J-18808-Ljbffr ASML US, LLC