Sr. Mechanical Engineer

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Wilton, CT, USA
In-Office
109K-150K Annually
Senior level
Hardware • Software • Semiconductor
The Role
Develop precision mechanical subsystems and tooling for semiconductor lithography systems. Responsibilities include requirements analysis, concept development, engineering calculations and FEA, CAD design, prototyping, testing, supplier collaboration, technical documentation, and system integration. The role requires ownership across the full product development lifecycle, consideration of manufacturability, and collaboration with multidisciplinary teams. This is an on-site position in Wilton, Connecticut, with occasional travel and potential cleanroom and laboratory work.
Summary Generated by Built In
Introduction to the job

ASML US, including its affiliates and subsidiaries, bring together the most creative minds in science and technology to develop lithography machines that are key to producing faster, cheaper, more energy-efficient microchips. We design, develop, integrate, market and service these advanced machines, which enable our customers - the world’s leading chipmakers - to reduce the size and increase the functionality of their microchips, which in turn leads to smaller, more powerful consumer electronics. Our headquarters are in Veldhoven, Netherlands, and we have 18 office locations around the United States including main offices in Chandler, Arizona, San Jose and San Diego, California, Wilton, Connecticut, and Hillsboro, Oregon.

Founded in 1984, ASML is the world’s leading provider of lithography systems for the semiconductor industry, manufacturing complex machines that are critical to the production of integrated circuits or microchips. The mission of the Mechanical Development department is to design and develop the complex mechanics for these machines, which are some of the highest precision products ever produced in the world. This position is based on-site in Wilton, CT, which has both R&D and manufacturing operations. We design and produce multiple sub-system modules that are shipped to our headquarters in Veldhoven, The Netherlands where they are integrated into the full lithography machine.

Role and responsibilities

As a Mechanical Design Engineer, you will be responsible for developing portions of the lithography system and/or associated tooling. You will work on sub-systems involving robotics, mechatronics, precision mechanics, and/or optomechanics. Precision machine design at ASML starts with understanding the functional requirements and deriving specifications. You will collaborate with system architects in a multidiscipline project team to develop concepts, perform engineering analysis, build and test prototypes, generate detailed CAD designs, create engineering drawings, partner with suppliers, and support system integration and testing.

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.

Education and experience

  • Bachelor's degree in Mechanical Engineering or a related technical discipline required; Master's degree or PhD preferred.
  • Minimum of 5 years of experience in mechanical design and engineering, with demonstrated involvement in the design and development of complex mechanical systems and components.
  • Experience leading the development of technically complex solutions, including ownership of significant portions of module or subsystem designs.
  • Proven ability to manage the full product development lifecycle from concept ("art-to-part") through design, validation, and implementation.
  • Experience considering manufacturability, industrialization, and cross-functional impacts throughout the design process.
  • Background in mechatronics, precision mechanical design, or complex optical systems is highly desirable.
  • Strong understanding of mechanical design principles, including kinematics, dynamics, material properties, structural behavior, and system-level mechanical performance.
  • Experience utilizing 3D CAD modeling tools for design conceptualization and product realization.
  • Knowledge of engineering analysis techniques, including first-principles calculations and Finite Element Analysis (FEA) for stress, strain, deformation, and modal response.
  • Demonstrated ability to interpret analytical results, solve complex engineering problems, and provide practical design recommendations.
  • Strong written and verbal communication skills, including technical documentation and presentation development.
  • Ability to effectively communicate in English, both verbally and in writing.
  • Experience providing technical guidance or mentorship to peers is preferred.

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 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:

  • Capability to interface with multidisciplinary groups including senior leadership.
  • High energy self-motivated team player with strong desire to learn.
  • Possess strong leadership and ownership characteristics with commitment to achieve results on time.
  • Potential to develop into a technical leader in the organization.
  • Can learn and apply new information or skills.
  • Must be able to read and interpret data, information, and documents.
  • Strong customer focus and commitment to customer satisfaction through prioritization, quality, efficiency and professionalism.
  • Ability to complete assignments with attention to detail and high degree of accuracy.
  • Proven ability to perform effectively in a demanding environment with changing workloads.
  • Result driven-demonstrate ownership and accountability.
  • Identifies bottlenecks and drives improvements.
  • Work independently or as part of a team and follow through on assignments with minimal supervision.
  • Demonstrate open, clear, concise and professional communication.
  • Ability to establish and maintain cooperative working relationships with co-workers and customer.
  • Can observe and respond to people and situations and interact with others encountered in the course of work. 
  • Work according to a strict set of procedures within the provided timelines.

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 two 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 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, five 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.
  • May require travel (specify domestic and/or international) dependent on business needs up to ~10%.
  • 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.
  • Safely working around lasers; on ladders; on platforms; around chemicals; near strong magnetic fields; around high voltage and currents.
  • The employee is occasionally required to move around the campus.
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:

$109,200-150,150

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.

This position requires access to controlled technology, as defined in the United States Export Administration Regulations (15 C.F.R. § 730, et seq.). Qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require ASML to proceed with candidates who are immediately eligible to access controlled technology.

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 [email protected] 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.

Skills Required

  • Bachelor's degree in Mechanical Engineering or a related technical discipline
  • Minimum 5 years of experience in mechanical design and engineering
  • Experience designing and developing complex mechanical systems and components
  • Experience leading technically complex solutions and owning significant portions of module or subsystem designs
  • Experience managing the full product development lifecycle from concept through design, validation, and implementation
  • Experience considering manufacturability, industrialization, and cross-functional impacts
  • Background in mechatronics, precision mechanical design, or complex optical systems
  • Understanding of kinematics, dynamics, material properties, structural behavior, and system-level mechanical performance
  • Experience using 3D CAD modeling tools
  • Knowledge of engineering analysis techniques, including first-principles calculations and Finite Element Analysis
  • Ability to interpret analytical results and provide practical design recommendations
  • Strong written and verbal communication skills, including technical documentation and presentations
  • Ability to communicate effectively in English
  • Technical guidance or mentorship experience
  • Master's degree or PhD
  • Willingness to work on-site in Wilton, Connecticut
  • Willingness to work in a cleanroom environment and follow applicable safety procedures
  • Legal authorization to access controlled technology under United States export regulations

ASML Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about ASML and has not been reviewed or approved by ASML.

  • Healthcare Strength Health coverage is broad and employer‑funded to a significant degree, with multiple plan options plus mental health and wellness resources. Complementary offerings like onsite/virtual care, HSA contributions, and a gym subsidy strengthen the overall medical package.
  • Parental & Family Support Family‑forming benefits include paid parental leave, adoption assistance, IVF coverage, and practical supports like lactation rooms and milk‑shipment for travel. These provisions indicate substantial caregiving support across life stages.
  • Leave & Time Off Breadth Paid time off can reach a high ceiling when combining vacation and company holidays, with accruals increasing by tenure. Flexible workplace policies and a vacation sell‑back option add usability to the time‑off program.

ASML Insights

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The Company
HQ: Veldhoven
34,760 Employees
Year Founded: 1984

What We Do

ASML is a high-tech company, headquartered in the Netherlands. We manufacture the complex lithography machines that chipmakers use to produce integrated circuits, or computer chips. Over 30 years, we have grown from a small startup into a multinational company with over 60 locations across Europe, Asia and the US. Behind ASML’s innovations are engineers who think ahead. The people who work at our company include some of the most creative minds in physics, electrical engineering, mathematics, chemistry, mechatronics, optics, mechanical engineering, computer science and software engineering. Because ASML spends more than €2 billion per year on R&D, our teams have the freedom, support and resources to experiment, test and push the boundaries of technology. They work in close-knit, multidisciplinary teams, listening to and learning from each other.

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