Senior Mechanical Engineer

About the Role

ASML US, including its affiliates and subsidiaries, develops lithography machines that help leading chipmakers produce faster, cheaper, and more energy-efficient microchips. ASML designs, develops, integrates, markets, and services advanced systems that enable customers to reduce microchip size and increase functionality, supporting smaller and more powerful consumer electronics.

This role sits within ASML’s Mechanical Development department, focused on designing and developing complex mechanics for some of the highest-precision products in the world. The position is based on-site in Wilton, CT, which includes both R&D and manufacturing operations. In this role, you will specify, design, develop, realize, integrate, and test modules and tools in close collaboration with cross-functional partners and suppliers. You will work with system architects and senior engineers in a multidiscipline project team to develop concepts, perform engineering analysis, build and test prototypes, and create detailed CAD designs and engineering drawings delivered within system specifications, cost targets, and project schedules.

You will take full technical ownership and lead multiple complex designs end-to-end, with a broader view of system impacts and cross-functional dependencies. You will contribute to sub-module development and change, oversee functional relationships across domains, and drive solutions through significant technical uncertainty.

This position may require access to controlled technology as defined in the Export Administration Regulations (15 C.F.R. § 730, et seq.). As a condition of employment, qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require the Company to proceed with candidates who are immediately eligible to access controlled technology.

Role and Responsibilities

• Identify, analyze, document, and manage requirements with traceability, coordinating verification criteria to confirm deliverables meet intent.
• Conduct research and feasibility studies, document findings, and translate results into recommendations, tradeoffs, and decision inputs.
• Develop engineering concepts and solutions, make technical choices, and resolve issues to meet functionality, performance, cost, safety, and compliance needs.
• Define and communicate specifications and high-level designs, align interfaces, and support reviews and approvals to enable quality execution.
• Support system or product integration by coordinating dependencies, applying configuration management, and enabling smooth project execution.
• Define and execute validation and test approaches, improve methods and procedures, and ensure qualification evidence supports release readiness.
• Estimate effort, plan and track work, manage risks and dependencies, and deliver assigned work packages or projects to agreed quality and timelines.
• Maintain accurate technical documentation and follow EHS policies while identifying and mitigating safety risks.

Education and Experience

• BS or BE degree in a relevant technical field required.
• MS or PhD preferred.
• Minimum of 8 years of relevant work experience required.

Required Skills

Technical and Functional

• Ability to develop engineering concepts and solutions, make sound technical tradeoffs, resolve issues, and realize designs meeting functionality, performance, cost, safety, compliance, and schedule constraints within system or module specifications.
• Ability to plan and execute verification and validation, ensure qualification evidence supports release readiness, and support system or product integration by coordinating dependencies and applying disciplined configuration and traceability.
• Capability to interface with multidisciplinary groups, including senior leadership.
• High energy, self-motivated team player with a strong desire to learn.
• 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 a high degree of accuracy.
• Proven ability to perform effectively in a demanding environment with changing workloads.
• Ability to work independently or as part of a team and follow through on assignments with minimal supervision.
• Ability to work according to a strict set of procedures within provided timelines.

Behavioral and Leadership

• Drives Results: Translate strategic and technical goals into clear priorities, execution plans, and measurable outcomes; deliver committed results on time with the right quality by taking ownership, managing trade-offs, removing obstacles, and sustaining momentum across stakeholders and dependencies.
• Demonstrates Self-awareness: Understand and manage strengths, limitations, emotions, and impact on others; actively seek and use feedback; and adapt behaviors and decisions to improve collaboration, leadership effectiveness, and results in high-pressure, ambiguous, or complex environments.
• Values Differences: Intentionally seek, respect, and integrate diverse perspectives and working styles to strengthen collaboration and decision quality, ensuring all voices are heard and treated equitably, enabling inclusive execution across cross-functional and multicultural stakeholders.
• Builds Effective Teams: Form, align, and develop teams that consistently deliver results by establishing clear goals, roles, and ways of working; fostering trust and inclusion; enabling healthy conflict and accountability; and coaching individuals to grow performance and capability over time.
• Drives Vision and Purpose: Define and communicate a clear, compelling direction connecting strategy to execution; align people on priorities and tradeoffs; sustain motivation and focus through ambiguity, change, and competing demands.
• Strong leadership and ownership with commitment to achieve results on time.
• Ability to observe and respond to people and situations and interact effectively with others encountered during work.
• Open, clear, concise, and professional communication.
• Ability to establish and maintain cooperative working relationships with coworkers and customers.
• Result driven approach with demonstrated ownership and accountability.
• Identify bottlenecks and drive improvements.

Additional Information

• This position is located on-site, requiring in-person presence to support teamwork, collaboration, innovation, and attendance at in-person work-related events, trainings, and meetings.
• Routinely required to sit, walk, talk, hear, use hands to keyboard, finger, handle, and feel; stoop, kneel, crouch, twist, reach, and stretch. Occasionally required to move around the campus.
• Occasionally lift and/or move up to 20 pounds.
• May require travel (domestic and/or international) depending on business needs up to approximately 10%.