Introduction to the role As a Principal Mechanical Engineer – Research , you help shape the next generation of lithography technology that powers the world’s most advanced microchips. Your work supports ASML’s mission to push the boundaries of physics, engineering, and manufacturing. You contribute to systems that enable smaller, faster, and more energy‑efficient devices used every day in homes, hospitals, cars, and communication networks. Role and responsibilities In this role, you guide the mechanical design and research activities for complex subsystems within our light‑source technology. You work with engineers, scientists, suppliers, and cross-functional partners to bring new concepts to life. You balance design rigor, feasibility, and quality while supporting long-term technical innovation.