Introduction to the job: At the Berlin site, more than 1,700 employees develop and manufacture high-precision key components for ASML lithography systems – with expertise in optics, mechanics, and electronics. You are part of a global competence center for optics and wafer chuck technology within ASML, combining craftsmanship in precision manufacturing with advanced optical production technology. Role and responsibilities: This role operates within a highly qualified team that uses ion beam-based etching processes in high vacuum to achieve extreme surface flatness on demanding products made of glass, glass ceramics, and high-performance ceramics. A wide range of competencies is applied, making work on ISA systems unique. The systems are built in-house and are globally unique. The equipment park is continuously expanding, and due to the variety of production steps, product diversity, and individual requirements of each workpiece, the ISA environment remains highly dynamic and diverse. Key responsibilities include: Operating ion beam systems (ISA) for processing glass, glass ceramics, and high-performance ceramics according to defined specifications. Preparing components and assembling/disassembling them under cleanroom conditions. Measuring components and documenting data and processing results (SPC). Performing optical and visual inspections as well as interferometric measurements. Carrying out maintenance tasks on ISA systems in accordance with instructions to ensure proper system conditions. Conducting incoming and outgoing inspections of components. Identifying and documenting deviations, communicating them to relevant interfaces, and escalating technical issues or failures. Education and experience: Successfully completed vocational training in a relevant field (e.g., precision optician, precision mechanic, flat glass mechanic, optician, dental technician, watchmaker, microtechnologist, physics lab technician, or physical-technical assistant). Professional experience in a manufacturing or production environment Experience with handling optical components or precision parts as well as CNC-controlled machinery is considered a plus Familiarity with working under cleanroom conditions and willingness to work in a shift system Practical knowledge of SAP and MS Office Very good German language skills, both written and spoken Skills: Working in a highly precise manufacturing environment requires a strong focus on quality, collaboration, and continuous improvement. To succeed in this role, the following skills are important: Team-oriented mindset with the ability to closely collaborate and align with colleagues Strong fine motor skills combined with a good eye and sense for surfaces Careful and structured working style with a clear focus on quality High level of attention to detail, cleanliness, and concentration Interest in metrology and precision measurement Motivation to learn, grow, and continuously develop Other information: Job with bright future prospects at an innovation leader in the semiconductor industry in Berlin Neukölln Remuneration according to company collective agreement (with IG Metall) including 13th monthly salary and variable remuneration components Collective working time: 35 hours/week Flexible arrangement of your daily working hours (depending on the work area) 30 days of vacation Reimbursement of moving expenses for you and your family (starting from 100 km distance) Specific advanced training and development opportunities Access to organized childcare and vacation care Health and sports offers (e.g. subsidy for sports activities, health days, company doctor, free vaccinations, etc.) Travel allowance for BVG company ticket or bicycle