Serve as the main technical contact for customer-related issues, providing fast and effective support for any quality or performance concerns. Understand customer-specific requirements and applications (automotive, architectural, mirror, solar) and ensure products are aligned to meet or exceed expectations. Lead technical investigations for customer complaints or claims; perform root cause analysis and develop robust corrective and preventive actions. Proactively work with customers to provide technical advice, product application support, and solutions to enhance product performance and reliability. Support customer audits, technical reviews, and site visits by presenting technical data, answering inquiries, and demonstrating robust process control. Actively monitor customer feedback, complaints, and satisfaction metrics to drive continuous product and service improvements. Support the launch of new products or specifications by providing customers with technical validation, application testing, and product performance data. Collaborate with production and quality teams to ensure that the float glass produced meets customer-specific standards, focusing on optical quality, thickness control, flatness, and surface properties. Partner with customers on trials, product qualifications, and application development projects, ensuring successful outcomes and adoption. Maintain deep technical knowledge of float glass processes, inspection systems, and customer applications to better support and advise customers. Work closely with suppliers (materials, equipment) when needed to address technical issues that could impact customer satisfaction. Develop and maintain technical documentation related to customer support (technical bulletins, guidelines, troubleshooting manuals). Drive internal awareness of customer requirements and voice-of-customer (VOC) insights to continuously improve operations and services. Ensure that all activities related to customer support and product quality comply with ISO 9001, IATF 16949, and relevant regulatory standards.