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Petzold Gunnar has extensive experience in quality management and engineering, currently serving as Senior Director of Quality Management at ADVA Optical Networking since August 2009. Prior to this role, Petzold worked as a Staff Engineer and team leader at Qimonda from May 2004 to March 2009, focusing on customer return analyses related to Back-End and supply chain processes, as well as continuous improvement in quality systems. Earlier in the career, Petzold was an R&D engineer at Siemens from March 1994 to April 2004, where involvement included various R&D projects and the operation of a reliability lab in Berlin. Educationally, Petzold holds a diploma in electronics technology from Technische Universität Dresden, obtained between 1988 and 1994.