Dr. Christoph Glingener is responsible for all global research and development, technology and strategy, and product activities. He joined the company in January 2023, following the business combination of ADTRAN Holdings, Inc. and ADVA Optical Networking where he is responsible for all global research and development, product management, and global operations. While at ADVA, he focused on streamlining ADVA Optical Networking's product portfolio, defining the product strategy, and building the group's standing as a global innovator in optical networking. Additionally, in September 2022, Christoph took on the responsibility as CEO of ADVA Optical Networking in order to conclude the business combination with Adtran. Prior to joining ADVA, Christoph served in a number of academic and corporate roles including positions with Marconi Communications (now Ericsson) and Siemens Communications (now Infinera). Christoph holds a master's degree in Electrical Engineering and a Ph. D. in Optical Networks from the Technical University of Dortmund.