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Katsumasa Horiuchi is an accomplished network engineering professional with over two decades of experience in the field. Currently serving as Manager of Network Engineering at Rakuten USA since September 2017, Katsumasa has made significant contributions to the enhancement of corporate network infrastructure, particularly in Wi-Fi and SD-WAN monitoring systems. Prior experience at Rakuten includes roles as Group Manager for the Global Network Group, where Katsumasa managed a diverse team across multiple global locations, and as Senior Network Engineer, focusing on integration during post-merger processes. Earlier roles at Internet Initiative Japan encompassed responsibilities ranging from network design to incident management, reinforcing expertise in creating reliable and efficient network solutions. Katsumasa holds a Master's degree in Applied Physics from Hosei University.