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David has 24 years of experience in mobile networks. He worked in different technologies, from AMPS, CDMA, GSM and LTE on TIM Brasil, Vivo, Brasil Telecom and Oi. He is specialized in core network and signaling protocols. He graduated as an electrical engineer in UTF-PR, made a post graduation in Telecommunications and Informatics and concluded his mastering degree in Universidade de Brasilia in 2010. Currently he is a Core Network Technology Consultant in Oi.