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Cristiano Oliveira has an extensive background in telecommunications and technical support, beginning military service with the Exército Brasileiro from March 1993 to February 2002. Following military service, career progression includes roles at Engsat - Engenharia e Serviços em Telcomunicações Ltda., and technical positions at Vicom Ltda., Getronics Ltda., Nokia Siemens Networks, and Harris CapRock Communications, where responsibilities encompassed maintenance and operations for various systems. Since January 2017, Cristiano has served as a Service Desk Technician at Speedcast, building on prior experience as a Field Technician. Educational credentials include a Técnico em Telecomunicação degree from Colégio Agulhas Negras and a CCNA 4.0 certification from Senai.