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Jefferson Mota is currently working at Telecall as a Mobile Core Engineering - MVNO. Prior to this role, Jefferson worked at companies like NOKIA, CLARO, NORTEL, and ARQIA where Jefferson held the title of CS Core Engineer. Jefferson has experience in Circuit Core operations, planning, integration, optimization, instructor, roaming, and E2E customer solutions. Jefferson has also worked as a PS Core Engineer at ERICSSON and NOKIA and has experience in Packet Core planning and consultancy. With a degree in Telecommunications Engineering from Instituto Nacional de Telecomunicações - Inatel, an Advanced English degree from Kaplan International - Seattle, and an MBA in Telecommunications Services from Universidade Federal Fluminense, Jefferson is well-equipped for their current role.