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Dmitry Sumin is the Head of Products at AB Handshake Corporation since August 2020. Prior to working at AB Handshake, Dmitry held roles such as Head of Roaming and Interconnect at Easy4 from September 2018 to March 2020, and Senior Roaming Specialist at MTS Group from September 2005 to September 2018. Dmitry graduated from Lomonosov Moscow State University in 2006 with a specialist degree in History.