Career
He is the first player ever signed by Atlanta United. Prior to joining Atlanta, Tambakis played for Panathinaikos of Superleague Greece. He promoted to the first team on July 1, 2011 signing a contract which keeps him in Panathinaikos until 2016.
On February 2,2015 VVV-Venlo and Panathinaikos reached agreement on the lease of Alexandros Tabakis.
On January 25, 2016 Tambikis transferred from Panathinaikos to Atlanta United Football Club on a free transfer. He became the first player to be signed by the club with the transfer.
He was immediately sent on loan to third division, Charleston Battery for the 2016 USL season, ahead of United"s debut season in 2017. Panathinaikos.