[citation needed] On 25 January 2008 Tabakov signed a three-year professional contract with Levski Sofia.
[citation needed] His first senior goal was on 27 February 2008, against Akademik Sofia, which was scored it at 64th minute.
[citation needed] Tabakov entered the match in the 54th minute, with a resulting 0:4 guest win for Levski.
[citation needed] On the next day, he signed his new contract with Levski, connecting him with the team until 2013.
[citation needed] On 11 January 2010, Tabakov was sent to Lokomotiv Mezdra on loan for six months.