Stanchev made his official debut for Levski's senior team on the 13 June 2009 in a match against Pirin Blagoevgrad.

On 20 March 2010, he was in the starting line-up for Levski and played the full 90 minutes, earning praise for his performance in the 3-0 home win against Slavia Sofia.

On 27 March 2010, he played in his first Eternal Derby against CSKA Sofia, but was withdrawn in the 39th minute after sustaining an injury.

[2] On 2 August 2009, Stanchev was loaned out for one year to Pirin Blagoevgrad together with his team-mate Ivan Tsachev.

His first appearance in an official match came on 11 August 2012, in the 3-0 home win over Slavia Sofia.