Stoychev began his career in the local FC Dragoman at the age of 11, before moving to Septemvri Sofia academy in 2018.

He made his professional debut for the club in 2020 on his 17th birthday, in a league match against Litex Lovech.

[2] On 17 October 2022, in a league match against Levski Sofia, he received an injury that ruled him out until end of the season.

[3] Ironically, before this, Levski had contacted him and expressed a desire to sign him during the winter break, but the transfer failed.

This biographical article related to association football in Bulgaria, about a defender, is a stub.