Born in Razlog, but raised in Dobrinishte, Galchev started his career in the youth system of Pirin Blagoevgrad.

He quickly became part of the main team and until the end of 2008–09 season earned 15 appearances playing in the A PFG, scoring one goal.

On 27 March 2010, he played in his first Eternal Derby against Levski Sofia after coming on as a substitute during the second half of the game.

[13] Galchev scored the winning goal for the first victory of Septemvri in First League for the season on 22 July 2017 in match against Pirin Blagoevgrad.

[14] Galchev earned his first call-up to the Bulgaria national side in March 2011 for the Euro 2012 qualifier against Switzerland and the friendly match versus Cyprus, but was not selected to play in any of these games.