Career
Early career
Born in Plovdiv, Kolev began his career in the Levski Sofia youth academy. He moved to Belgium with his family when he was 15 years old and joined local side Dessel Sport. One month later, he scored his first goal in a 2–2 away draw against Olsa Brakel.
After good seasons in Dessel, Kolev joined Belgian Second Division team ASV Geel.
He made his debut for the team in a match against White Star Bruxelles
Botev Plovdiv
Bulgarian Supercup Runner-up: 2014
In August 2012, Kolev was called up for the Bulgarian U21 squad. He made his debut in a 1–1 friendly draw against Macedonia U21 on 14 November 2012.
In September 2013 Kolev scored during the 1-3 away defeat of the Bulgarian U21 team from Russia U21. Kolev scored a goal for Bulgaria U21 in the 2-2 draw with Estonia U21 on 3 September 2014.
While Aleksandar Kolev was playing for Botev Plovdiv, he was included twice in the Bulgarian national football team but he did not participate in any official games.