Mijailović was a member of Red Star Belgrade and Partizan youth categories.
[2] He made his first senior appearances during the 2013–14 season, in which he noted Serbian First League 17 caps for Teleoptik.
After le left the club, he spent 6 months playing with Srem Jakovo, before he joined Serbian SuperLiga side OFK Beograd at the beginning of 2016.
[3] Next he moved to Kolubara, where he spent the first half of the 2016–17 season without official matches.
This biographical article related to a Serbian association football defender is a stub.