Koljić started his professional career at Triglav, before joining Krupa in 2014. A year later, he moved to Borac Banja Luka. The following year, he went back to Krupa, who loaned him to Lech Poznań in 2018. Later that year, he signed with Universitatea Craiova.
Koljić made his senior international debut for Bosnia and Herzegovina in 2018.
Club career
Early career
Koljić started playing football at a local club, before joining youth academy of Slovenian team Maribor in 2011. He made his professional debut playing for Triglav against Olimpija Ljubljana on 26 October 2013 at the age of 18.[2]
In January 2016, Koljić returned to Krupa.[6] He scored his first career hat-trick in a triumph over Rudar Prijedor on 29 November 2017.[7] In February 2018, he was loaned to Polish side Lech Poznań until the end of season.[8]
Universitatea Craiova
In August, Koljić was transferred to Romanian outfit Universitatea Craiova for an undisclosed fee.[9] He made his official debut for the team against Dinamo București on 1 September and managed to score a goal.[10]
In July 2020, he extended his contract until June 2025.[11]
He won his first trophy with the club on 22 May 2021, by beating Astra in Cupa României final.[12]