Jovančić joined Borac Čačak in 2012 at the invitation of club director Slobodan Ilić, who noticed him after he played for the amateur selection of the Football Federation of Belgrade.

[1] On 2 December 2015 Jovančić played for Borac Čačak in a 1-5 upset which eliminated heavily favored Red Star Belgrade in the second round of the 2015-16 Serbian Cup.

[2] On 29 May 2018 Jovančić signed a two-year contract with Red Star Belgrade, with an optional one-year extension.

[8] On 6 December 2024, Kyzylzhar announced that Jovančić had returned to Astana after his loan had expired.

[9] On 5 January 2025, Jovančić returned to his native Serbia, joining Čukarički on a one-year deal.