Nikola Čumić

Sloboda Užice

After he passed all youth categories of Sloboda Užice, Čumić joined the first team for the 2014–15 season. He made his senior debut on 13 May 2015, against Mačva Šabac. During the 2015–16 Serbian First League season, Čumić made 12 appearances, and also made one appearance in Serbian Cup, against Loznica.

Metalac Gornji Milanovac

In summer 2016, Čumić moved to Serbian SuperLiga side Metalac Gornji Milanovac and signed a three-year contract with new club. He made his SuperLiga debut on 29 July 2016, replacing Walberto Caicedo in 71 minute of the match against Red Star Belgrade. Čumić noted his first appearance in starting 11 in a match against Voždovac, played on 14 August 2016.

Radnički Niš

In winter 2018, Čumić signed with a Radnički Niš.

Olympiacos

On 19 December 2019, Olympiacos officially announced the signing of Čumić for a transfer fee estimated in the region of €500,000; he would remain in his former club until the end of the 2019–20 season. On 16 September 2020, he joined Sporting de Gijón of the Spanish Segunda División on loan for one year. On 31 August 2021, he joined Luzern on a season-long loan.

Vojvodina

On 1 September 2022, Čumić signed a three-year deal with Serbian SuperLiga club Vojvodina, for an undisclosed fee.

Rubin Kazan

On 14 September 2023, Čumić signed a four-year deal with Russian Premier League club Rubin Kazan, for an undisclosed fee. On 1 February 2026, Čumić was loaned to…

Čumić was called up to the senior Serbia national team for the first time in June 2023 for a friendly against Jordan, but remained on the bench in the game. He made his debut on 12 October 2024 in a UEFA Nations League game against Switzerland. He substituted Veljko Birmančević in the 88th minute, as Serbia won 2–0.

As of match played 19 September 2026

Individual

Serbian SuperLiga Player of the Week: 2023–24 (Round 4)