Veljko Birmančević

Birmančević was called in U18 national during the 2015, and scored one goal in a friendly match against Poland. In August 2016, he was called into the Serbia U19 squad for the memorial tournament "Stevan Vilotić – Ćele". Birmančević scored his first goal for Serbia U19 in a match against Sweden, played on 14 November 2016. In January 2021, Birmančević was called up to the Serbian senior squad by coach Ilija Stolica. He made his debut for the team in a friendly match against the Dominican Republic on 25 January and, four days later, made his second appearance against Panama. On 28 May 2024, Birmančević was named in the Serbia squad for UEFA Euro 2024. He appeared as a substitute for Andrija Živković in the team's opening match of the tournament against England, making his first competitive appearance for Serbia in the 1–0 defeat. He also played in group stage match against Slovenia. Serbia finished fourth in the group.

Partizan

Birmančević signed his first professional contract with Partizan on 12 February 2016, and got the jersey number 30. He made his Serbian SuperLiga debut on 21 February 2016 in a match against OFK Beograd. Later, during the spring half-season, coach Ivan Tomić used him as a back-up player in matches against Radnik Surdulica and Vojvodina. In summer 2016, Birmančević was loaned to Teleoptik, where he scored 4 goals on 22 matches in the Serbian League Belgrade for the 2016–17 season. He also extended his loan to Teleoptik for the 2017–18 Serbian First League campaign. He was sold from Malmö FF to Toulouse for a sum around €5 million.

Sparta Prague

In June 2023, Birmančević was loaned to Sparta Prague for one season with an option to buy. He signed for the club permanently on 5 March 2024, official from 1 July. In May 2024, Birmančević helped the club to win its second championship title in two seasons and domestic cup. He was awarded as the player, midfielder and foreign player of the 2023–24 season by the League Football Association.

Loan to Getafe

On 2 February 2026, Birmančević joined La Liga club Getafe on a half-year loan deal with an option to make the transfer permanent.

Ferencváros

On 28 August 2026, Birmančević signed a contract with Nemzeti Bajnokság I club Ferencváros.

Club

As of 27 April 2025

International

As of 31 March 2026

Partizan

Serbian Cup: 2015–16 Teleoptik

Serbian League Belgrade: 2016–17 Malmö FF

Allsvenskan: 2021 Svenska Cupen: 2021–22 Toulouse

Coupe de France: 2022–23 Sparta Prague

Czech First League: 2023–24 Czech Cup: 2023–24 Individual

Allsvenskan Young Player of the Year: 2021 Svenska Cupen Top goalscorer: 2021–22 Czech First League player of the season: 2023–24 Czech First League midfielder of the season: 2023–24 Czech First League foreign player of the season: 2023–24