Born in Novi Sad, Devetak passed Vojvodina youth school.
He made an official debut for Vojvodina in the 37th fixture of the 2016–17 Serbian SuperLiga season, played on 21 May 2017 against Javor Ivanjica.
[2] In June 2017, Devetak signed his first professional contract, penning a four-year deal with the club.
[3] On 5 August 2022, the newly-promoted Italian Serie B club Palermo announced the signing of Devetak on a three-year contract.
[5] On 13 July 2023, Palermo announced to have loaned out Devetak to Croatian side NK Istra 1961, with an option to sign the player permanently at the end of the season.