Early career Gočmanac started training at the local
Kopaonik Brus. From there, he moved to
OFK Beograd, and after spending a year at that club, in the summer of 2017, he joined the youth team of
Partizan. After another year, he was transferred to
Teleoptik, and later signed a scholarship contract with the club. The following year, he signed a professional contract, and thereafter, he was a regular goalkeeper in the cadet category.
Partizan He joined the first team training in early February 2021, and for the first time, he was on the roster for a match against
Novi Pazar in the 21st round of the
Serbian SuperLiga. By the end of the season, he was on the bench a few more times and regularly played for the youth team. After that, he was loaned to
Teleoptik, where he spent two seasons and played in the
Serbian League Belgrade. During this time, he occasionally trained with the first team.
Mačva Šabac In 2023, he joined
Mačva Šabac, signing a one-year contract with an option for an additional season. He became a regular in the team at the start of the
2023–24 season in the
Serbian First League.
Vojvodina In mid-February 2024, Gočmanac signed a contract with
Vojvodina, but according to the agreement, he remained on loan at Mačva until the end of the season. According to
Sport Klub, the transfer fee was estimated at five million dinars, with ten percent of the next transfer included. He reported to the coach of the
Novi Sad club,
Božidar Bandović, at the beginning of preparations for the
2024–25 Serbian SuperLiga season. On 31 July 2025, Gočmanac signed a contract extension with the club until the end of 2029 season. ==International career==