He is on the books of Slaven Belupo and wears shirt number 19. His main role on the pitch is Forward. He measures 187cm in height and weighs 80kg. His estimated market valuation currently stands at 50K €.

His latest transfer saw him join Slaven Belupo from FC Phoenix Banjë via on 2024-08-06.

During the Croatian Football League 2025-2026 campaign, ernis qestaj made 14 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 4 shots, with 1 on target.