In July 2017, Kallaku signed his first professional contract and joined Kategoria Superiore side Laçi.[2] He took the squad number 59, the number of his deceased father's birthday,[3] and made his professional debut on 10 September in the opening matchday away against Partizani, coming on the second half as a substitute and netting a tap-in after a howler from goalkeeper Dashamir Xhika, as Laçi won 2–0.[4]
Teuta return
On 13 January 2023, Teuta announced to have signed Kallaku on a permanent deal.[5]
International career
Kallaku made his under-21 debut on 25 March 2017 in the friendly against Moldova which ended in a goalless draw.[6]
^Andi Deçka (10 September 2017). "Iuliano debuton me humbje, mundet Partizani" [Iuliano debuts with a loss, Partizani defeated] (in Albanian). SuperSport Albania. Archived from the original on 11 September 2017. Retrieved 11 September 2017.