He mainly competed on the ATP Challenger Tour.

Draganja won 4 Challenger doubles titles and 9 ITF Futures doubles titles on the ITF Men's Circuit.

Draganja made his ATP main draw debut in doubles at the 2016 Croatia Open Umag, receiving doubles main draw wildcard alongside Nino Serdarušić.

His older brother is professional tennis player Marin Draganja.

This biographical article relating to Croatian tennis is a stub.