He began his career as a midfielder,[1] but as the years passed he was utilized in defence firstly as right-back and later as a center-back.

[1] With his new side Sina played 25 league matches and scored one goal, the second of a 2–0 win versus Flamurtari Vlorë.

On 7 May 2008, Tirana lost the 2008 Albanian Cup Final match to Vllaznia Shkodër with Sina playing only in the first half.

[8] In July 2012, ahead of the 2012–13 season, manager Julián Rubio decided to strip Sina of captaincy in favour of goalkeeper Ilion Lika.

[13][14] Sina made his debut for the national team in a 1–1 draw against Switzerland on 12 October 2002 whilst playing for KF Tirana.

[19] On 9 September 2015, Sina was named the new director of Tirana's academy following the departure of Ardian Mema, another club legend.