[2] Born in Miratovac, a small town in the municipality of Preševo as a member of Albanian ethnic group,[3] Zulfiu started playing football at the age of 10.
[10] In summer 2017, Zulfiu joined the first team of Radnik Surdulica under coach Simo Krunić,[11] but moved on new loan deal to Ozren Sokobanja shortly after.
[4] After the whole first-half season in the third-ranked league, a loan deal was terminated and Zulfiu returned to Radnik ending of November same year.
[13] On 29 November 2017, Zulfiu made his official debut for Radnik Surdulica, replacing Miloš Stanković in 69 minute of the Serbian SuperLiga match against Red Star Belgrade.
[15] In February 2018, Zulfiu signed his first four-your professional contract with Radnik,[16] after which he extended his loan deal to Ozren until the end of 2017–18 campaign.