Career
Janjetović started his career in the youth ranks at NSWPL club Sydney United before being spotted by Sydney Football Club and was signed to their Youth League squad alongside fellow young stars Matthew Jurman, Kofi Danning, Rhyan Grant and Anthony Golec. He helped Sydney Football Club to the inaugural title, making a significant impression on his peers with a number of good performances. In 2010, he would return to Sydney United being too old to be eligible for a spot in Sydney Football Club"s youth team and was not offered a senior team contract at the club due to an onging neurological issue in his right arm which forced him into an extended period on the sidelines.
Later that year, Janjetović was loaned out to fellow A-League club Brisbane Roar as injury cover for Griffin McMaster as regular custodian Liam Reddy was out injured, however did not make an appearance for the Roar in his time at the club
Melbourne Heart
Janjetović joined Melbourne Heart on a two-game loan stint for their Hawaiian Islands Invitational in February 2012. He played against both American club Colorado Rapids and Korean side Busan IPark.
Sydney Football Club
On 18 June 2012, it was announced that Janjetović had signed a 2-year deal with Sydney Football Club to bolster their goalkeeping ranks. Janjetović trialled for a number of weeks at the club against former Gold Coast United goalkeeper Jerrad Tyson, QPR youth goalkeeper Aaron Lennox and Sutherland goalkeeper Nathan Denham.
He made his Sydney Football Club debut on 2 December 2012 at Allianz Stadium keeping a clean sheet in Sydney’s 0-0 draw with Melbourne Heart.
