Career
He is a Croatia youth international having earned caps with all of the youth teams beginning with the Croatia under-16 team A product of Hajduk Split academy, Jonjić was loaned out to NK Zadar in June 2009 where he made his professional debut and went on to appear in 13 matches for Zadar before he returned to Hajduk in January 2010. He later appeared in 2 matches for Hajduk in the second part of the 2009-2010 season.
After collecting only seven appearances in competitive matches in the following season, Jonjić was loaned to Zadar in June 2011 for the second time.