[1][2] Ostojić was born in Sremski Karlovci, Archduchy of Austria in 1730.
He collaborated with monk-painter Amvrosije Jankovićon church projects in Sremski Karlovci.
[9] Additionally, he created the iconostasis of the Church of Saint Demetrius in Buda (lost in the Great Tabán Fire of 1810), and most notably, the iconostasis in the Annunciation Church in Szentendre.
[10] Ostojić was under the influences of Russian and Ukrainian Baroque masters.
[2][13] Ostojić passed away in Novi Sad, Archduchy of Austria, in 1791.