Šestić began his professional career at the JNA Symphony Orchestra in Belgrade, Serbia. He was a musician at the Military Orchestra in Split, Croatia, where he lived from 1984 to 1991.
The renowned musician Šestić began his career with the prestigious JNA Symphony Orchestra in Belgrade, Serbia. Later, he joined the esteemed Military Orchestra in Split, Croatia, where he spent nearly a decade from 1984 to 1991.