He gained his master's degree in 1999 in the field of Geo-sciences, branch Physical Geography, from the Faculty of Science of the University of Zagreb.

In 2007, he gained his PhD in the field of Geo-sciences, branch Physical Geography, from the Faculty of Science of the University of Zagreb.

[3] After graduation in 1986, Šundov started working as a Special Adviser in the Croatian Territorial Defense HQs in Split.

During the Croatian War of Independence (1991–1995), Šundov at first served as an Assistant Chief of Staff for Operations of the 4th Brigade of the National Guard (1991–1992), and later as its Commander (1992–1995).

[4] In 2016, President Kolinda Grabar-Kitarović and Prime Minister Tihomir Orešković named him Chief of the General Staff of Armed Forces of Croatia.