[1] Lončarević was born in Zagreb, where he graduated in Croatian studies from the Faculty of Humanities and Social Sciences in 1985 with thesis Historijski roman Augusta Šenoe ("Historical romans of August Šenoa").
He was a redactor and lector for INA (1986-7) and Zagrebačka banka (1989-94)[2] as well as in the religious-philosophical magazine Obnovljeni Život ("Renewed Life", 1988-9).
[2] He was also an auxiliary counselor in the Office of the President of the Republic since January 1999.
[2] Later, he was a university professor at the Faculty of Philosophy and Religious Studies in Zagreb (hr).
[3] He was a consultant for analytics and domestic politics of the Croatian president Kolinda Grabar-Kitarović.