Krešimir Batinić was born on April 2, 1983 in Osijek, where he finished his elementary and secondary education (High School of Natural Sciences and Mathematics and Franjo Kuhač Music School, majoring in music theory). In 2002 he enrolled in the conducting class of maestro Miroslav Homen at the Ino Mirković College of Musical Arts in Lovran. In January 2005 he continued his studies at the Zagreb Academy of Music in the class of maestro Vjekoslav Šutej.
In 2006 he landed his first professional collaboration, working on the Disney musical Beauty and the Beast with the Zagreb City Theatre Trešnja. The musical marks his professional debut in November of the same year, and was also his choice for his graduation performance in January 2007. He has continued to cooperate with the theatre as its musical associate up to the present.
Since May 2007 he has been a permanent collaborator with the Zagreb City Theatre Komedija, where he has worked both as accompanist and conductor. He has staged and conducted many performances at the theatre: The Beautiful Helena by Jacques Offenbach; Grease by Jim Jacobs and Warren Casey; Jalta, Jalta by Milan Grgić and Alfi Kabiljo; Aida by Elton John and Tim Rice; Đerdan by Jakov Gotovac; Operetni Express 2 013 by Vid Balog and Krešimir Batinić; Cabaret by Joe Masteroff, Fred Ebb and John Kander; Monty Python's Spamalot by Eric Idle and John Du Prez; Spli’ski akvarel by Ivo Tijardović; and Gräfin Mariza by Emmerich Kálmán. He served as managing director of the Zagreb City Theatre Komedija from March 2017 until February 2020.
He regularly collaborates with the Zagreb Philharmonic Orchestra. An especially successful ongoing cooperation is the Fil(m)harmonia project, for which he has conducted the orchestral accompaniment to a number of silent movies: Sergei Eisenstein's The Battleship Potemkin; Charlie Chaplin's The Kid, The Circus, The Idle Class, and A Dog's Life; and Buster Keaton's The General.
In February 2016 he conducted the world premiere of the sinfonietta “Luminosity” by Malek Jandali which was performed by the Zagreb Philharmonic Orchestra in a gala concert held at the prestigious Carnegie Hall in New York City.
He has been working as an assistant at the Academy of Arts in Osijek since 2015.