Jožef Bisak completed his primary and secondary music education at the "Isidor Bajić" Music School. He graduated in viola from the Academy of Arts in Novi Sad. During his education, he collaborated with numerous renowned musicians and attended masterclasses with Julija Hartig (Radio Filharmonisch Orkest, Amsterdam), Prof. Zoran Jakovcic (Columbus State University, USA), Prof. Pierre Henri Xuereb (Conservatoire National Supérieur de Paris), Prof. Gerard Causse (Eskuela Superior de Musica Reina Sofia), Felix Schwarz (Principal Viola, Staatskapelle Berlin), and Prof. Dejan Mlađenović (Faculty of Music, Belgrade).
Since 2006, he has been a solo violist in the Orchestra of the Serbian National Theatre Opera. In October 2015, he successfully auditioned for the position of solo violist in the RTV Slovenia Symphony Orchestra. He is also a permanent member of the Vojvodina Symphony Orchestra, No Borders Orchestra, and the chamber orchestra "Camerata Novi Sad". Since 2016, he has been a member of the Acies Quartet (Austria), with which he regularly performs and records. Alongside Robert Lakatoš and Marko Josifoski, and on the recommendation of the former quartet member Dragan Đorđević, he co-founded the Rubikon string quartet. He is currently employed as a professor of chamber music at the Faculty of Music Arts in Belgrade.
As a soloist, he has performed with the Symphony Orchestra of the Academy of Arts in Novi Sad and the chamber orchestra "Camerata Academica", collaborating with renowned conductors and soloists. With Benjamin Ziervogel, he performed Mozart's "Symphony Concertante" on a concert tour with the La Filarmonica Sannita orchestra in 2019 (Italy, Switzerland).
He has participated in numerous prestigious festivals such as the Ljubljana Festival, Maribor Festival, BEMUS, NOMUS, SOMUS, NIMUS, the Chamber Music Festival "Blisko" with Stefan Milenković, ZUM, Ledamus, and the Ravanelius Festivals.
In 2013, as a solo violist in the No Borders Orchestra, he participated in the recording of a CD for Universal Music GmbH Austria and Deutsche Grammophon. That same year, as a solo violist in the Žebeljan Orchestra, he participated in the recording of the chamber music CD "Balkan Bolero" by Isidora Žebeljan, released in London in 2014. With the Acies Quartet, he recorded a CD for the Gramola record label in Vienna in 2016 (winning the Supersonic award from Pizzicato magazine), and in 2019, they recorded works by Glenn Gould and Friedrich Gulda for the same label.