Ruben began his pedagogic activities at the Sarajevo Music academy in 2000 and has been serving since 2005 as a Professor of piano at the Zagreb University Music Academy. In 2017 he was invited to be a guest Professor in Liechtenstein Music academy. 2018-2019 he takes professorship in Brescia Music Academy “Talent Music Master Courses”.

During last ten years Ruben raised a new generation of young pianists who achieved tremendous results and became prize winners of various international competitions. Despite of their young age some students succeed to make an outstanding international career. The most prestigious competitions and the most prominent winners are Ivan Krpan – 1st Prize on Ferruccio Busoni International Piano Competition in Bolzano 2017, 1st prize winner on Ettlingen International Piano Competition 2016, and Aljosa Jurinic – 1st prize winner of Robert Schumann International Piano Competition in Zwickau 2012, Finalist of Frederic Chopin International Piano Competition in Warsaw 2015, and 5th prize winner of ” Queen Elizabeth” International Piano Competition in Brussels 2016. Both of them have also got “Ivo Vuljević” National prize as the best young musicians in Croatia.

As part of his pedagogical work Ruben holds master classes and seminars on a regular basis in Croatia, Italy, Liechtenstein, Slovenia, Russia, Armenia etc. He is also frequently invited as a jury member at various international music competitions. His noteworthy projects include the founding of the piano summer school in Makarska (Croatia) in 2005, together with Julia Gubajdullina. The seaside piano master course has since evolved into one of the most prominent events for young pianists in the region.