Daniel Rumler studied at the Pardubice Conservatory under Jiří Kuchválek, at the Academy of Performing Arts in Prague under prof. Jiří Tomášek and at the Hochschule Luzern - Musik under prof. Igor Karško and prof. Giuliano Carmignola. He completed his pedagogical education at the Hochschule Luzern - Musik in the Master programme in Music Pedagogy. He is currently studying as an internal doctoral student at the Academy of Arts in Banská Bystrica under the supervision of doc. Ján Krigovský. 

Between 2015 and 2018, he worked in the Swiss orchestras Musikkollegium Winterthur, Sinfonieorchester Biel-Solothurn and Camerata Zürich. Between 2018 - 2023, he was a member of the first violin group in the Slovak Philharmonic. Daniel Rumler is also a historically informed musician and performs as concertmaster with Collegium Wartberg and Volantes Orchestra.  He is a member of the international Visegrad Four string quartet called “V4 String Quartet”.  As a chamber musician, he has performed at major European festivals. 

He regularly collaborates with the Slovak Youth Orchestra, and since 2021 he has been teaching violin at the Conservatory in Bratislava.

Daniel Rumler is also a composer and arranger. His transcriptions have been recorded for the ECM label and Swiss Radio SRF and his works were performed in renowned institutions, such as Tonhalle Zürich or Slovak Philharmonic.