Thomas has been a Principal Coach with the Bayreuther Festspiele since 2008. There he has assisted Christian Thielemann in productions of the “Ring”, “Tristan und Isolde”, “Tannhäuser", and the “Flying Dutchman”, as well as served as Head of Music for the “Ring Cycle” conducted by Marek Janowski in the 2016 and 2017 seasons.  Thomas has also worked as Principal Coach at the Salzburger Festspiele, Associate Head of Music with Komische Oper Berlin, Assistant Head of Music with Hamburg State Opera, Head of Music and Casting Consultant at Wolf Trap Opera, Assistant Conductor with Washington National Opera and Assistant Conductor with New York City Opera.  
After his undergraduate studies in piano performance at the Hochschule für Musik Stuttgart, Thomas received his Master of Music degree from the Eastman School of Music.  He continued his training at the Manhattan School of Music, where he studied with Warren Jones and received a diploma in Professional Studies in Opera Coaching.