He took the Kapellmeister career, working in Osnabrück,[1] at theatres in Wiesbaden and Saarbrücken, and with the Staatsorchester Halle, to learn a large repertory in opera and concert.

[3][4] Bosch is a regular guest at the Hamburgische Staatsoper, where he first conducted Beethoven's Fidelio in 2005, later Mozart's Die Entführung aus dem Serail, Weber's Der Freischütz, Verdi's Falstaff and York Höller's Der Meister und Margarita.

[3] His rendition of Wagner's Tristan und Isolde, with Vincent Wolfsteiner and Lioba Braun in the title roles, was broadcast live on radio and to 50 cinemas in Germany and Austria.

[5][6] A reviewer noted a sound world with clear contours ("Konturscharfe Klangräume"), serving the dramatic action.

He will leave the GMD position in Nürnberg after the 2017/18 season to focus on teaching in Munich, where he will lead the university orchestra.