Matiasek has directed as a guest director at several theatres in Germany and abroad, including the Hamburgische Staatsoper, the Deutsches Schauspielhaus in Hamburg, the Theater am Kurfürstendamm and the in Berlin, the in Munich, the Münchner Kammerspiele, the Staatstheater Stuttgart, the Badisches Staatstheater Karlsruhe, the Theater Bremen, the Burgtheater in Vienna, as well as at the Salzburg Festival and the Bregenzer Festspiele.