In the season of 1924/1925 he started his career at Olomouc Theatre as actor and later on as Theatre Director. In 1930 he came to Prague as Theater Director of Vinohrady Theatre. He stayed at Vinohrady Theatre till the end on the 2nd World War. During his time at the Vinohrady Theater, Salzer has directed over 120 plays by world and Czech authors (incl. W. Shakespeare, Oscar Wilde, Carlo Goldoni, G. B. Shaw, F. Schiller, Stefan Zweig, Jiří Mahen, J. K. Tyl, Viktor Dyk, V. K. Klicpera, etc.) 