He studied acting at the Max Reinhardt Seminar in Vienna in the master class of Klaus Maria Brandauer and at the Conservatoire National Supérieur d'Art Dramatique in Paris.

[6][7][8] He has played in Austrian and German movies, TV-films and television series, including Die Manns – ein Jahrhundertroman (directed by Heinrich Breloer: 30th International Emmy Awards), The Shine of the Day (by Tizza Covi and Rainer Frimmel),[9] Die Auslöschung (director: Nicholas Leytner),[10] Tomcat (by Händl Klaus)[11] and Animals (directed by Greg Zglinksi).

[19] Die Wannseekonferenz (2022, directed by Matti Geschonneck) is a multi-award winning[20] German TV docudrama:[21][22] On January 20, 1942, leading representatives of the Nazi Regime meet at Wannsee in Berlin at the invitation of Reinhard Heydrich (Philipp Hochmair).

The sole topic of discussion is the so-called "Final Solution of the Jewish Question" by the National Socialists: the organization of the systematic mass murder of the Jews of Europe by the millions.

[32] Burgtheater Vienna Deutsches Theater Berlin Schauspielhaus Zürich Staatstheater Hannover Thalia Theater Hamburg Hamburger Kammerspiele Salzburg Festival Independent productions In 2017, Hochmair won the Diagonale Festival Award in Graz for his performance in Tomcat.