Baja was a graphic artist, painter, stage- and costume designer mainly active between the two world wars.
He studied in France and Germany; after World War One he became a prisoner of war in Russia; he only returned to Hungary in 1922. He was working on stage designs for many theatres in Budapest. His poster designs belong to the Art Deco style of the 1920’s and 1930’s. They contain elements of modernism and folk art; most of them are very decorative. .