 From 1946 through 1950, he performed on stages in Jelenia Góra and Wrocław.He then returned to Kraków and became an actor at the Juliusz Słowacki Theatre.Since 1960, Zaczyk acted on Warsaw theatre stages such as Narodowy Theatre (1960–1963, 1965–1968), The Polish Theatre (1963–1965), Ataneum Theatre (1969–1974), and the Powszechny Theatre (1974–1975).