Rudolf trained as a medical doctor in Germany, graduating in 1978, then relocated to New York City to study at the Art Students` League forsix months in 1980. In 1983 he married and moved to the Orangeville (Ontario) area.

Rudolf was elected to the Ontario Society of Artists in 1994 which led to exhibitions at Painted City and J. Alfred Prufrock in Toronto, Circle Arts in Tobermory and Gallery House Sol in Georgetown. He also exhibits each year in Toronto at the One of a Kind Show and the Toronto Outdoors Art Exhibition.

Rudolf`s carefully detailed, often bizarre and darkly humorous etchings and paintings are inspired by surrealism and the art of Medieval and Renaissance Northern Europe. A children`s book, The Rats Came Back, (Annick Press), was shortlisted for the Mr Christie Book Award (1995).