During his club career, Janich played for Atalanta (1956–58), Lazio (1958–61), and Bologna (1961–72) in Serie A, as well as Lucchese (1972–73) in Serie C. He played for the Coppa Italia winners in 1958 (Lazio) and 1970 (Bologna). He was a member of the 1963–64 Serie A champions, Bologna. Over his entire 448-match career, he never scored a goal. He set a record that he played more games never having received a red card or been expelled from a match.