Rossi appeared in Argentinian films, beginning as a child in 1938's Maestro Levita. He played Santa Claus in 1960's Todo el año es Navidad. He acted frequently in Argentinian telenovelas. On stage, he was part of the original Argentinian casts of Fiddler on the Roof (Tevye), Hello Dolly! (Horace Vandergelder), and the 1986 Eva Peron musical Eva (Don Julio).