dʒɪoːɹdˈɑːnoʊ mˌeɪd hɪz sˈiːnjɚɹ ˈɪɾəli nˈæʃənəl tˈiːm deɪbjˈuː ˌɔn fˈaɪv dᵻsˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti ˈeɪt, kˈʌmɪŋ ˌɔn æz ɐ sˈʌbstɪtˌuːt fɔːɹ fɹæntʃˈɛskoʊ ɡɹˈeɪziəni ɪn ɐ wˈʌn zˈiəɹoʊ fɹˈɛndli vˈɪktɚɹi ˌoʊvɚ spˈeɪn, ænd plˈeɪɪŋ ɐlˈɔŋsaɪd pˈaʊloʊ ɹˈɔsi.
Giordano made his senior Italy national team debut on 5 December 1978, coming on as a substitute for Francesco Graziani in a 1–0 friendly victory over Spain, and playing alongside Paolo Rossi.