His character, Vincent "Vinnie" Taglialucci, seeks revenge for the death of his father and brother at the hands of a corrupt lawyer (Sean Penn) while accusing Carlito Brigante (Al Pacino) of assisting in the murder.
Siravo appeared briefly in the Law & Order episode entitled "Burned" (S8; Ep9) in 1997.
He played the role of Niko in seasons one and two of the NBC show The Blacklist, and in 2015 played the role of Nicholas Bianco, the husband of Anna Bianco (Kathrine Narducci), in "Love Stories", the 13th episode of the fifth season of the CBS police procedural drama Blue Bloods.
In 2019 he played the role of Cardinal Mancini, a senior Vatican official in charge of the Pope's security on his visit to New York, in the 15th episode of the first season of the medical drama New Amsterdam.
Siravo appeared as John A. Rizzo, former Acting General Counsel of the CIA in the 2019 film, The Report, executive produced by Steven Soderbergh and directed by Scott Z. Burns.