He is currently a goalkeeping coach for Serie A club Genoa.

Though he made four appearances for Italy's Under-21 squad, Fiori was never called up for the senior side.

He has made only two official appearances in eight seasons with the club: a 4–2 loss in Serie A to Piacenza on 24 May 2003, and a 1–0 Coppa Italia win over Sampdoria as a first half injury replacement for Christian Abbiati on 18 December 2003.

[1] After a brief interlude with the Chinese side Shenzhen, and then Spanish side Deportivo La Coruña, a club coached by former teammate Clarence Seedorf, Milan announced the return of Fiori as goalkeeper coach on 5 July 2018.

Fiori graduated with a bachelor's degree in law from University of Rome La Sapienza on 12 July 2007.