||This biographical article needs additional citations for verification. (April 2010)|
|Date of birth||4 December 1984|
|Place of birth||Palermo, Italy|
|Height||1.80 m (5 ft 11 in)|
|2002–2004||→ Messina (loan)|
|2004–2005||→ Tolentino (loan)||6||(0)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Early career and Roma 
Born in Palermo, Sicily, Giambruno started his career at Messina. In summer 2002, he was exchanged with Armando Guastella in co-ownership deal, both tagged for €2.5 million nominal value for 50% rights. He signed a 5-year contract. In June 2004, Roma gave up the remain rights of Guastella and Messina sold the remains rights of Giambruno to Roma for a fee of €70,000. It made Roma registered a financial income of €2.43 million for Giambruno and €2.5 million financial cost for Guastella, which in total a cost of €70,000.
Lega Pro clubs 
In 2009-10 season, he worked as Nicholas Caglioni's backup. Without a club for 1 season, in July 2011 he joined Calcio Como, replacing departed Paolo Castelli. Giambruno made his debut in the first round of 2011–12 Coppa Italia.
- "Approvazione Situazione Mensile al 31 maggio 2004". AS Roma (in Italian). 2004-06-30. Retrieved 14 September 2011.
- "BILANCIO DI ESERCIZIO AL 30 GIUGNO 2006" [2005/06 Annual Report]. AS Roma (in Italian). Retrieved 14 September 2011.
- Stefano Sica (2009-03-24). "UFFICIALE: Giambruno alla Pro Patria". Tutto Mercato Web (in Italian). Retrieved 2010-04-01.
- "Prosegue la preparazione. Domani prima amichevole.". Calcio Como (in Italian). 29 July 2011. Retrieved 14 September 2011.
- "Como Prato: 1 - 2". Calcio Como (in Italian). 7 August 2011. Retrieved 14 September 2011.