Spending the past two seasons at La Liga side SD Eibar and Liga 1 side Steaua Bucharest, on loan from Sampdoria, the 30 year-old bringsa a wealth of experience to the A-League, having played almost 300 matches and scored 84 goals at 13 different clubs.
"What we have in Federico is a proven goal scorer who has performed consistently at the top level including in the UEFA Champions League, Serie B, Liga 1 and La Liga," said Wanderers CEO John Tsatsimas.
"At 30 years-of-age and coming off a season in one of the top leagues in world football I believe we have brought in a player who will complement our team and our style with a real attacking threat."
Piovaccari said he was excited for him and his family for the opportunity to play for the Wanderers.
"I'm really happy and can't wait to start this new challenge in my football career, I know it's going to be a wonderful experience for me and my family.
"I would like to thank the Club and Chairman for this opportunity, I'll do everything in my power to pay back their faith in me... Forza Wanderers!"
