After greatly impressing in his second spell with Salernitana, Iuliano caught the eye of several major scouts, most notably those of Serie A giants Juventus F.C.. In July 1996, Iuliano transferred to the Torino based outfit, and was a big hit right from the start, as Juve continued their Serie A and European dominance. He made his Serie A début on 15 September 1996, 2–1 win over Cagliari Calcio. In his first season with Juventus he played in 21 league games scoring a single goal. Iuliano is also known for the episode involving Ronaldo where Inter claimed a penalty. Up to this day, newspapers cite this episode and in a recent interview to the newspaper “Il Tirreno” the referee, Piero Ceccarini, clarified, “From the images it is clear that Ronaldo runs into Iuliano, not vice versa: as a matter of fact, the Juventus player falls backwards, resulting from the impact of Ronaldo running into him. I was on the pitch, a few meters away. The intention of the defender was to stop the attacker’s progression, but the attacker moved the ball and the defender did not follow it. Iuliano was stationary at the moment of contact, there are no doubts about this. I told Pagliuca (Inter’s goalkeeper) that in basketball this would be an offensive foul. Perhaps I ought to have whistled a foul in favour of Juventus”. Iuliano would become an eventual starter for the club the following season, but was hampered by injuries in the 1999–2000 season, limiting him to just 20 appearances. Juventus had what was considered as the best defence in the world at this time, and teams strongly regretted ever going down a goal to the club, as they knew how hard it would be to score one back for themselves. Iuliano formed impressive defensive partnerships with the likes of Ciro Ferrara, Moreno Torricelli, Paolo Montero, Gianluca Pessotto, Lilian Thuram, Alessandro Birindelli, Igor Tudor, Gianluca Zambrotta, Nicola Legrottaglie, and Fabio Cannavaro during his 10-year tenure with the club. After the 2004–2005 Serie A triumph, veteran teammates Paolo Montero and Ciro Ferrara called it quits on their Juventus career (this title was later revoked following Juventus’s involvement in the 2006 Calciopoli scandal). The Uruguayan opted to return to his homeland, while Iuliano remained, but in January 2005, he left for La Liga side RCD Mallorca on free transfer after having not played regularly in the first portion season. Iuliano made well over 200 total appearances for i bianconeri, scoring nearly 15 goals. During his time at Juventus, Iuliano won 4 Serie A titles, an Intercontinental Cup, an UEFA Supercup and three Italian Supercups, also reaching three UEFA Champions League finals (in 1997, 1998, and 2003) and two Coppa Italia finals (in 2002 and 2004).