After a friendly match against Corinthians in the age of 15, Júlio was invited by a scout to train at their youth team, with which he won the 2004 and 2005 editions of the Copa São Paulo de Futebol Júnior.

[2] After Corinthians' main goalkeeper, Fábio Costa was barred by the coach Daniel Passarella and his immediate reserve Tiago suffered 5 goals in a derby match against São Paulo FC, Júlio Cesar's chances began to rise.

In a match against Botafogo, Júlio César suffered a compound fracture in his left pinky finger, but he soldiered on, as Corinthians had already made its 3 substitutions for the game.

[6] After overcoming harsh criticism from the fans, Júlio César finished 2011 as the absolute main goalkeeper for the team, helping Corinthians win the 2011 Campeonato Brasileiro.

[8] The elimination against the Campinas squad AA Ponte Preta in the quarter finals, in which Júlio had committed "grotesque failings", suffering three goals against a weaker team caused manager Tite to replace him with the former goalkeeper of PSV Eindhoven, Cássio.