Career
Born in Osasco, São Paulo, Guilherme represented Portuguesa, São Paulo and Palmeiras as a youth. In 2013 he moved to Avaí, but failed to make a first team appearance for the club In March 2014 Guilherme was loaned to Tokyo Verdy until December.
He returned to Avaí after contributing with no minutes, and was subsequently released.
On 29 January 2015 Guilherme returned to his first club Portuguesa.