Career
Da Silva began his career Palmeiras, signing a five-year contract with the club in 2003. He made his professional debut for Palmeiras in a 0–1 home defeat to Grêmio in the Campeonato Brasileiro on 28 May 2006. Since 2008 he had been loaned out to other Brazilian clubs.
His contract was also extended until June 2011.
lieutenant was renewed again in 2010. He was injured in June and missed the rest of the season.
In July 2012, William moved to Série B team Joinville Esporte Clube on a free transfer. The following year, William joined Korean side Busan IPark.
He made his debut in a 2–2 draw against Gangwon Football Club on 3 March 2013, and scored his first goal against Football Club Seoul two weeks later.
In 2014, da Silva signed with Mexican side Quéretaro. While at Querétaro he would reach the finals of the Clausura tournament, finishing runner-up to Santos Laguna. On 9 December 2015, it was announced that da Silva was sold to Club América, signing a three-year contract.
He called the move to América "one of the most important challenges of my career", and a "dream realized".