In 2001 and in 2002, Walker won the Dutch reserves competition title in the Beloften Eredivisie with Jong Ajax.
He also made a great impression when he helped the reserves team to a semi-final appearance in the KNVB Cup in 2002.
During the 2002–03 season, Walker played on loan of the Belgian satellite club Germinal Beerschot in Antwerp making a total of 21 appearances while scoring one goal.
[1] On 6 January his contract was terminated and he returned to Brazil where he played for Atlético Mineiro.
He then continued his career playing for Juventude, Náutico, Itumbiara, Rio Claro, Santo André, Sertãozinho and Botafogo SP.