Marítimo; a starter from his beginnings, he made his Primeira Liga debut in a 1–0 away loss against Vitória de Setúbal, and went on to draw comparisons to his compatriot Everton Machado who played in the island of Madeira from 1988 to 1996 with great success.
[1] In the 2004–05 season, as Marítimo finished seventh with one of the strongest defensive records, Marcos was named Goalkeeper of the Year in the country.
[2] In July 2010, after one year in Italy with lowly AC Renate, Marcos returned to Portugal and signed with S.C. Braga, as the club had lost Eduardo and Paweł Kieszek in the off-season.
[3] He was released by the Minho side in January 2012,[4] with only one competitive appearance to his credit, a 4–0 away win against F.C.
[6] He returned to his first club Paraná the following transfer window, achieving promotion to the Série A in 2017 and retiring immediately after; across his two spells, he appeared in an all-time best 367 matches for the team based at the Estádio Vila Capanema.