Born in Bissau, Guinea-Bissau, Moreira reached Boavista's youth ranks in 1994, but started out professionally with northern neighbours Gondomar and Gil Vicente, on loan.

He returned in 1999 and went on to have relative impact in the first team, being mainly used as a substitute and being part of the squad as the club won the Primeira Liga in his last year, although he did not appear in any matches whatsoever due to a contract dispute.

[1] With the start of the new millennium Moreira moved to Standard Liège,[2] where he quickly became a fan favourite, going on to spend five years in Belgium, a loan to Hamburger SV in 2004–05 notwithstanding.

Unsettled as the vast majority of those, he returned to his country of adoption in January, as lowly Aves battled to avoid relegation from the top level,[4] which eventually did not happen.

[20] In 2010, with the increasing development and professionalization of football in Guinea-Bissau, he decided to represent the land of his ancestors at full level, earning his first cap in October of that year at the age of 32.