Born in Lubango, Portuguese Angola, Constantino amassed Portuguese top division totals of 140 games and 48 goals over the course of seven seasons, representing in the competition S.C. Salgueiros, Leça F.C. and S.C. Campomaiorense.
Born in Nampula, Portuguese Mozambique, Fonseca played 14 years as a senior, beginning with F.C. Barreirense in the third division and moving straight to the top level with Leça F.C. in the 1995–96 season, starting in 21 of his league appearances as the club finished 14th and narrowly avoided relegation.