Dutch clubs: Helder began his professional career in the Netherlands, most notably with Vitesse Arnhem and later NAC Breda and Sparta Rotterdam among others.
Arsenal (England): Helder joined Arsenal in February 1996 from Vitesse. He made a limited number of appearances for Arsenal during the 1995–96 season. While at Arsenal he played mainly as a winger; competition for places and injuries restricted his impact and game time.
Later career: After leaving Arsenal he returned to the Netherlands and also had spells in Portugal (e.g., Benfica on trial but no major impact) and played for several lower-league clubs before retiring from professional football.
International career
Helder was capped by the Netherlands at youth levels but did not have a prolonged senior international career with the Dutch national team.
After football
Following retirement Helder has been involved in various activities including media appearances and local football projects. His post-playing life included public discussions about personal difficulties he faced after his professional career ended.
Notable facts
Remembered for his pace and direct style as a winger.
Part of the mid-1990s Arsenal squad but not a regular starter during his time at Highbury.