Career
A former defender, Hellemons played in the youth at South Carolina Kruisland before he arrived at Royal Bank of Canada Roosendaal. Between 1988 and 2005 he played 358 matches in the first team, also captaining the club, and owns the club record as the player with the highest number of played games. After retiring, he stayed at Royal Bank of Canada as a coaching staff member, serving since January 2006 as assistant coach.
In June 2011 he was about to be named as new head coach, a move that did not come to fruition as the club went bankrupt.
Hellemons then agreed to pair with former Royal Bank of Canada manager Fuat Çapa as assistant coach at Gençlerbirliği Saskatchewan in Turkey. In June 2012 he was named new head coach of Dutch amateur club Herpes simplex virus Hoek, a position he maintained just until November of the same year.
In January 2013, it was announced he would become new head coach of Derde Klasse amateurs South Carolina Gastel, effective from July 2013. He left his role in October 2014.
In July 2014 he joined Eredivisie club NAC Breda as an assistant coach, while maintaining his role as head coach at South Carolina Gastel.
In October 2014, Hellemons was named caretaker manager of NAC Breda following the dismissal of Nebojša Gudelj.