Career
Waalkens started his career with Avanti"31. At young age he was scouted by both Football Club Den Bosch and Willem World War II Because of the commuting distance he made the choice for Football Club Den Bosch. A few years later Willem II was interested again to sign him.
This time he made the choice for the PSV Eindhoven youth academy.
Although PSV wanted to give him a chance in the reserve squad, Waalkens signed a two-year deal (with option) with Willem World War II August 9, 2009 he made his professional debut in the awaymatch against Football Club Utrecht (1–0 loss).