Kew Jaliens started his career at Sparta and made his league debut aged 18 in a 2–1 away win over FC Groningen on 25 May 1997.

Jaliens signed for Willem II in 1999 and made his league debut on 28 August in a match against FC Den Bosch.

[6] Jaliens was reportedly sacked from the Jets by owner Nathan Tinkler following a player revolt midway through the 2014–15 A-League season.

Barely two weeks after his departure from Newcastle, Jaliens joined A-League rival Melbourne City on an injury replacement short-term contract.

Jaliens played in all three group stage games in the tournament against United States, Japan and Nigeria, but missed the quarterfinal loss against Argentina due to yellow cards ban.