He began his acting career as a teenager, appearing in various TV series including Baantjer and Onderweg naar Morgen.

Klerk was a guest actor in 4 episodes of Het Glazen Huis dramaseries from Endemol.

[4] His theatre credits include; Grease - (Doody), Jekyll & Hyde - (Simon Stride), and Tita Tovenaar (Tom de Tuinman).

In October 2012 Klerk was backing vocalist for Mika at his European tour “The Origin of Love".

[9] Klerk played in the NET 5 TV series “Achter Gesloten Deuren” (Behind Closed Doors)[10] in the role of Thomas Henegouwen, broadcast in fall 2012.