In 2000, Timotheus joined the cast of e.tv. soap opera Backstage with the role Ziggy Arendse. The role became very popular where he played the role until the end of the show in 2007. Since 2005, his own show titled Tjooning was started within the same show Backstage. The show is five minutes long which includes Ziggy's opinion regarding the topic of the day. Besides, there is also a three-minute interview profiling the guest performers. The show made history with this show within the show, becoming the first time in soapie history, where an actor talking straight into camera and communicating with the viewers out there. Apart from Backstage, he also appeared in many television soapies and serials such as; Malan en Kie, Vallei van Sluiers I and II, Get Out Alive and Taryn & Sharon. In 2018, he joined with the cast of SABC2 soapie 7de Laan with the role "Dylan".
