Christian appeared in the role of Will Griggs in the Network Ten soap opera Neighbours from 2006 to 2007 and played Penn Graham in Home and Away in 2010.

After studying with various acting schools in Sydney and New York, Clark joined the cast of Neighbours in 2006, playing Will Griggs.

Clark also produces and writes between acting roles, co-producing the comedy feature Squid, while starring alongside Josh Lawson and Ed Kavalee.

Clark has appeared in television shows False Witness, Rescue: Special Ops, Mr & Mrs Murder and various short films and pilots.

In 2010, Clark joined Home and Away as the mysterious Penn Graham, a man who terrorised established character Alf Stewart (Ray Meagher).