Joubert started his career at the Boland Cavaliers where he played from 1999 to 2001 when he joined Western Province from 2002 to 2006.

He made his debut for South Africa against New Zealand in 2001 and in that very game, picked up a serious knee injury.

Despite several injury setbacks (one of which, a badly damaged shoulder, kept him out of the 2003 World Cup), Joubert continued to develop into a world-class centre.

He then sustained a back injury that kept him out of the Currie Cup and the Springboks' year-end tour to Argentina, Wales and France.

Joubert won the 2007 Currie Cup with the Free State Cheetahs and the 2010 French Championship with ASM Clermont Auvergne.