Etienne grew up in the Free State and the Eastern Cape. After matriculated in Grahamstown, he obtained both his B. Iuris and LLB degrees from the University of the Free State in 1987 and 1990 respectively. He completed his articles of clerkship with Symington & de Kok in Bloemfontein and was admitted as an Attorney, Notary, and Conveyancer in 1992. He remained with Symington & de Kok throughout and served as a director of the firm until August 2020.