Brigadier Pieterse joined the South African Police Service on 1 December 1979 and have been assigned to the Division: Detective Service from 1983, where he performed his duties within a number of specialised environments, inclusive of the Stock Theft- ; Murder and Robbery- and Crime Intelligence Units. During 1987 he received his Commission rank, and has since served in a number of managerial positions within the South African Police Service. During 1992 to 2001 Brig Pieterse furthered his career within the Commercial Crime establishment, having being assigned to a number of commander positions, also “seconded” to the Department of Justice’s Investigative Directorate: Serious Economic Offences (IDSEO). For the period 2001 to 2009 he served as a member of the Directorate for Special Operations (DSO Scorpions), where he held the position of Chief Investigating Officer (CIO). From 2009 to date Brig Pieterse again became part of Commercial Crime within the South African Police Service, where he is currently performing his duties as the National Section Head: Electronic Crime Unit. Brig Pieterse has extensive exposure to the investigation of cybercrime, specifically in as far as it relates to the broader financial/banking platform.