Gerhard holds two law degrees from the University of South Africa and is a Certified Business Intelligence expert by SAP Germany. He started his career in the South African Police Force's Fraud Unit and was quickly promoted to Captain, wherafter he was seconded to the Department of Justice's Office for Serious Economic Offences. During his tenure at the Office for Serious Economic Offences he was admitted as an advocate to the High Court of South Africa. He was thereafter appointed as Senior Special Investigator at the National Prosecuting Authority's Directorate of Special Operations (Scorpions), the equivalent of the FBI in the USA. Thereafter he was appointed as the Regional Team Lead at the National Prosecuting Authority's Asset Forfeiture Unit.

After his tenure he joined an International Consultancy group, as a business intelligence and analytics expert, servicing multinational clients in South Africa and the United States. On returning to South Africa, he started to practice law as an advocate, with a focus on commercial law and litigation, risk and compliance, and consulted as a specialist in financial forensic investigations.