Piet started out as a lecturer at the University of Pretoria, and subsequently joined the South African Reserve Bank as an economic analyst. He joined Allan Gray Investment Counsel in 1991 as a portfolio manager and later moved to Investec Asset Management in 1995. Piet founded RECM, a financial services business, in 2003. He is currently a director of JSE listed RECM & CALIBRE, and a director of Astoria, a Mauritian domiciled investment holding company. Piet also serves on the boards of other private companies.