Sean functions as the CEO of Ad Dynamo. He began his working career in 1996 at Credit Suisse in London, where he worked in derivatives for a period of 3 years. During this time, Sean began developing tactical applications for the bank. Upon returning to South Africa, Sean developed South Africa's first online share trading software which he licensed to E*Trade. In 2000 Sean co-founded Entelligence with prominent SA banker, GT Ferreira.