Hassan worked as an executive with
CIMB corporate finance department from 1997 to 2000. In 2001, he started Zarnet, a technology firm. In July 2003, Hassan joined Cradle as head of structuring, while it was called Cradle Investment Programme (CIP). He was later appointed as CIP's strategy and policy advisor in 2004. He left the programme in 2005, returning in October 2007 (now called Cradle Fund) as its chief executive officer. Hassan was instrumental in enacting the Angel Tax Incentive in Malaysia during his tenure with Cradle. He helped to establish the Malaysian Business Angel Network (MBAN) where he served as secretariat chairman. He was a member of Technopreneurs Association of Malaysia (TeAM). He was a board member of the
Malaysian Global Innovation & Creativity Centre (MaGIC) from its inception in April 2014 to February 2015. Hassan was a board member of Cradle’s venture capital arm, Cradle Seed Ventures (CSV) until death. == Death ==