Sima started her career at American Express Bank and went on to work at ANZ Grindlays and Standard Chartered. Her last assignment was at Habib Bank Limited where she worked for 16 years, first as Head of Corporate & Investment Banking and then as Head of Branch Banking. Her 30 plus years of overall experience in Banking has included assignments in Risk Management, Retail, Corporate and Investment Banking.

She has a degree in business from Kingston University, UK and an MBA from City University, London.