Mr Sinha started his career in 1984-85 at a leading private sector bank in India where he worked in various departments (Retail, Corporate, Finance, Treasury, and Trade Finance) before ultimately settling down in IT then he gradually moving up the ladder until he was assigned as head of IT at a newly formed subsidiary of the bank. Later on Gautam joined a software development company (Banking & Finance) where he held several Key management positions before moving to Misys Banking Systems, the leading banking software company where he worked for about 14 years in various positions and oversaw the deployment of Misys banking solutions in many banks around the world including Sharjah Islamic Bank.
In 2008 Mr Sinha joined Sharjah Islamic Bank and in 2010 he was promoted to the CIO position.