Mehta's career began with the Indian Administrative Service (IAS) of the Government of India in 1978. He resigned that position in 1980 and joined Philips Petroleum in London as their Senior Economist. He was with Philips Petroleum for 4 years in London and at their headquarters in Bartlesville, Oklahoma, USA. In 1984 he returned to India to join the Public Sector Oil Company “Oil India Limited” as its advisor (Strategic Planning). He resigned from Oil India in 1988 and joined Shell International in London. In 1991, he was posted to Egypt as the managing director for Shell Markets and Chemicals, Egypt. In 1994, he returned to India as the chairman of the Shell Group in India.
Mehta is a member of the National Council of the Confederation of Indian Industry (CII) and Chairman of its hydrocarbons committee. He was the chairman of the Board of Trustees of the Youth Award for India (earlier the Duke of Edinburgh’s Award program). He serves on the boards of Colgate Palmolive India Limited, Mahindra & Mahindra, and Vodaphone India Ltd, as well as Larsen & Toubro. Mehta is also on the Board of Governors of the Pandit Deendayal Petroleum University in Gujarat, India and a member of the Board of Overseers of the Fletcher School of Law & Diplomacy, Tufts University. Since May 2012, he has been a member of the Board of Trustees of Mahindra & Mahindra. He writes a column for the Indian Express and regularly appears on news shows in India.
Mehta has a BA (Hons) degree in Mathematics from St. Stephens College, Delhi University, an MA in Economics from Magdalen College, Oxford University and an MA from the Fletcher School of Law and Diplomacy, Tufts University. He is married with two daughters.