He was a lecturer at University of Oxford from 1970–1977 and served as a Professor of Economics at the University of Warwick from 1978 to 1987. He taught from 1986 to 1993 at the London School of Economics, becoming the Sir John Hicks Professor of Economics. From 1994 until 1999 he was the Chief Economist and Special Counsellor to the President of the European Bank for Reconstruction and Development. His research focused on economic development and growth, and he also wrote books on Kenya and the Green Revolution in India. Since 1999, he has been a member of the International Advisory Council of the Center for Social and Economic Research (CASE). From 1999 until 2000 Stern was Chairman of the consultancy London Economics founded by John Kay.