In-between postgraduate degree courses (1974–1975) Tingsabadh worked as an economist in the Regional Planning Division of the National Economic and Social Development Board in Thailand.[3] In 1975 he began lecturing in the Faculty of Economics, and he continues to lecture at Chulalongkorn University.[3]
Tingasabadh served as assistant director of the Social Research Institute at Chulalongkorn from 1981 to 1984.[3] In 1986 he was appointed assistant professor in the Faculty of Economics.[3] From 1987 to 1991 he was the deputy director of the Social Research Institute and from 1991 to 1995 he was deputy director of the Environmental Research Institute.[3]
In 1996 he was appointed director of the Centre for Ecological Economics in the Faculty of Economics at Chulalongkorn.[3] He also became a member of the Research Subcommittee on Forestry and Multipurpose Trees with the National Research Council.[3]
Since 2000 he has served as director of the Centre for European Studies at Chulalongkorn.[3] He is an advisor to the editor of the Journal of European Studies, published by the Centre for European Studies.[4]
Tingsabadh is a member of the advisory committee to the ASEAN Energy Market Integration (AEMI) Initiative.[5]