Dr. Gary Theseira is a director and council member at Climate Governance Malaysia (CGM), an Adjunct Associate Professor at the Asia School of Business (ASB), serves on the board of the Centre for Environment, Technology and Development Malaysia (CETDEM), and is advisor to the Malaysian Green Technology and Climate Change Corporation (MGTC).

Following his tenure at the Forest Research Institute of Malaysia (FRIM), where he conducted forest carbon quantification, supported the National Clean Development Mechanism (CDM) program, and led the development of the biodiversity clearing house mechanism, he was seconded to the Ministry of Natural Resources and Environment (NRE) as Deputy Undersecretary for Climate Change and negotiated for Malaysia at fourteen UN Climate Conferences (COPs). In 2012, the G-77 and China appointed him to coordinate negotiations leading to the 2015 Paris Agreement, and in 2018, he was appointed by the Minister of Energy, Science, Technology, Environment and Climate Change, YB Yeo Bee Yin, as Special Functions Officer on Environment and Climate Change.

He currently assists the Joint Committee on Climate Change (JC3) on the development of the National Climate Data Catalogue and serves on the Selangor State Action Council on Climate Change (IKLIM) as a subject matter expert.

Dr Theseira has B.Sc. and M.Sc. degrees in Agriculture from Southern Illinois University, received his Ph.D. in Agronomy from Mississippi State University, and conducted Post Doctoral Research at the University of Minnesota.