Nithi is President of Environmental Protection Society, Malaysia and Director and Regional Coordinator of Climate Action Network, Southeast Asia. He is Past President of Chevening Alumni Malaysia, an association of leaders awarded the Chevening Scholarship by the UK Government. He is an International Advisory Board member of the Archbishop Desmond Tutu Centre for War and Peace Studies at Liverpool Hope University. An accredited public relations practitioner, Nithi has Masters’ degrees from the University of South Australia. A vegetarian since 1969 at the age of nine, Nithi became a vegan in 2021.