Kazuhisa Koakutsu has worked for over 20 years for international climate change market-based solutions including the Clean Development Mechanism (CDM) under the Kyoto Protocol, the Joint Crediting Mechanism (JCM), and Article 6.4 Mechanism under the Paris Agreement and the United Nations Framework Convention on Climate Change (UNFCCC) through the implementation of capacity building activities, development of the relevant database, research and policy development. 
 

He previously worked as the Director for the International Negotiations in the Ministry of Environment Japan and served as a lead negotiator for Article 6 of the Paris Agreement in the UNFCCC negotiation process from 2016 to 2023.  He also served as a member of Article 6.4 Mechanism (Paris Agreement Crediting Mechanism) Supervisory Board from 2022 to 2023.