Johannes Leon Kirnberger is a policy consultant for AI and sustainability at the OECD. He previously led the program on climate action and biodiversity preservation at the Global Partnership on AI (GPAI) and the International Centre of Expertise in Montreal on AI (CEIMIA). Johannes is a member of the UNEP Expert Group on Digital Tech for Circular Economy, where he co-develops a digital transformation roadmap for catalyzing digital technologies to accelerate a circular economy. He holds a Bachelor’s degree in Management from ESCP Business School, a Master’s degree on International Public Management from Sciences Po, and a Master’s degree in International Affairs, Energy and Environment from Columbia University. Johannes is a committee member on metrics and indicators at the IEEE SA Planet Positive 2030 initiative, where he co-authored a sustainability roadmap and impact assessment framework for the sustainable design of technology. He co-chairs the working group on AI and sustainability at the Foundation of German Business (SdW), advises German SMEs on sustainability strategy, and is a member of the working group on climate and sustainability at the German AI Association. As a guest lecturer at the Technical University of Munich (TUM), he teaches students on climate change and AI policy.