Following his Ph.D. in Geography, Jan Marco Müller's career included research management positions at the German Helmholtz Centre for Environmental Research (UFZ), the former JRC Institute for Environment and Sustainability in Ispra (Italy), and the United Kingdom Centre for Ecology & Hydrology. During this time, he also served as founding Secretary of the Partnership for European Environmental Research (PEER). After working as Assistant to the Director-General of the European Commission’s Joint Research Centre (2009-2012), he managed the office of the Chief Scientific Adviser to the President of the European Commission (2012-2015) and then joined DG Research and Innovation to help setting up the Commission's current Scientific Advice Mechanism. From 2017 to 2020, he worked for the International Institute for Applied Systems Analysis (IIASA) near Vienna as Coordinator for Science Diplomacy and Acting Chief Operations Officer. From 2020 to 2022, he served as first-ever Science & Technology Advisor in the European External Action Service (EEAS), before joining the European Commission’s DG Research and Innovation as Coordinator for Science Diplomacy and Multilateral Relations.