Leo Hoffmann-Axthelm founded the German office of ICAN in 2013, and has been the Brussels-representative for the global ICAN campaign vis-à-vis since 2015, working in particular with the EU institutions, but also on NATO issues with regard to nuclear weapons. He participated in negotiations leading to the Treaty on the Prohibition of Nuclear Weapons, and was a member of ICAN's delegation to the 2017 Nobel Peace Prize ceremony in Oslo. Since 2016, he also coordinates the research and advocacy for Transparency International's EU Office in Brussels.
In 2014-15, he worked at the European Commission, first in the Director-General's team at DG Economic and Financial Affairs (ECFIN), then as interinstitutional officer in its Joint Research Centre. Before joining ICAN, Leo had a short stint as Disarmament Adviser for the Permanent Mission of the Republic of Nauru to the UN in New York, when Naura chaired the Alliance of Small Island States in 2012. He studied international relations, international law, economics, EU integration and anthropology in Berlin, Dresden, Buenos Aires and Bruges.