Sabrina is a doctoral candidate at Humboldt University Berlin and a fellow of the research group ‘Dynamic Integration – Law in-between Harmonisation and Plurality in Europe’. Previously, she worked as a research and teaching fellow at the Chair for Public, European and International Law of Prof Dr Georg Nolte (Humboldt University Berlin) and from 2017 to 2019 as a desk officer in the international treaty section of the German Federal Foreign Office. She has recently co-authored a book chapter with Jed Odermatt (City University London) on the relevance of the ‘EU Party’ in mixed agreements (in The EU and its Member States’ Joint Participation in International Agreements, Hart Publishing, forthcoming January 2022).