Since November 2019, Mareike Sinz has been working at the Chair of International Law and Public Law of Prof. Dr. Anna Petrig, LL.M. (Harvard) at the University of Basel, Faculty of Law. In November 2022, she started her Ph.D. studies as a Cotutelle de thèse at the Basel Faculty of Law under the supervision of Professor Petrig and at the Albert Ludwig University of Freiburg (Germany), Faculty of Law, under the supervision of Prof. Dr. Paulina Starski. Her research focuses on domestic transparency of international legal instruments from a comparative law perspective. In this context, she participates in the doctoral program of the Basel Faculty of Law ‘Recht im Wandel’ [‘Law in Transition’].

From 2013 to 2019, she studied law at the University of Freiburg i.Br. and at the Vilniaus Universitetas in Vilnius (Lithuania). Her main focus during her studies was German, European, and International Public Law. From 2014 to 2015 and from 2017 to 2019, she worked as a student assistant at the Chair of European and International Law of Prof. Dr. Ulrich Haltern, LL.M. (Yale) at the University of Freiburg i.Br.

After passing the First State Examination in Law of the Federal State of Baden-Württemberg in 2019, she did the EUCOR Master's Program in Law offered by the Universities of Basel, Strasbourg (France), and Freiburg i.Br. She completed the program with her master thesis on ‘Internationales Soft Law und Fragen nach parlamentarischer Zustimmung. Eine Betrachtung im Rahmen eines deutsch-französisch-schweizerischen Rechtsvergleichs’ [‘International Soft Law and Questions of Parliamentary Approval. An Approach from a Comparative Law Perspective (Germany, France, Switzerland)’].

During her legal clerkship between 2020 and 2022 at the Regional Court in Freiburg i.Br., she worked at different places, e.g. at the German Embassy in Brussels (Belgium). In 2022, she passed the Second State Examination in Law of the Federal State of Baden-Württemberg.