Fabian Brand grew up in Luxembourg, where he completed his secondary education with the Baccalauréat européen at the European School of Luxembourg. He went on to study Law and Philosophy at the Universities of Tübingen and Freiburg, as well as at the University of Istanbul.

After passing the First State Examination in Law (Erstes Staatsexamen, J.D./ Master’s degree equivalent) in 2017, he worked as a research assistant at the Institute for Legal History and Comparative Legal History, Dep. of German Legal History under Professor Dr. Frank L. Schäfer, LL.M. (Cambridge). He then completed his legal traineeship (Referendariat) at the Higher Regional Court of Karlsruhe in 2019, with placements including the Department for Sexual Offences at the Public Prosecutor’s Office in Freiburg, the Fraud Prevention and Analysis Unit of the European Anti-Fraud Office (OLAF) in Brussels, and the German Embassy in Belgrade, where he was involved in matters of military and international criminal law.

Following the Second State Examination and admission to the German Bar, Fabian served as a research assistant at the Chair of Professor Dr. Andreas Eicker from January 2020 to May 2025. From August 2021 to April 2022, he also worked as a legal officer for German-speaking legal systems at the Swiss Institute of Comparative Law in Lausanne.

In May 2025, he was awarded his doctorate for the dissertation entitled: «Criminal Law, Culpability, and Mistake of Law. On the Mistake of Law in German and Swiss Criminal Law from the perspectives of legal doctrine, legal philosophy, and state theory. A contribution to the foundations and limits of a moralist approach to criminal law».

Since June 2025, Fabian has been working as a Senior Research Associate and postdoctoral fellow (Habilitand) at the Chair of Professor Dr. Andreas Eicker. His research focuses on the intersection of criminal law, constitutional theory, legal philosophy, and comparative law.