Matthias has extensive expertise in banking law, insolvency law, property law and private international law, consistently working at the forefront of developments in these areas. He is a member of the committees preparing the UNIDROIT instruments on Bank Insolvency and on Digital Assets, and was a member of the European Commission’s Expert Group on Securities and Claims. He regularly lectures and publishes on developments in European law, Supreme Court litigation and the legal consequences of digitalisation.

Matthias has been professor of Private Law at Leiden University since 2012, specialising in Financial Law. As of January 2023, he is professor of Civil Law. Matthias worked as a lawyer at De Brauw from 2007 until 2012.

Matthias is a renowned member of several international associations, including the International Insolvency Institute, the European Law Institute, and the European Banking Institute, of which he is Secretary of the Academic Board.