Matthias has extensive litigation experience: admitted to the Dutch bar in 2007, he has also served as a deputy judge since 2016. He focuses on 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 digital assets, and previously 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 a professor of law at Leiden Law School since 2012, where he currently holds the chair for Civil Law. Matthias worked as a lawyer at De Brauw from 2007 until 2012. On 1 January 2023, he rejoined the firm as of counsel.

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