Jan de Bie Leuveling Tjeenk specialises in corporate litigation, financial services litigation and mass claims. Jan is admitted to the Supreme Court Bar. He regularly acts for corporates and financial institutions, particularly in mass litigation. Recent work includes: representing Shell in a dispute relating to oil spills in Nigeria; advising and representing NAM in mass claims surrounding earthquakes; and advising and representing financial institutions in mass claims relating to interest rate swaps sold to small and medium-sized enterprises.

Jan is a professor of corporate litigation at VU University Amsterdam.