Leen is an experienced director and supervisor, starting his career at the Royal Military Academy in Breda. During his military career, he became a certified public accountant and then briefly practised that profession at KPMG. Too many numbers and few people made him look for a change in his career.
Leen successively held roles at KLM, PwC and Nyenrode. Leading professionals formed the leitmotiv of his work. After nearly 10 years of management at Nyenrode, he is now active three days a week as Professor of Corporate Governance and Academic Director of the Board & Governance programs there, including the highly successful supervisory board program. Leen is also active as a supervisor at various organizations such as Univé, SNS Reaal Pensioenfonds and Stichting BOOR.
In short, Leen is tried and tested in theoretical and practical management and supervision. He is a frequent speaker and has also supervised many supervisory boards self-assessments.