Prof. Dr. Piet van der Graaf is a Professor of Systems Pharmacology and Chair of Pharmacology at Leiden University.

He is also Vice President and Head of Quantitative Systems Pharmacology at Certara and Editor-in-Chief of Pharmacometrics & Systems Pharmacology.

He has 15 years of experience of working in the pharmaceutical industry at Synthélabo (Sanofi) and Pfizer, where he held leadership positions in Discovery Biology, Pharmacokinetics & Drug Metabolism (PDM) and Clinical Pharmacology/Pharmacometrics.