Sebastian Polak holds a tenured position at the Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland (Professor in Biopharmacy). He is also a Senior Scientific Advisor at Certara UK, part of an international Certara company. He led the development of the cardiac safety modelling and simulation system based on biophysically detailed models of human cardiac myocytes operating at the population level (CSS: Cardiac Safety Simulator). He joined Simcyp (now Certara UK) in 2007, where he is a member of the Modelling & Simulation group involved in the further development and improvement of the absorption and bioavailability model of the Simcyp Population-Based Simulator. Among others, he leads dermal absorption module development. He earned an MSc in pharmacy from the Faculty of Pharmacy at Jagiellonian University, where he also received his PhD and DSc (Biopharmacy).