Lech A. Grzelak is a Senior Quantitative Researcher at the Modelling and Research department at Rabobank International in the Netherlands. He works mainly with interest rates, fx and inflation. Lech received his Ph.D. in Numerical Analysis at Delft University of Technology (the Netherlands). His main research interests are stochastic and local volatility models and cross asset hybrid models. Lech has published several research articles on quantitative finance in multiple prime journals.