Kurt Kremer currently is Director emeritus at the Max Planck Institute for Polymer Research, MPIP, in Mainz, Germany. Before that he headed the Polymer Theory Department at the MPIP until June, 2024 for almost 29 years. He obtained his PhD in 1983 under the supervision of Kurt Binder, then Professor in Cologne, at the National Research Center, KFA, in Jülich. Before moving to MPIP, he subsequently worked at KFA Jülich, at Exxon Research and Engineering, Annandale NJ, and Mainz University, interrupted by extensive visits to Bayer Materials Science, Leverkusen, UC Santa Barbara and University of Minnesota. Already at the beginning of his career he developed two most widely used models for computer simulations of generic polymer properties: The Kremer-Grest bead-spring model and the Bond Fluctuation Model. These models have proven to be very well suited to both static and dynamic properties of polymers. They have become standard in polymer physics modeling. Up to today these models and variants are employed in many studies of polymer dynamics, rheology and active systems. Subsequently he extended the work to gels and networks as well as to polyelectrolytes. For the latter he was one of the coordinating scientists of the first German-French Priority Program funded by the German Science Foundation, DFG. Over the years he developed scale bridging simulations which were able to connect chemistry specific and generic scaling properties. This early multiscale work then was extended to functional (bio)polymers and polymer electronics. Currently his work focusses on multiscale modelling of complex macromolecular structures with a focus on adaptive resolution approaches to capture molecular processes and open systems. Kurt Kremer received several honors for his work and is member of the German National Academy Leopoldina and of the Academy of Europe.