Sergei Kostjuk received his Ph.D. degree in polymer chemistry in 2002 from Belarusian State University. In 2002, he joined the Research Institute for Physical Chemical Problems, and since 2008, he has headed the laboratory of catalysis of polymerization processes at the same institute. He was promoted to Associate Professor in 2012 and Professor in 2021 at Belarusian State University. In cooperation with BASF SE, he has developed several generations of catalysts for the synthesis of highly reactive polyisobutylene. His research interests encompass the areas of polymer synthesis, catalysis, green and sustainable chemistry, and, recently, stimuli-responsive polymers.