Grzegorz completed biology study at the Jagiellonian University in Cracow, Poland. He started his scientific training in 2002, in Prof. Erwin F. Wagner’s laboratory at the Institute of Molecular Pathology (IMP), Vienna, Austria. In 2003 he moved to the University Hospital of Zürich, Switzerland to the laboratory of Prof. Thomas F. Lüscher. At the end of 2004 he started his PhD in Prof. Romeo Ricci group at the ETH Zürich. After completion of his PhD study he moved to the laboratory of Prof. Gerard Karsenty at the Columbia University, New York, USA. Currently, he is leading his own research group at the Rudolf Virchow Zentrum (RVZ) at the University of Würzburg in Germany sponsored by the Emmy Noether Programme from the German Research Foundation and the ERC starting grant. His research focuses on identification of signaling cascades promoting metabolic diseases such as obesity, diabetes and atherosclerosis. He is an author of number of high impact research publications in such journals as Science, Cell, Cell Metabolism, Cell Stem Cell and Journal of Experimental Medicine.