Tomasz Dietl is a Head and a Professor at the International Centre for Interfacing Magnetism and Superconductivity with Topological Matter – MagTop, funded by a grant from the Foundation for Polish Science since 2017 and carried out at the Institute of Physics, Polish Academy of Sciences in Warsaw. He completed his PhD and habilitation degrees in experimental and theoretical condensed matter physics in 1977 and 1983, respectively, and obtained professor title in 1990 at the Institute of Physics, Polish Academy of Sciences. Since 1986, he has been there a team leader, and a founder and a head of the Laboratory for Cryogenics and Spintronics in 2004-2017. Dietl was a postdoctoral researcher at École Polytechnique in Paris (1978) and at Munich Technical University (1983/84). Later he was appointed as a visiting professor at Kepler University in Linz, Fourier University in Grenoble, Tohoku University in Sendai, Paris-Sud University in Orsay, and Regensburg University. He was also a part-time ordinary professor at the Institute of Theoretical Physics, University of Warsaw (2004-2016) and a Principal Investigator and Professor at the Advanced Institute for Materials Research, Tohoku University in Sendai (2012-2023). Among other national, European, and Japanese research projects, in 2008 he obtained an Advanced Grant (FunDMS) of the European Research Council (ERC). His current research interests are focused on the development of material systems and device concepts for nanospintronics of topological materials, ferromagnetic and antiferromagnetic semiconductors, and of hybrid metal/semiconductor nanostructures. He is the author or co-author of over 380 research publications and 30 popularizing articles, cited over 24 000 times, and resulting in the h-factor over 58 (WoS). Dietl has presented over 200 invited talks at international meetings, including 9 plenary talks at major physics conferences. According to the methodology elaborated by a team at Stanford University, SciTech Strategies, Inc., and Research Intelligence, Elsevier B. V. [PLOS Biology (2020)], Dietl is the most cited scientist working now in Poland. In 1998 Dietl became a member of the Polish Academy of Sciences; in 2002 he was elected to the International Union of Pure and Applied Physics, Commission on Low Temperature Physics; later hewas nominated Fellow of the Institute of Physics, UK, the American Physical Society, and the Japanese Society of Applied Physics (in 2004, 2015, and 2019, respectively), while in 2009 Dietl was elected to the Polish Academy of Arts and Sciences as well as to the Warsaw Science Society and in 2011 to Academia Europaea. In 2011, he was appointed by the European Commission to the Scientific Council and to the Steering Committee of the ERC for the term 2011-2014. Since 2023, he has been serving as a Council Member of the National Science Centre (NCN). Tomasz Dietl is recipient of Maria Skłodowska-Curie Award in Poland (1997); Alexander von Humboldt Research Award in Germany (2003); Agilent Technologies Europhysics Prize (2005) with David D. Awschalom and Hideo Ohno, for pioneering works that paved the way for the emergence of semiconductor spintronics; Foundation for Polish Science Prize (2006), and the Marian Smoluchowski Medal of the Polish Physical Society (2010).