Member of the Committee on Mechanics and Civil Engineering of the Polish Academy of Sciences branch Wrocław, President of the Polish Group of Crack Mechanics (PGMP), President of the Wroclaw Branch of PTMTS (Polish Society for Theoretical and Applied Mechanics), Grzegorz Lesiuk, Ph.D., DSc. professor of the WUST (Wroclaw University of Science and Technology), has been employed at the Wrocław University of Technology (Faculty of Mechanical Engineering) since 2009. He received his doctoral degree in technical sciences in 2013, and received his habilitation in 2020 at the Faculty of Mechanical Engineering of Wrocław University of Technology. His scientific activities are in the field of mechanics, fracture mechanics and fatigue of materials and structures, as well as new materials and modeling of their durability under cyclic and static loads. In this field, he has more than 120 scientific papers published in renowned national and international scientific and technical journals, as well as more than 70 conference papers and 1 patent. He is a member of the Polish Society of Theoretical and Applied Mechanics and ESIS (European Structural Integrity Society). As part of his teaching activities, he gives lectures and exercises in courses on mechanics, strength of materials, fracture mechanics for students of Wroclaw University of Technology. He is co-author of an academic mechanics coursebook and co-author of a monograph (Springer) on the problems of degradation of materials and structures. For years, he has cooperated extensively with foreign centers in Europe (mainly Porto, Coimbra-Portugal, Oviedo-Spain, Milan, Cassino, Bologna-Italy, Brno, Prague-Czech Republic, Lviv, Kiev-Ukraine, Chemintz, Kaiserslautern-Germany, Trondheim-Norway, Nove Mesto-Slovenia) and abroad (Brazil-São Paulo, Minas Gerais, China-Chengdu, USA-Michigan, Canada-Waterloo, Zabol-Iran, Boumerdes-Algeria). He is a co-organizer of many scientific events of international as well as national scope, i.e. XXICMFM (International Colloquium Mechanical Fatigue of Metals), XVIII KKMP (National Conference on Fracture Mechanics), 1st VCMF (Virtual Conference on Fatigue of Metals), 9th Symposium - Layered Structures, and the creator of a new initiative under ERASMUS BIP courses for summer and winter schools of fracture mechanics and fatigue of materials. He has been repeatedly awarded for his scientific activities: Admission as a member of the Academy of Young Scientists and Artists operating at the Mayor of the City of Wroclaw - nomination received from the Mayor of the City of Wroclaw (2018), Award of the Rector of Wroclaw University of Technology (2018, 2020), International ESIS Award - TC12 (Merit Award) 2019 and 2 international TOP 1% Reviewers (Publons&Web of Science) awards - 2019, Lierati Award (2019) - Emerald Journals Group, 2023 - ESIS Award of Merit - Robert Moskovic Award (Serbia, IV, 2023), - Faculty of Engineering Porto medal University of Porto - 2023. In addition, in his career he has managed numerous projects of national as well as international scope funded by NCBiR, NCN, NAWA.