Olegas Černašėjus Vilnius Technical University, Engineer's diploma of mechanical engineering, 1994 Vilnius Technical University, Master's degree of mechanical science, 1996 Vilnius Gediminas Technical University, PhD diploma, 2000 Vilnius Gediminas Technical University, Assoc. professor, 2007 Vilnius Gediminas Technical University: Doctoral Student of Department of Materials Science, 1996-2000 Assistant of Department of Materials Science and Welding, 2001-2002 Assoc. professor of Department of Materials Science and Welding, 2002-2017 Vice-dean for research and PhD studies of faculty of Mechanics, 2011-2016 The head of Department of Materials Science and Welding, 2016-2017 Assoc. professor of Department of Mechanics and Materials Engineering, 2017-2018 Professor of Department of Mechanics and Materials Engineering, 2018 - to the present The field of scientific research is the search for new welding materials, devices and technologies. Lithuanian Standards Board Member of TC 66 technical cometee ,,Non-destructive testing”, 2010 Central-Asian materials science journal. Karaganda: Karaganda State Technical University, ISSN 2411-2941, member of editorial board, 2015 Member of the VGTU PhD Studies Committee of Materials Engineering (08T), 2018.