2013-Present A dean of Physics Department of Irkutsk State University ( ISU), Irkutsk, Russia (web site: www.isu.ru) 2013 Present A head of Astroparticle Physics and Gamma-Ray Laboratory of Applied Physics Institute of Irkutsk State University, Irkutsk, Russia 2008-2019 A head of Applied Physics Institute of Irkutsk State University (API ISU), Irkutsk, Russia 1980 -2013 A head of Lepton Physics Laboratory of Applied Physics Institute of Irkutsk State University, Irkutsk, Russia 2003-2013 A professor of Radio-electronic Chair of Physics Department of Irkutsk State University, Irkutsk, Russia. 1977 – 1980 An assistant professor of Theoretical Physics Chair of Physics Department of Irkutsk State University, Irkutsk, Russia. 2003-Present Leader of the TAIGA cosmic ray and gamma – ray experiment group, about 37 physicists in Applied Physics Institute of Irkutsk State University (API ISU), Irkutsk, Russia 1980 -Present Leader of the Baikal Neutrino experiment group, about 15 physicists in Applied Physics Institute of Irkutsk State University (API ISU), Irkutsk, Russia