Alexander Vladimirovich Melnikov, born in 1960 in Moscow, USSR, studied at Lomonosov Moscow State University, from 1977 and graduated in 1982 with distinguished Master diploma. In 1987 he received his PhD in applied mathematics with his thesis on mathematical aspects of fusion plasma diagnostics - Heavy Ion Beam Probing (HIBP). In 1982 he had already started as a research engineer in Tokamak division, National Research Centre (NRC) 'Kurchatov Institute' in Moscow - Russia's national leading scientific center and birthplace of tokamaks. He worked in the TM-4 tokamak, and later in the T-10 tokamak, focusing on plasma electric potential studies and HIBP development in collaboration with the HIBP group from Ukrainian National Science Centre 'Kharkov Institute of Physics and Technology' (NSC KIPT), led by Dr. Ludmila Krupnik. In 1984 he got a position as junior researcher, in 1988 as researcher, and in 1992 as senior researcher. In 1992 he started a trilateral scientific collaboration between NRC 'Kurchatov Institute', NSC KIPT and "Centro de Investigaciones Energeticas, Medioambientales and Technologicas" (CIEMAT), Madrid, Spain, which successfully remains up to now. In 1993 he established and led the HIBP research group at the NRC 'Kurchatov Institute'. In 1994 he got a position of leading researcher, and in 2016 of deputy head of the Tokamak Division in Fusion Research Centre. In 2012 he received the degree of Dr.Sci. in plasma physics with his thesis "Electric Potential in Toroidal Plasma Devices". In that same year he became a member of the Expert Group on the Energetic particle physics of the International Tokamak Physics Activity in support of ITER. Since 1993 he is an Associate Professor, and since 2014 a Full Professor at the National Nuclear Research University 'Moscow Engineering and Physical Institute' (MEPhI, Moscow), teaching the course 'Technology of thermonuclear experiment' to Master students. Author of more than 300 papers on plasma physics and plasma diagnostics, he published a monograph 'Electric Potential in Toroidal Plasma Devices' in Russian in 2015. In 1983 he received the Kurchatov award for the best scientific work of young scientists, and in 2008, 2011 and 2015 the Kurchatov awards for the best scientific work by NRC "Kurchatov Institute". In 2016 he got Artsimovich award for the outstanding work in experimental physics by Russian Academy of Science.