1993-1996 Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine (IGIC NASU) (Post graduate student) 1996-1998 Engineer, Dept. of Molten Salts, IGIC NASU 1999-2000 Junior Scientific Researcher, Molten Salts Department IGIC NASU, Kyiv, Ukraine 2000-2005 Scientific Researcher, Department of Physico-Inorganic Chemistry IGIC NASU, Kyiv, Ukraine 2005-2013 Senior Scientific Researcher, Department of Physico-Inorganic Chemistry IGIC NASU, Kyiv, Ukraine 2013-2017 Leading Scientific Researcher, Department of Physico-Inorganic Chemistry IGIC NASU, Kyiv, Ukraine 2017-present Leading Scientific Researcher, Department of Chemistry of Complex Compounds IGIC NASU, Kyiv, Ukraine