Sergiy Gerasymchuck is involved in political studies since 2001 and has the experience of working for the Secretariat of the Parliament of Ukraine, scientific research institutions under the President of Ukraine and under Security and Defense Council of Ukraine. Besides, he was involved in projects implemented by national and international think tanks in Ukraine and in the area of Eastern Partnership. Among these organizations and structures, Sergiy used to cooperate as an expert, analyst and project manager with the National Democratic Institute, Friedrich Ebert Foundation, NATO Center for Information and Documentation, NATO Liaison Office in Ukraine, Black Sea Trust for Regional Cooperation, Volkswagen Foundation, International Renaissance Foundation. As an expert, Sergiy cooperated with Peace Research Institute Frankfurt (HSFK), International Center for Defense and Security (Tallinn, Estonia), International Center for Democratic Transformation in Budapest (Hungary), International Research Company GfK Ukraine and also conducted the research at Uppsala University (Sweden) and Lublin University (Poland). Sergiy is also Board member at Strategic and Security Studies Group.