1. Vice President of the Scientific Institute of Public Law (Kyiv, Ukraine).
2. Lecturer of Criminal Law Department, National Academy of Internal Affairs (Kyiv, Ukraine).
3. Inspector of the Department of educational and methodical workat Kharkiv National University of Internal Affairs (Sumy, Ukraine).
4. Researcher of the Scientific Institute of Public Law (Kyiv, Ukraine).
5. Chief of the Investigation Department of the Main Directorate of the National Police in Mykolaiv region (Mykolaiv, Ukraine).