March 2023 - Present
January 2020 - November 2021
August 2018 - May 2019
August 2016 - July 2018
February 2016 - July 2016
April 2013 - December 2015
March 2012 - March 2013
January 2010 - December 2012
KPI NTUU, Ukraine
1998 - 2004