Tomas is the Head of studies at the International Centre for Defence and Security (ICDS); a visiting professor at the European Interdisciplinary Studies Department/College of Europe (Natolin campus); Associate Fellow at the Latvian Institute of International Affairs.

He holds a BA in political science from the University of Vilnius, an MA in war studies from King’s College London and an MBA degree from the University of Liverpool. Previously worked as deputy director of the Baltic Defence College’s Institute of Defence Studies in 2001-2004, and later as dean of the college in 2005-2008. In the latter capacity, he was also the editor of the journal ‘Baltic Security and Defence Review’. In 1998-2001 and in 2005, Tomas worked at the Defence Policy and Planning Department of the Lithuanian Ministry of National Defence.