Igor Kuželka was appointed Acting Assistant Foreign Minister for Security Policy in 2023.  He holds a Degree in Economics and he joined the Ministry of Foreign Affairs in March 2000 as an intern. 

Having completed training at the Diplomatic Academy, in May 2001, he was granted the rank of Attaché, working in the Department for Multilateral Economic Cooperation in the Multilateral Affairs Sector. From November 2001 to March 2006, he served as Third and Second Secretary at the Embassy of the Federal Republic of Yugoslavia (State Union of Serbia and Montenegro) in Brussels. From March to September 2006, he served as First Secretary in the Europe Department and then until September 2008 as a Coordinator of Affairs in the Bilateral Cooperation Sector with the rank of Counsellor. 

Until September 2012, he served as First Counsellor in the Mission of the Republic of Serbia to the European Union in Brussels. After returning to the country, since September 2012, he served as an Affairs Coordinator in the Office of the State Secretary of the Ministry of Foreign Affairs, with the rank of Minister-Counsellor, obtained in 2013. 

In the Security Policy Sector, since May 2015, he served as Head of Department for Common Security and Defence Policy, Security Challenges, and for a certain period, for Arms Control as well.