Director of Legal Department, Ministry of Foreign Affairs of the Russian Federation (1994-1998), Ambassador Extraordinary and Plenipotentiary of the Russian Federation to the Kingdom of the Netherlands, Permanent Representative to the Organization for the Prohibition of Chemical Weapons (1998-2003), Director of the Office of Special Projects, Director of the Secretariat for the Policy-Making Organs, Organization for the Prohibition of Chemical Weapons (2004-2011), Special Adviser on External Relations and Cooperation at the Registry of the International Criminal Court (2011-2015).