Kaidanow was a career member of the
United States Foreign Service. She had assignments in
Belgrade (1995–1997),
Skopje (1998–1999),
Sarajevo (1997–1998 and 2003–2006),
Pristina (2006–2009), and
Kabul (2012–2013), as well as the
United States National Security Council and the
Bureau of European and Eurasian Affairs (2009–2011). At the National Security Council, Kaidanow worked as Director for Southeast European Affairs. From August 2009 to June 2011, Kaidanow served as a Deputy
Assistant Secretary of State for European and Eurasian Affairs, and then served as the bureau's Principal Deputy Assistant Secretary until 2012. From September 2012 to October 2013, Kaidanow served as the
DCM at the
U.S. embassy in Kabul, Afghanistan. Kaidanow served as the
Coordinator for Counterterrorism from February 2014 to February 2016. In February 2016, Kaidanow moved to the
Bureau of Political-Military Affairs as the Principal Deputy Assistant Secretary. On September 25, 2018, Kaidanow was appointed a senior advisor for international cooperation in the Office of the
Under Secretary of Defense for Acquisition and Sustainment. She resigned on December 16, 2019. ==Death==