• 1985
  History, University of Amsterdam
• 1991
  Course in International Relations, Netherlands Institute of International Relations ‘Clingendael’, The Hague
• 1991
  École Nationale d’Administration, Paris

• 1992
  Various positions at the Ministry of Economic Affairs
• 2001
  Director of the European Integration and Strategy Department at the Ministry of Economic Affairs
• 2005
  Deputy Director-General for Economic Policy at the Ministry of Economic Affairs
• 2007
  Deputy Secretary-General at the Ministry of General Affairs
• 2011
  Secretary-General at the Ministry of General Affairs
• 2014
  Deputy mayor of Amsterdam and member of the municipal executive for D66 with responsibility for economic affairs, Schiphol airport, the Port of Amsterdam, historic buildings and monuments, culture and the arts, local media, municipal shareholdings and the city centre
• 26 October 2017 – 10 January 2022
  Minister of the Interior and Kingdom Relations in the third Rutte government
• 10 January 2022
  Appointed Minister of Defence in the fourth Rutte government

Positions previously held by Kajsa Ollongren include:

• member of the advisory board of the international bachelor programme in Philosophy, Politics and Economics at VU Amsterdam
• member of the advisory board of the Confederation of Netherlands Industry and Employers (VNO-NCW)
• member of the advisory board of the Marker Wadden nature restoration project carried out by the Dutch Society for Nature Conservation and Rijkswaterstaat
• board member of the Els Borst Network which supports and empowers women