This position is located in the Headquarters Client Support Service (HQCSS), Division of Administration, New York, Department of Operational Support (DOS). The Administrative Assistant reports to the Human Resources Officer, DOS. The HQCSS also provides administrative support to the Global Compact Office (GCO), Human Security Unit (HSU), Office of Administration of Justice (OAJ), Office of the Secretary-General's Envoy on Technology, United Nations Sustainable Development Group (UNSDG) System-Wide Evaluation Office, Office of Special Coordinator on Improving the United Nations Response to Sexual Exploitation and Abuse, Office of the Special Representative of the Secretary-General on Children and Armed Conflict (OSRSG-CAAC), Office of the Special Representative of the Secretary-General on Sexual Violence in Conflict (OSRSG-SVC), Office of the Special Representative of the Secretary-General on Violence Against Children (OSRSG-VAC), Office of the United Nations Ombudsman and Mediation Services, Office of Victims' Rights Advocate (OVRA), United Nations Ethics Office, United Nations Office for Partnerships (UNOP), United Nations Alliance of Civilizations (UNAOC), the Trust Fund in Support of the Multinational Security Support (MSS) Mission in Haiti; Office of the Data Protection and Privacy, Liaison offices of the: United Nations Office on Drugs and Crime, United Nations Convention to Combat Desertification in New York, United Nations Institute for Training and Research. In line with the Secretary-General's management reform report effective 01 January 2019 DOS will focus on operations, services, transactions and surge support to entities in weak environments. It will service and support the entire Secretariat - at Headquarters, the regional commissions and offices away from Headquarters and in the field.