Chef de Cabinet

In some Francophone countries and international organisations, a chef de cabinet is a senior official working for a high-ranking political or administrative figure such as a government minister. They are typically responsible for running the office and may serve a similar function to a private secretary or chief of staff.
The title is used by the head of an office in the United Nations Secretariat, appointed by the Secretary-General, or in the European Commission, appointed by an individual European Commissioner for their personal cabinet. The current chef de cabinet to the United Nations Secretary-General is Courtenay Rattray of Jamaica.