This position is located within the Operational Planning Service (OPS) under the Division for Special Activities (DSA) of the Department of Operational Support (DOS) and will be based in New York. DOS was established to provide operational advisory services to operating entities across the Secretariat, including other departments, offices-away-from headquarters, field missions, and regional commissions. DSA oversees a range of specialized or cross-cutting operational capacities. A large part of its responsibilities is to support start-up, surge, transition and liquidation requirements and to exercise authority on behalf of entities to which authority has not been granted owing to a lack of capacity or from which authority has been temporarily withdrawn. The focus of this job is to lead DOS response in operational support during startup, surge, transition and liquidation. The Senior Administrative Officer will report to the Chief of Service.