The International Atomic Energy Agency (IAEA) says it aims to appoint a new Director General by October.
The nuclear watchdog said on Thursday that whoever is named as its new leader will take office in January.
Cornel Feruta, a Romanian diplomat, will head the agency until member states agree on a permanent successor to Yukiya Amano, who died at the age of 72.
The closing date for applications is September 5.

At least 14 killed in explosion at weapons depot in Syria
US hits five Iranian oil tankers after attack on Navy ships
UK flights resume after major air traffic outage but airports warn of more disruption
Serbia's President Vucic dissolves parliament, calls snap elections
With large crowds attending, Norway lays King Harald to rest
Jordan intercepts 18 Iranian ballistic missiles
Air traffic control issue disrupts flights at major UK airports
At least 73 injured after Houthi rebels attack Saudi civilian and energy facilities
