[1] Born in Mandiana, he studied in Guinea, receiving a master's degree in finance in 1998 from Gamal Abdel Nasser University of Conakry.
Diakaria Koulibaly held several positions in the Guinean administration, notably in the petroleum sector.
From March 2014 to June 2014, he was an advisor at the Ministry of Trade (Guinea) tasked with the petroleum sector, and then Director General of the Office National des Pétroles (ONAP).
From July 2014 to December 2015, he was the National Director of Petroleum Products and Derivatives at the Ministry of Trade and from January 2016 to 29 August 2018[2] General Director of the l’Office National des Pétroles (ONAP).
Diakaria Koulibaly was imprisoned at the Maison Centrale de Conakry on April 6, 2022, after three days of interrogation by the court for the repression of economic and financial crime, who pursued him for alleged illegal gains and laundering of Federal funds.