He was briefly Prime Minister in an acting capacity for a few days in February 2007.
He also assumed the chief responsibility subdivision of Civil Engineering Infrastructure service, part of the ASECNA.
[1][3] Younousmi became powerful due to an increase in oil revenues and Chad's involvement in major infrastructure projects.
[2] When Prime Minister Pascal Yoadimnadji was flown to France for medical treatment on 21 February 2007, Younousmi became head of the government in his absence.
Younousmi remained Minister of State for Infrastructure in Koumakoye's government, named on 4 March.