His father, Norbert Yangongo (1908–1982), was a policeman, while his mother, Agathe Sawala Mounguiakoua, worked as a seamstress.

He served as the director of École spéciale de formation des officiers d’active (ESFOA) in Bouar and Government Commissioner at the Permanent Military Court on 10 October 1975.

During Patasse's presidency, Yangongo's rank was elevated to major general and he was designated as inspector of FACA.

[2] Under Patasse's administration, Yangongo was appointed the Minister of Disarmament from 30 April 2001 to 15 January 2003.

[1] In 2007, Bozize designated Yangongo as the chairman of the high commissioner of National Pioneer Youth.

[1] He then served as the Minister of Disarmament, Demobilization, Reintegration of Veterans and National Pioneer Youth on 22 April 2011.

Under his tenure, Yangongo negotiated and signed a ceasefire agreement with CPJP in 2012 and resumed the DDR operation.