Soumaila is currently completing his PhD in Demography at the French institute for demographic studies (INED, France) where he is hosted, and at the University of Paris 1 Panthéon-Sorbonne where he is enrolled. He is interested in African demography in general. More specifically, He focuses on mortality studies, especially the mortality of older adults, which has received very little attention in the field. In this regard, His PhD is dedicated to estimating the levels and trends of mortality of this population segment in sub-Saharan Africa by crossing various data sources. His future research agenda include improving data quality and estimates at older ages as well as on causes of death in sub-Saharan Africa and other areas of the world where data are deficient. Before starting his PhD, Soumaila completed a master's degree in applied mathematics and social sciences at Aix-Marseille University and an European postgraduate research certificate in demography as an advanced joint pre-doctoral training program from the European Doctoral School of Demography.