Jesman is a Senior Lecturer at University of Malawi. He is a demographer and social statistician with over 15 years of experience in quantitative and qualitative social research. He obtained his PhD at University of Southampton in 2015. His doctoral research examined the mismatch between total fertility and modern contraceptive use in Malawi. His research has focused on ageing, reproductive health, adolescent, HIV/AIDS, maternal, infant and child mortality and family planning. He is a member of the International Union of for the Scientific Study of Population (IUSSP) and the Union of African Population Studies (UAPS).