Deni Mazrekaj is an Assistant Professor of Sociology at Utrecht University and an affiliated researcher at the University of Oxford and KU Leuven. He completed his Ph.D. in economics in 2019 at KU Leuven after which he was a postdoctoral researcher in sociology and social demography at the University of Oxford. Deni is an Associate Editor of PLoS One and Humanities & Social Sciences Communications, and on the Editorial Board of Sociology: the flagship journal of the British Sociological Association.

Deni's research is situated at the intersection of sociology of education and the sociology of the family. He is particularly interested in the role of school and family environment in the development of children’s outcomes. Deni has received several awards from the American Sociological Association and the European Academy of Sociology for his research about children with same-sex parents. His other research, featured in leading journals such as the American Sociological Review, Demography, and Perspectives on Psychological Science, includes household division of labor, divorce, fertility, and school closures. Additionally, Deni has contributed to discussions on workplace inclusion in outlets such as Contexts and Nature.