Doctoral degree in law was awarded by the Univerisity of Warsaw in 2002, Habilitation by University of Białystok in 2013 for a cycle of articles devoted to the legal awareness in Antiquity and late antique legal practice. Has directed and participated in a number of research projects (awarded by the Polish and Spanish Research entities). Since 2002 co-editor of The Journal of Juristic Papyrology. His main research interests are juristic papyrology combined with elements of social history and history of mentality, ancient family law (and in this context the legal standing of women), and the legal œuvre of Dioskoros of Aphrodité.