Mallory is an emeritus professor at Queen's University, Belfast, a member of the Royal Irish Academy and the editor of the Journal of Indo-European Studies and Emania: Bulletin of the Navan Research Group (Belfast).
Mallory é profesor emérito da Queen's University of Belfast, é membro da Real Academia Irlandesa e editor da Journal of Indo-European Studies (‘Revista de estudos indoeuropeos’) e de Emania: Bulletin of the Navan Research Group (‘Boletín do grupo de investigación en Navan’), en Belfast.