In 2010, Ruggeri was appointed to an assistant professorship in international relations at the University of Amsterdam,[5] there he carried out research thanks also to the support of the Independent Social Research Foundation.[6] He spent four years there, then he was elected a fellow in politics at Brasenose College, Oxford, in 2014; he was simultaneously appointed associate professor of quantitative methods in international relations at the University of Oxford's Department of Politics and International Relations.[1][2]
In 2019, Ruggeri was awarded the title of Professor of Political Science and International Relations.[7] In 2019, Ruggeri was named as a co-investigator on an £895,000 research grant from the ESRC to explore "the consequences of United Nations peacekeeping withdrawal".[8] He has created a Hub of Conflict, Peace and Security at the University of Oxford aiming "to serve as a platform for the international community of researchers and practitioners, enabling them to connect, learn from each other, and to collaborate in preventing or mitigating conflict, and shaping a more secure future[9]".