He is Senior Lecturer II at the Institute of Islamic Studies and Affiliate Faculty at the Center for International Studies of the University of the Philippines, Diliman. Appointed as Associate Professorial Lecturer V at the College of Political Science and Public Administration of the Polytechnic University of the Philippines. And part-time lecturer at the International Studies department of Far Eastern University, Manila. He completed his PhD in International Relations at the Middle East Technical University in 2016. The PhD program was sponsored by the European Union's Erasmus Mundus Mobility with Asia scholarship and Turkey's TÜBİTAK fellowship (The Scientific and Technological Research Council of Turkey).
Nassef is the author of, among other articles: “Nation-State in IR and Islam” in the Journal of Islamic State Practice in International Law which was subsequently published in Islamic Perspective Journal, “The U.S. and Israel Securitization of Iran’s Nuclear Energy” in The Quarterly Journal of Political Studies of Islamic World, “The Palestinian Refugee Question: A Constitutive Constructivist Interpretation” in Alternatives: Turkish Journal of International Relations, and “Ideology that Spawns Islamist Militancy” in Frank Shanty’s Counterterrorism: From the Cold War to the War on Terror (ABC-CLIO, 2012). He also contributed some encyclopedic entries on civilization, nation-state, International Relations, nationalism, Qatar, nation, Suez Canal, etc. for various publishers such as ABC-CLIO, SAGE Publications, Inc., and Wiley-Blackwell. His first edited book International Relations and Islam: Diverse Perspectives was published by Cambridge Scholars Publishing on August 2013. He co-edited Islam and International Relations: Contributions to Theory and Practice with Deina Abdelkader and Raffaele Mauriello (published by Palgrave Macmillan in 2016).