In parallel to teaching and research, Haddad worked as a consultant in various fields such as oil and energy, social and economic policies, refugees, issues of dialogue and social integration, governance and transparency, and public policy design, in his personal capacity or as CEO of "Haddad Business and Consulting" (from 2014 to 2019), and previously as partner-in-charge of "Dar al Tanmiya" and as a free-lance expert at the Economic and Social Commission for Western Asia of the United Nations, UN-ESCWA, the United Nations Development Program (UNDP) and the International Labor Organization (ILO).
Between 1983 and 1992, Haddad accumulated an extensive experience in the fields of communication and media, first as Editor-in-Chief of “Al-Iilm wa Teknoligia”, a monthly in Arabic specialized in Science, Technology and Development, then as economic editor at Agence France Presse's Beirut and Bahrein offices and in the foreign desk of An-Nahar newspaper, then as acting director of the Visnews's Beirut office.
DRM founding president is Nassib Lahoud (1944- 2012), who was former ambassador to Washington, member of the Parliament, Minister, and presidential candidate on behalf of March 14 Alliance in 2007.
He supervised or co-supervised the organization of several regional conferences and dialogue and conflict resolution seminars, including the "Syria Aid Forum for Emergency and Reconstruction" (2016), and seminars on “A Unified Lebanese Vision for the Palestinian Refugees Affairs In Lebanon” (2016), “Roadmap for a Civic State in Lebanon: Managing Diversity within Democracy” (2017), “National Dialogue for Building Citizenship and Managing Diversity in Iraq” (2018).
Haddad holds a PhD in Industrial Chemistry from Paris-6 University (Universite Pierre et Marie Curie), where he also attended MSc courses in Economics of Energy.