Experience of more than twenty years in the field of economic analysis and policy-making, as well as in the field of investment and finance, including valuation, feasibility studies, financial restructuring and Islamic finance. He supervised and participated during his work on the preparation of dozens of feasibility studies, evaluation and restructuring of companies in various sectors in Egypt and the Kingdom of Saudi Arabia Turkey, Malaysia, Senegal and others. He also prepared several sectoral studies and financial evaluation for most sectors in the Egyptian and Saudi markets and other markets. Al-Najjar holds a PhD in Islamic Finance and Banking from the International Islamic University in Malaysia, and another PhD in economics from Al-Azhar University in Egypt. He lectured in many training courses on the topics of: Islamic financial markets, financial restructuring, corporate valuation, investment portfolio management and others. He also has several books and research published in peer-reviewed and internationally classified journals.