Fayezul became Chief Executive Officer for the International Federation of Accountants (IFAC) in February 2013. He had previously served at the World Bank, where his last two assignments were as vice president, corporate finance and risk management, and controller and vice president, strategic planning and resource management. Fazezul is a Fellow of Institute of Chartered Accounts of England and Wales. He has served on a number of high-level representative bodies: he was a member of the Public Interest Oversight Board (PIOB) from its formation in 2005 until 2010; he chaired the Global Steering Committee of the International Forum for Accountability Development and was a member of the Standards Advisory Council of the International Accounting Standards Board.