Dr. Sonia Y. Hajjar joined the Department of Finance & Accounting at the Lebanese American Universityas an Adjunct Assistant Professor faculty member in June 2018. Dr. Hajjar has a Ph.D. in Economics and Management from the University of Liege in Belgium. She received her M.B.A. from the American University of Beirut (AUB), where she also completed a B.A. in Business Administration. She is a member of the Lebanese Association of Certified Public Accountants, as well as of the National Association of College & University Business Officers - USA.

She was the Assistant Vice President for Finance - Budget and Grants at the Lebanese American University (LAU) from October 2009 till May 2018. Prior to this, she was Director of Budget and Financial Planning and Grants Coordinator since 2001. Prior to joining LAU in 1995 as the Associate Comptroller for the Byblos Campus, Dr. Hajjar was a financial and administrative consultant and deputy country director for the Catholic Relief Services. She started her career at Deloitte & Touche in Beirut as a manager. She was a part-time instructor at the American University of Beirut (AUB) and LAU, where she taught courses in audit and accounting from 1990 to 1995.