Youssri is a professor of mathematics at Cairo University, Egypt. His research focuses on numerical methods for differential equations, with a particular emphasis on fractional calculus. He obtained his M.Sc. in 2011 and Ph.D. in 2014, both in mathematics from Cairo University. With over 100 peer-reviewed publications, he has made substantial contributions to the numerical analysis of differential equations. In addition to his role at Cairo University, he is an adjunct faculty member in the Department of Mathematics and Actuarial Science at the American University in Cairo.