Eng. Ahmed M. Al-Mahbashi is a geotechnical engineering researcher at King Saud University’s Bugshan Research Chair in Expansive Soils, where he has also served as a lecturer. He holds an MSc from King Saud University (2014) and a BSc from Sanaa University (2008), with prior professional experience at the Yemeni Ministry of Public Works and Highways. His research focuses on the hydromechanical and dynamic behavior and im-provement of unsaturated and expansive soils, particularly for pavement subgrades and sustainable geoenvironmental applications.