Khalid has held key roles such as Site Engineer, Technical Engineer, Laboratory Technical Manager, and Project Consultant. Notably, he managed quality assurance for building materials such as soil, concrete, asphalt, and paints, and was recognized as an expert engineer by the Engineers Syndicate. His leadership at S.A.A Geotechnical & Building Materials Testing involved overseeing lab operations and implementing quality training programs.
In recent roles, he has served as a Project Manager with the Gaza Community Mental Health Programme and as a Project Coordinator with Water Mission Organization, where he led the successful implementation of sanitation and maintenance projects. Currently, he is a Designer Engineer at Professional Contracting & Consulting Inc. in Michigan, contributing to residential and commercial construction projects.