Associate Professor, Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran - 31261, KSA.

Adjunct Professor, Center for Advanced Materials, Pennsylvania State University,U.S.A., (Sabbatical leave)

Visiting Professor and Research Scientist, G.K.S.S. Forschungzentrum, Geesthact, Germany.

Associate Professor, Metallurgical Engineering Department, Arya-Mehr University of Technology, Tehran, Iran.

Assistant Professor, Metallurgical Engineering Department, University of Engineering & Technology, Lahore, Pakistan.