He was graduated in the Faculty of Oral and Dental medicine, Cairo University 1990. He got his master degree from the same university in 1997. In 2001, he finished his PHD in Endodontics from Faculty of Dentistry, Ain Shams University and promoted to be a lecturer in Endodontic department in the same university. He among others established the Egyptian association of Endodontists in 2001. He was awarded the best research prize in Ain Shams University 2005. In 2007, He became an associate professor in the same faculty. In 2009, he among others established the Arab Micro-Dentistry Association and became its president. He was assigned the head of the postgraduate continuous education in the faculty of Dentistry, Ain Shams University in 2010. In 2011, Dr. Hashem moved to the Faculty of Oral and Dental Medicine at Future University where he founded and started one of the finest education centers in the Middle East. Dr. Hashem conducts a postgraduate Micro-Endodontic course every month in this center since 2012. In 2012, he was promoted to full Professor position in department of Endodontics in the same University. He has been since 2012 visiting Metro-Health hospital in Cleveland, USA and conducting a micro-Endodontic course to the residents of the general residency program there. Dr. Hashem was chosen by the Egyptian Association of Endodontists to be Egypt country representative in the International Federation of Endodontic Associations in 2014. He became a certified speaker to FDI in 2014. He is serving also as the general secretary of the Egyptian Association of Endodontists since 2015. In the beginning of 2016, Dr. Hashem joined the board of the Egyptian Dental Syndicate and was acting as the head of the continuous education committee. He was nominated as a Fellow of the International College of Dentists (FICD) in 2016. In 2018, He was chosen Africa Regent director in the International Federation of Endodontic Associations (IFEA). In 2019, he became the head of endodontic dept., Future University. Currently, he is the head of Endodontic dept., Ain Shams University. Dr. Hashem is a member of several national and international associations. He serves as a reviewer in several prestigious international journals including JOE, IEJ and others.  He lectured in numerous national and international conferences. Prof. Hashem has more than 35 publications in Journal of Endodontics, Journal of Adhesive Dentistry, the International Endodontic Journal, Endodontic practice today, the Asian Journal for Animal Sciences and the Journal for Experimental and Toxologic Pathology. Prof. Hashem holds a private practice limited to Micro Endodontics in Cairo.