He became an Associate Professor in neurosurgery in 1970. In the same year, he was assigned to the Associate Director of Neurosurgery Department of Johannes Gutenberg University of Mainz. However, Professor Samii could become a Full Professor in less than a year. At the same time, Shahid Beheshti University officials selected Majid Samii to the Dean of the Faculty of Neurosurgery position, but he rejected the offer due to his scientific activities at Johannes Gutenberg University.