Complex sentence: Besides his career in University at Buffalo, he also held the position of Senior Adviser to the Chancellor of University of Tabuk System in Saudi Arabia and responsible for establishing the six campus University system according to US accreditation standards.
Split into simpler sentences: Besides his career in University at Buffalo, he also held the position of Senior Adviser to the Chancellor of University of Tabuk System in Saudi Arabia. He was responsible for establishing the six campus University system according to US accreditation standards.