[4] Before his election as Grand Mufti, Mubaje served as the Khadi of Mbale District, where he gained recognition for his leadership and efforts in community development.
[5] On December 11, 2000, he was elected as the Grand Mufti of Uganda, a position he has since held, advocating for unity among Ugandan Muslims and fostering national and international collaboration.
[9] [10]He has championed the establishment of educational institutions, supported economic empowerment programs, and encouraged youth involvement in developmental activities.
[13][14][15] His leadership has seen efforts to modernize the UMSC, improve governance structures, and promote the recognition of Islamic institutions within the Ugandan legal framework.
[20] In December 2023, an attempt was made by some members of the Uganda Muslim Supreme Council to suspend him from office, citing governance concerns.