[4] Mubiru began his coaching career in 2012 with Proline FC, where he was appointed as the manager on January 3, 2012, and served until October 27, 2013.
[8][9][10] In 2023, Abdallah was appointed as assistant coach of the Uganda National Senior (Women's) Team Crested Cranes, a position which he turned down due to personal reasons.
As they returned to their technical area, the Mashujaa FC goalkeeping coach attacked Mubiru with a blow to his face.
Despite the incident, Mashujaa FC won the game 1–0, securing promotion to the top flight and ending Mbeya City's 12-year stay in the Tanzania Premier League.
He served as an assistant manager starting on September 30, 2019, under head coach Milutin Sredojević during a critical period of FIFA World Cup qualification matches.