[1] He played with St. Patrick's High School Fighting Irish 1999 to 2002 and for one academic year, in 2002-2003, in University of Ottawa Gee-Gees.

In 2003, Mahmoud was offered a professional contract by Champville SC, a Lebanese club in Division A.

One year later, he moved to another Lebanese club Al Riyadi, where he stayed playing there until 2016.

[citation needed] Mahmoud is also a member of the Lebanon national basketball team that participated in the 2006 FIBA World Championship which took place in Japan and in 2010 FIBA World Championship in Turkey.

[citation needed] On January 23, 2013, it was noted in several publications, including FIBA.com, that he would be making his return to national team play and represent Lebanon in upcoming international tournaments.