Mumajesi started his youth career with KF Tirana in 2011.[1] In the start of 2016 he was promoted in the first team of KF Tirana by coach Ilir Daja.[2][3]
Kamza
In August 2017 Mumajesi signed a three-year contract with FC Kamza becoming the 9th arrival in the just promoted Albanian Superliga team.[4]
Hessen Dreieich
On 11 September 2019, German Hessenliga club SC Hessen Dreieich confirmed, that Mumajesi had joined the club on a contract for the 2019–20 season.[5] He left the club at the end of the season.[6]
International career
Mumajesi received his first international call up at the Albania national under-21 football team by coach Alban Bushi for a gathering between 14 and 17 May 2017 with most of the players selected from Albanian championships.[7]