In 1996 he moved to Namibia to work as a lecturer in economics at the Institute of Higher Education.
In February 2016 President Edgar Lungu claimed that he had offered Hamududu the post of Deputy Finance Minister, but had been turned down.
He also served as an Executive Committee Member of the African Parliamentary Forum on Population and Development.
In November 2024, Hamududu endorsed president Hakainde Hichilema of the ruling UPND for presidential candidacy in the 2026 elections.
[7] Apart from politics, Hamududu is an entrepreneur with business interests in real estate, education, farming and mining.