3 February 2016 Last updated at 10:35 GMT
Since she started the J Mobile Laundry Service just over a year ago in the capital, Kampala, Ms Mayanja has built up a workforce of more than 30 women.
J Mobile's work has not gone unnoticed, and was recognised by US President Barack Obama at his Young African Leadership Initiative summit last year.
Ms Mayanja has ambitions of developing the company and strongly believes that women can make a big difference in the world of business.
Women of Africa is a BBC season recognising inspiring women across the continent. The second series, Africa's New Businesswomen, introduces eight female entrepreneurs who are finding success in their country - and beyond.
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Jamila Mayanja runs a door-to-door laundry service in Uganda which helps its employees save enough money to launch their own businesses.