[1] Mamo works as a freelance photographer in collaboration with Redux Pictures, covering economic, political, and social issues, most notably the European migrant crisis and the Iraqi Civil War.
His 2017 image of a convalescing Iraqi boy won the 2nd place prize for the World Press Photo of the Year 2018's People category.
[2][1] In July 2018 a series of photos Mamo produced in 2011[3] titled Dreaming Food generated controversy.
The photographs, which depicted poor Indian farmers covering their eyes behind a table laden with fake food, were decried by social media as being insensitive, with the outcry in turn generating extensive media coverage.
[8] During the 2019-2020 coronavirus pandemic, Mamo documented and photographed his isolation in Catania, Sicily.