Kinigamazi was born on 2 March 1983 in Gisenyi, Rwanda, and moved to Switzerland in at the age of fifteen to join family in the aftermath of the Rwandan genocide.
[2] After a streak of 16 wins to start his pro career he lost his first bout in 2011 to future European super featherweight champion Guillaume Frenois.
[2] On 18 November 2016, more than nine years after his last championship fight, he beat Spanish-based Congolese fighter Clark Telamanou for the vacant African lightweight title via majority decision with the scorecards reading 96–94, 96–94 and 95–95.
[6] Two fights later, on 9 June 2017, a 34-year-old Kinigamazi defeated Juan José Farias unanimously (117–106, 116–107, 116–107) to win vacant WBF super featherweight title.
[3] On 24 June 2021, he organized an event at the Salle Palladium in Geneva which featured the pro debut of Bryan Fanga, a Swiss prospect of Cameroonian origin who was seen by many as Kinigamazi's successor.