Born in Senegal but based in Italy throughout his career, Ndiaye made his professional debut on 1 October 2005, scoring a fourth-round knockout against Thomas Dodoo.
His first opportunity at fighting for a major regional championship—the European Union super-middleweight title—was on 14 March 2008, which ended in a split decision loss to Lolenga Mock.
[1] On 11 November 2011, Ndiaye scored a late twelfth-round stoppage against Andrea Di Luisa to win the now-vacant European Union super-middleweight title on his second attempt.
[3] Ndiaye fought to a controversial split draw with Christopher Rebrassé on 8 June 2013, with the vacant European super-middleweight title on the line.
[4] In their EBU-mandated rematch on 22 March 2014, Rebrassé won the aforementioned title by stopping Ndiaye in four rounds.