After starting out at the
Kadji Sports Academy in his native country, N'Gambi moved to France and signed with
Strasbourg in 1999. He spent three seasons with the club's B team, failing to make any league appearances for the senior side. However, N'Gambi made his official debut for Strasbourg in the
2001 Trophée des Champions, playing the entire match as the team lost 1–4 to
Nantes. In the summer of 2002, N'Gambi was loaned to
Ligue 2 club
Gueugnon. He eventually signed for the club on a permanent basis in 2003. After two more seasons there, N'Gambi switched to fellow league club
Montpellier. He was a regular member of the team's defensive line over the following three years, making 73 league appearances and scoring three goals. In June 2008, N'Gambi agreed transfer to Serbian club
Partizan, on a three-year contract. He struggled to make an impression at the club, appearing in only two
league games, before being released in the 2009 winter transfer window. Shortly after, N'Gambi joined Latvian club
Daugava. He switched clubs and countries again in July 2009, this time joining Greek club
Panthrakikos. In early 2010, N'Gambi was linked with Romanian club
Astra Ploiești, but the deal never went through. He was then linked with Malaysian side
Sarawak FA in late 2011, again without official confirmation. ==International career==