Born in Paris, Oniangué joined the youth system at Rennes in 2005 from Caen and made his senior debut in 2008.

[2] On 31 July 2009 Rennes announced that Oniangué would join Ligue 2 side Angers on loan for the 2009–10 season.

[7] On 15 August 2016, Oniangué signed a four-year contract with English Championship side Wolverhampton Wanderers for an undisclosed fee.

[10] After falling out of favour with then Wolves head coach Paul Lambert, on 16 January 2017, Oniangué joined Ligue 1 club Bastia for the rest of the 2016–17 season.

[13] Oniangué made his debut for the Congo national team in a 2010 World Cup qualifying match against Sudan on 11 October 2008.