Born in Aulnay-sous-Bois, in Seine-Saint-Denis, Île-de-France, he studied at Lycée privé catholique l'Espérance where he received a Baccalauréat S. He then studied medicine for a semester before moving to Mathematics/Information, graduating with a licence. He also studied sound engineering.
He started rapping at age 17. He released a mixtape, NQNTMQMQMB in 2012, followed by another mixtape Cours de rattrapage the same year. Both were re-edited in 2016 as a double CD released through his website. On 27 October 2014, he released his debut EP NQNT with a music video, Bonjour, finding success. It was followed by the release of EP NQNT 2 on 25 September 2015. On 20 January 2017, he released his debut album Agartha on Mezoued Records \u0026 Suther Kane Films, and on Millenium, Capitol, Universal; the album earned a platinum certification in France. A leak of song material resulted in the release of the EP project NQNT 3. On 2 February 2018, Vald released his second album XEU featuring collaborations with rappers Sirius, Suik'on Blaz AD and Sofiane; the album received a double platinum certification.