Development manager at Uni-XR, a global initiative for promoting and pooling French talent in the fields of virtual reality, enhanced reality and mixed reality, and a brand dedicated to accelerating the VR/AR ecosystem in France and around the world. He is also the founder of Fabula, a transdisciplinary magazine that gives a voice and platform to artists and creative professionals working with immersive media. Siouffi is a co-founder of the Dingdingdong collective with artists and thinkers including Emilie Hermant, Isabelle Stengers, Vinciane Despret, Bruno Latour and Anne Collod, and the producer of documentaries such as Donna Haraway: Storytelling for Earthly Survival.

Before he specialised in virtual reality, he was an international executive in the technology and entertainment sector (Activision-Blizzard, Electronic Arts and Jocs Rockstar, in highly popular games such as Half Life, World of Warcraft, FIFA and Grand Theft Auto).