Carl-Johann "CJ" Simon-Gabriel is Co-Founder & CEO of Mirelo AI, on a mission to give every video and game the sound it deserves. A classically trained organist and an AI scientist by training, he spent a decade at the frontier of machine learning: a PhD under Bernhard Schölkopf at the Max Planck Institute for Intelligent Systems, a postdoc at ETH Zürich, and work on model robustness at AWS and Meta's FAIR lab. He co-founded Mirelo with fellow researcher-musician Florian Wenzel. Backed by $44M from Index Ventures, Andreessen Horowitz, Atlantic and angels including Arthur Mensch (Mistral) and Thomas Wolf (Hugging Face), Mirelo builds AI models that generate film-grade, perfectly synchronised sound for any visual content in seconds — then let anyone refine it with expressive control.