Sir Demis Hassabis, the joint winner of the chemistry Nobel prize, started his career in the tech world as a video game designer.He gained expertise in computer science and cognitive neuroscience before co-founding the AI startup DeepMind, which was acquired by Google.Hassabis currently serves as the CEO of Google DeepMind and was knighted for his contributions to AI.His work in using AI to predict and design protein structures led to the joint Nobel prize with his colleague and an American academic.