The PhD candidate will both investigate and contribute to advancing the state of the art of gamification approaches in the design of the user engagement with digital therapeutics for mental well-being. The intervention design will be based on evidence-based protocols for mental health and well-being as active ingredients of the treatment, as well as different types of excipients for the intervention (conversational agents, VR environments, serious games, etc.). Background expertise in the areas of HCI, psychology and computer science is welcome.