Also known as conversation designers or conversational user interface designers, these individuals are responsible for designing and building out voice user interfaces and making conversations between humans and computers as seamless as possible. The discipline as a whole is made up of several design disciplines including voice user interface design, interaction design, visual design, motion design, audio design and copywriting.
The goal of the conversation designer is like that of an architect, mapping out what users can do in a space, while considering both the user’s needs and the technological constraints. They curate the conversation, defining the flow and its underlying logic in a detailed design specification that represents the complete user experience. They partner with stakeholders and developers to iterate on the designs and bring the experience to life (source: Actions on Google)