Senior AI-Native Product Engineer, Mobile

About the teamThe Mercury Mobile team builds Zillow Instant Messaging (ZIM) - the conversation layer where millions of movers participate in a multiplayer, integrated experience to find their next home. We own the messaging experience on both iOS and Android, from the real-time messaging core through the rich, interactive content inside every conversation. Our larger organization is responsible for turning interest in a home into a completed tour, a durable relationship with an agent, and a successful move. Right now we are rebuilding what a messaging product can be when an AI assistant is a participant in the conversation rather than a feature bolted onto it.About the roleAs a Senior Software Development Engineer on Mercury Mobile, you will define how AI shows up inside ZIM on mobile - and you will do it on both platforms. This is deliberately a cross-platform role: you will work in Swift and Kotlin, and the architectural decisions you make will land on iOS and Android together rather than diverging. The problems are the interesting ones in mobile client engineering today: streaming AI responses into a live conversation without janking the UI, rendering multi-modal and richly structured content that exceeds what a message bubble was ever designed to hold, and building it all to work on a spotty connection in a driveway. You will have real ownership of the architecture, and a team that expects you to use it.You Will Get ToDesign and ship the mobile client architecture for AI in conversations - streaming responses, topic-based conversation structures, and multi-modal content rendering across iOS and AndroidOwn cross-platform architectural decisions for the ZIM messaging core, keeping Swift and Kotlin implementations converged rather than letting them driftBuild real-time, resilient messaging experiences that hold up on unreliable mobile networks, with observability and SLOs you definePartner directly with the AI, Web, and Backend teams shaping Zillow's conversationa