Google's Core team is seeking a Software Engineer III to help build the future of cross-platform UI with Server Driven UI (SDUI), focusing on Elements and xUIKit. As part of the Core team, you'll work on building technical foundations behind Google's flagship products, developing underlying design elements, developer platforms, product components, and infrastructure. The role involves creating beautiful, performant experiences on any device from a single codebase. You'll be part of a team that looks across Google's products to build central solutions, break down technical barriers, and strengthen existing systems. The position offers opportunities to impact important technical decisions across the company while working with cutting-edge technologies that serve billions of users. The ideal candidate will contribute to building essential building blocks for excellent, safe, and coherent user experiences while driving innovation for every developer at Google. This role combines full-stack development expertise with the chance to work on large-scale systems that power Google's most important products.