In this role, you will design and build a foundational extension framework from the ground up, enabling a new generation of rich messaging experiences. Partners with Product Managers and UX Designers to translate user needs into elegant technical solutions. Collaborate directly with the Android OS team to influence core platform APIs, ensuring your work has an impact far beyond the Messages app. Work with fellow engineers to define the architecture and best practices for features that will be used by billions. Your work will directly impact one of the most-used apps on the planet. Join working groups and break new ground in the future of Kotlin, UX architecture, or Experimentation for products at planetary scale. You will solve fascinating technical problems related to building scalable frameworks and rich, interactive user experiences.