At Capital One, building beautiful, rich, and performant mobile applications for iOS and Android is essential to providing a best-in-class experience for our customers and delivering on our mission to change banking for good. However, as our applications have grown in both size and scope — and the number of developers contributing to our codebases has increased — we’ve encountered numerous challenges, including long build times, duplicated code, highly coupled dependencies, and limitations of our dev tooling. In this presentation, we’ll discuss in detail the investments in our mobile platform that we’ve made over the years to conquer these obstacles, and our approach to repository management, application architecture, programming patterns, and test automation that empowers our mobile developers to deliver great customer experiences at scale.