Design, develop, and maintain the iOS SDK using Swift. Build SDK APIs that wrap REST services. Ensure SDK stability, performance optimization, and memory efficiency. Own SDK versioning, releases, and backward compatibility. Build, publish, and maintain SDK distribution using CocoaPods, supporting migration to Swift Package Manager (SPM). Develop and maintain unit and integration tests. Maintain SDK documentation and developer integration guides. Collaborate cross-functionally with Backend, Android, and Web/React Native SDK engineers.