Design, develop, and maintain advanced iOS applications using Swift, SwiftUI, and UIKit. Architect and implement modular, scalable codebases using Swift Package Manager (SPM). Apply clean architecture patterns such as VIPER (UIKit) and TCA (SwiftUI). Write unit tests and ensure high test coverage across core modules. Build testable components and maintain CI pipelines with automated testing. Integrate and manage backend services such as Firebase (including App Distribution). Handle App Store deployment, provisioning, and release cycles. Work with asynchronous programming using Combine and async/await. Manage local data storage using Realm and SwiftData. Collaborate with cross‑functional teams including designers, backend developers, and product managers. Ensure performance, quality, and responsiveness of applications.