Websocket, MVVM, Uikit, Stripe, Rest Apis, Swift, CoreMotion, Xcode Cloud, SwiftUI, async-await, Razorpay, HealthKit, payment SDKs, fastlane, identity verification, GitHub Actions, CI CD pipelines, offline-first patterns, Combine, App Store Connect, protocol-oriented programming

Git, Objective-c, Restful Apis, Swift, custom UI controls, application design patterns, performance optimization, iOS SDK toolchain