Core Responsibilities App Development● Design, develop, and maintain high-performance native i OS applications using Swift and UIKit/Swift UI.● Build modular, scalable systems following MVVM and Clean Architecture principles.● Own technical design decisions and ensure long-term maintainability of the codebase. Feature Enhancement● Collaborate with Product, Design, and Backend teams to deliver features for a global user base.● Translate business and UX requirements into clean, testable implementations. Performance Optimization● Optimize applications for speed, scalability, and efficiency.● Improve app launch time, reduce binary size, and enhance runtime performance.● Identify and resolve memory leaks and performance bottlenecks using Instruments. Debugging & Testing● Debug complex production issues and ensure application stability.● Write and maintain unit and integration tests aligned with architectural boundaries. API & Real-Time Integration● Integrate RESTful APIs and Web Sockets with backend services.● Implement real-time features such as live updates, notifications, chat, or streaming.● Manage Web Socket lifecycle, reconnection strategies, and failure recovery. App Store Maintenance● Own the end-to-end app lifecycle, including build generation, App Store submissions, and releases. Code Quality & Engineering Excellence● Write solid, clean, and highly readable Swift code that is easy to maintain and extend.● Apply MVVM and Clean Architecture consistently to enforce separation of concerns.● Define and uphold coding standards through thoughtful design and peer code reviews.● Design APIs and abstractions with clarity, consistency, and extensibility.● Proactively reduce technical debt while balancing delivery timelines.● Ensure production-grade quality through robust error handling and defensive programming.● Mentor team members and promote clean code principles and architectural discipline. Required Qualifications & Skills Education● Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field. Experience● 5+ years of native i OS development experience with published App Store applications.● Hands-on experience with MVVM, Clean Architecture, and Web Socket-based real-time features. Technical Proficiency● Strong expertise in Swift.● Deep understanding of UIKit, Swift UI, Cocoa Touch, Core Data, Core Animation, and AVFoundation.● Strong experience with async/await and Combine for asynchronous and reactive programming.● Experience with URLSession Web Sockets and modern networking patterns.● Strong knowledge of dependency injection, modular design, and protocol-oriented programming.● Experience with memory management and performance tuning using Instruments.● Proficiency with Git and collaborative workflows. Preferred Qualifications (Bonus Skills)● Experience with e-commerce, streaming, or high-traffic consumer applications.● Experience working in fast-paced, high-scale product environments.● Understanding of background execution, push notifications, and real-time synchronization. Work Environment● Fast-paced development environment with rapid iteration cycles.● Close collaboration with global teams across China.● Daily use of JIRA, Microsoft Teams, and Git for delivery and communication.