Z AIN S HAHZAD

Led development and maintenance of 10+ production iOS applications used across multiple industries. Managed mobile development workflows including sprint planning, GitHub issue management, task estimation, release planning, and project tracking. Collaborated with international clients for requirements, technical solutions, effort estimation, and on-time delivery. Conducted code reviews, mentored junior developers, and upheld development standards. Implemented complex business logic using Swift, UIKit, MVVM, Swift Concurrency (async/await), and RESTful APIs. Integrated REST APIs via URLSession and Firebase services including Authentication, Firestore, Cloud Messaging, and push notifications; also integrated payment gateways and third-party SDKs. Built AI-powered mobile features using OpenAI APIs and developed augmented reality experiences using ARKit.

Developed and maintained AR iOS applications using Swift, UIKit, and ARKit. Built immersive AR experiences such as 3D object placement, image recognition, scene tracking, and real-world surface detection. Optimized AR session performance, memory consumption, and rendering efficiency for stability across supported iOS devices. Integrated RESTful APIs and Firebase to provide dynamic content, user data synchronization, and cloud-driven AR experiences. Contributed to App Store releases and ongoing maintenance of AR-focused applications in collaboration with designers, backend developers, and product stakeholders.

Led the development and deployment of e-commerce, augmented reality (AR), and AI-powered iOS applications, ensuring high performance and exceptional user experience. Mentored and guided junior developers, fostering a collaborative environment and improving overall team productivity. Enhanced application performance by 30% through optimization and architectural improvements. Integrated ARKit to deliver immersive AR experiences, significantly increasing user engagement. Collaborated with cross-functional UI development, API integration, and debugging, resulting in a 15% reduction in crash rates and improved app stability. Gained hands-on experience with Swift, Xcode, and Apple's Human Interface Guidelines, laying a strong foundation for professional iOS development.