Muhammad J.

🚀 Senior iOS & Cross-Platform Developer | Swift, SwiftUI, Flutter, React Native I’m a Senior Mobile App Developer with 7+ years of experience building, improving, and shipping production-ready mobile applications. My expertise covers native iOS development with Swift, SwiftUI, and UIKit, along with cross-platform app development using Flutter and React Native. Over the years, I’ve built and launched 10+ iOS applications from the ground up and worked on mobile products across eCommerce, food delivery, mobile banking, education, sports and social communities, HR management, and other custom business applications. I can help if you need to build a mobile app from scratch, add features to an existing application, fix bugs or crashes, improve app performance, integrate APIs or third-party services, or take an application through testing and production release. My core mobile development services include: • Native iOS development — Swift, SwiftUI, UIKit • Cross-platform development — Flutter, React Native • New mobile app development from scratch • Existing app development, maintenance, and feature upgrades • REST API and third-party SDK integrations • Firebase and push notification integration • Stripe and Apple Pay integration • Maps, GPS, location, and geolocation features • Camera, audio, video, and other media features • Core Data and local data management • Bug fixing, crash resolution, and debugging • App performance and memory optimization • MVC/MVVM architecture and maintainable code • XCTest unit testing • App Store submission and release support I’m comfortable joining a project at any stage. I can take a new product from requirements to release, work from existing UI/UX designs and APIs, or step into an established codebase to implement features and resolve technical issues without unnecessarily disrupting existing functionality. I care about what happens after a feature is delivered too — code quality, maintainability, performance, user experience, and making sure the application remains practical to develop and scale over time. If you’re looking for an experienced iOS, Swift, SwiftUI, UIKit, Flutter, or React Native developer, send me your requirements, designs, existing application, or the issue you’re trying to solve. I’ll review the details and suggest a practical way forward.