Ahmed A.

Stop gambling with junior developers. Trust your app to 12+ years of proven expertise. With over a decade of experience and a 100% Job Success Score on Upwork, I don’t just write code—I engineer robust, scalable mobile solutions. From maintaining complex legacy systems in Objective-C to building cutting-edge AI-powered apps with SwiftUI and Core ML, I have done it all. I specialize in helping businesses—from startups like FitLens to established enterprises—turn technical challenges into high-performing assets. 🚀 WHERE I DELIVER THE MOST VALUE 🔹 Legacy App Modernization: Do you have an old Objective-C app that needs updating or rewriting in Swift? I am an expert in refactoring and modernizing legacy codebases without breaking functionality. 🔹 Advanced AI Integration: I bring apps to life using the Vision Framework, ARKit, and Machine Learning (as seen in my work with motion tracking and image recognition apps). 🔹 Performance Optimization: I fix crashes, memory leaks, and slow UI rendering to ensure your app runs smoothly on all devices. 🔹 End-to-End Development: From architecture design to App Store submission and CI/CD pipeline setup. WHY CLIENTS CHOOSE ME ✅ Top Rated & Verified: 100% Job Success Score with 30+ completed projects. ✅ Communication: Fluent English and proactive daily updates. ✅ Business-Minded: I focus on your ROI and user retention, not just lines of code. Ready to build a 5-star app? Click "Invite to Job" to start a conversation. Let’s discuss how my 12 years of experience can serve your project. 🛠️ TECHNICAL EXPERTISE & SERVICES 🔹 Core Development: Native iOS (Swift & Objective-C), SwiftUI, UIKit, Legacy Code Refactoring, MVVM/Clean Architecture. 🔹 Advanced Tech & AI: Machine Learning (Core ML), Computer Vision (Vision Framework), ARKit, OpenAI/ChatGPT API Integration. 🔹 Backend & Cloud: Firebase (Auth, Firestore, Analytics), AWS Amplify, GraphQL, RESTful APIs, Real-time Messaging (Socket.io/WebSockets). 🔹 Data & Storage: Core Data, Realm Database, Offline Caching, Secure Data Management. 🔹 Industries & Domains: Health & Fitness, Social Media, Video Processing, E-commerce Apps. 🔹 App Performance & Business: In-App Purchases (RevenueCat/StoreKit), Subscription Models, AdMob Integration, CI/CD Pipelines, TestFlight & App Store Submission.