Hassan Z.

If you've ever hired a developer who disappeared mid-project, struggled to implement complex features, or delivered messy code that breaks on release, you already know how expensive the wrong choice is. I’m Hassan, a Senior Flutter & AI Mobile Engineer with 5+ years of experience shipping production iOS and Android apps. With a 100% Job Success Score, I focus on turning complex business requirements into clean, high-performing mobile applications with reliable AI integrations. What I Build & Integrate: AI & Machine Learning: OpenAI (GPT-4o), Google Gemini, & DeepSeek API integrations, real-time streaming LLM responses, custom AI chatbots, on-device ML Kit (OCR, text recognition, face detection), and vector search for smart context-aware apps. Cross-Platform Mobile Apps: High-performance iOS & Android applications built from a unified Flutter codebase for E-Commerce, HR Tech, SaaS, and Social platforms. Backend Architecture: Firebase & Supabase (Auth, Firestore, Cloud Functions, FCM, Realtime DB) + secure Node.js/Python microservices for AI orchestration and safe API key management. Payments & Monetization: In-App Purchases (RevenueCat, Apple Pay, Google Pay) and Stripe payment gateway setups. Technical Standards & Code Quality: Clean Architecture (BLOC, Riverpod, Provider) ensuring scalable, maintainable code. Production-ready deployments with a 100% App Store and Google Play approval rate. Quick response time, plain English updates, and transparent milestone tracking. If you are launching a new app or upgrading an existing product with modern AI features, send me an invite. I’ll provide an honest scope, technical breakdown, and timeline within a few hours.