Usman L.

Full Stack Developer | 7+ Years | CTO-Level Architecture | Mobile, Backend & Cloud I help startups and enterprises turn ambitious app ideas into fast, stable, production-ready products - mobile app, backend, and cloud infrastructure, all under one roof. I'm a Software Engineer with 7+ years of experience building Flutter and native Android apps, backed by hands-on backend and cloud architecture experience with Node JS, Express, and Firebase Functions. I'm currently CTO for a large-scale, multi-module social and social-commerce platform - the kind of product that combines live streaming, in-app virtual economies (wallets, coins, gifting), real-time chat, AI-driven content safety, and e-commerce in a single system serving real users at scale. That experience shapes how I approach every project: I don't just write code that works today, I build architecture that survives growth, new features, and real production traffic. I've shipped apps across e-commerce, fintech, healthcare, real-time communication, and AI-powered systems - from early-stage MVPs to complex, cloud-based enterprise platforms. WHY CLIENTS HIRE ME - Full-stack ownership: app, backend, and cloud architecture, so nothing gets lost between separate teams - Real experience with complex, high-scale systems, not just simple CRUD apps - CTO-level architecture thinking: I catch structural issues before they become expensive rebuilds - Strong UI/UX eye: your app performs well and looks the part - Clear, proactive communication: no ghosting, no surprise delays - On-time delivery without cutting corners on code quality - Long-term support after launch: I don't disappear post-delivery SERVICES - Cross-platform iOS and Android apps (Flutter/Dart) - Native Android apps (Kotlin, Java) - Backend API development (Node JS, Express) - Serverless and cloud-based backend architecture (Firebase Functions, Google Cloud) - Database design and management (Firestore, SQL) - Live streaming and real-time video apps - Virtual economy systems: wallets, coins, in-app gifting, monetization - AI-powered features and AI integration (LLM/API-based, content moderation, smart recommendations) - Multi-module social and social-commerce platforms - E-commerce apps with cart, checkout and payment gateway integration - Real-time chat and messaging systems (Firebase, WebSockets, Socket IO) - On-demand and delivery apps (Google Maps, live tracking) - Enterprise apps with role-based access and admin dashboards - SaaS apps with subscriptions and in-app purchases - Scalable multi-developer architecture for growing platforms - Flutter app bug fixing and performance optimization - Figma to Flutter: pixel-perfect UI implementation - App Store and Google Play deployment TECH STACK Frontend/Mobile: Flutter, Dart, Kotlin, Java Backend: Node JS, Express JS, Firebase Functions, REST APIs, GraphQL Cloud: Google Cloud, Firebase Hosting, Serverless Architecture Database: Firebase, Firestore, SQLite, SQL Architecture: Clean Architecture, MVVM, MVC, Modular Design, Microservices concepts State Management: BLoC, Provider, GetX, Riverpod Payments: Stripe, In-App Purchases, In-App Subscriptions Maps and Location: Google Maps API, MapBox, Real-Time Tracking Realtime: Socket IO, WebSockets, Firebase Realtime DB, Live Streaming AI: LLM/API Integration, AI Content Moderation, AI-Powered Recommendations Notifications: Firebase Cloud Messaging, Push Notifications Design: Figma, UI/UX Prototyping DevOps: Git, GitHub, CI/CD, App Store and Play Store Deployment INDUSTRIES SERVED E-commerce, Fintech, Healthcare, Social Platforms and Live Streaming, Real-Time Communication, AI-Powered Platforms, Enterprise SaaS HOW WE WOULD WORK TOGETHER 1. Share your app idea or existing codebase 2. I review scope and send a clear plan with timeline: mobile app, backend, and cloud architecture all covered 3. Development in transparent milestones: you see progress, not silence 4. Testing, deployment, and post-launch support Send me a quick message with what you're building. I typically reply within a few hours with a clear plan and honest timeline.