John O.

Mobile App Developer | UI/UX-Driven Engineering | Flutter I started my career in creative design, which gave me something most developers lack — an instinct for detail. Every pixel, every transition, every interaction matters. That design-trained eye now drives how I build mobile apps: intentional, polished, and user-first. ✅ Top Rated on Upwork ✅ 100% Job Success Score ✅ Free Consultation ✅ Long Term Availability As a Flutter instructor and developer, I specialize in cross-platform development, delivering clean, structured codebases built for scale. My projects follow clear architectural patterns — separation of concerns, modular components, and maintainable state management — so your app grows without turning into technical debt. When timelines are tight, I strategically leverage cutting-edge AI tools to accelerate development without compromising quality. This means faster turnarounds on prototypes, iterations, and production-ready builds — while maintaining the same standard of craftsmanship. 🤝 What I Bring to Your Project 🔶 Pixel-perfect implementation that matches your designs exactly 🔶 Scalable architecture with clean, well-organized code 🔶 Cross-platform apps (iOS & Android) from a single codebase 🔶 A designer's attention to detail with an engineer's discipline 🔶 Efficient delivery through smart use of modern AI-assisted workflows 🏭 Companies & Projects I've Worked With I've delivered solutions across multiple industries, including: 🔴 Baseball Rules in Black and White (Sports) 🔴 Troo Inc (SaaS) 🔴 Renok (FinTech) 🔴 CropCura (Agriculture) 💡 Core Expertise 🔺 Flutter — Mobile, Web & Kiosk 🔺 Node.js / Express 🔺 Firebase 🔺 Hygraph (GraphCMS) 🔺 Cloudinary 🔺 MongoDB 🤷 Why Work With Me? ✅ Creative Design background — I see what others miss before it reaches your users ✅ Clean, scalable code — no shortcuts, no spaghetti, no future headaches ✅ Flutter instructor — I don't just use the framework, I teach it ✅ AI-augmented workflow — faster delivery without sacrificing quality ✅ Clear communication — you'll always know where your project stands ✅ End-to-end ownership — from architecture to pixel-perfect UI, I handle it all 🏅 Highlighted Skills Mobile App Development | Mobile App Developer | Flutter Mobile App | Flutter Mobile App Developer | Flutter Mobile App Firebase | Flutter Mobile App Dart | Flutter Developer | Flutter Cross Platform App | Flutter iOS App Developer | Flutter Android App Developer | Dart Developer | AI Mobile App Developer | AI Mobile App Development | AI Flutter Developer | UI/UX Mobile App Developer | UI/UX App Design to Code | Mobile App UI Developer | Pixel Perfect Mobile App | Firebase Mobile App Developer | Firebase Flutter App | Node.js Mobile App Backend | Full Stack Mobile App Developer | Full Stack Flutter Developer | Mobile App Development Consultation | iOS Mobile App Developer | Android Mobile App Developer | Hybrid Mobile App | Cross Platform Mobile App Developer | Flutter Web App Developer | Flutter Kiosk App | Riverpod Flutter App | Mobile App Architecture | Scalable Mobile App Development | Clean Code Mobile App Developer | Mobile App Redesign | Mobile App Maintenance | REST API Mobile App Integration | MongoDB Mobile App Backend | Mobile App Developer for Startups | FinTech Mobile App Developer | SaaS Mobile App Developer 🚨 Exclusive Offer: Every project comes with a free App Landing Page — designed and delivered alongside your app, ready to launch. If you need a developer who builds apps that look as good as they perform - let's talk.