Vishal K.

Are you building a mobile app from scratch and need it done right the first time? Or is your existing app built on React Native, Cordova, Ionic, or a legacy native stack and it's costing you time, money, and users? Either way, you're in the right place. I'm Vishal, a Senior Flutter Developer with 9+ years of professional experience, where I've delivered 50+ production-grade mobile apps across industries. Whether you're a founder validating your first MVP, an SME scaling your product, or an enterprise modernizing a legacy system - I build Flutter solutions that are clean, scalable, and built to last. 𝐖𝐡𝐚𝐭 𝐈 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐈𝐧: - App Migration (My Strongest Differentiator) Migrating from an old or unstable stack is one of the most high-risk, high-reward moves a product team can make. I've done it multiple times — successfully: ✔ Cordova → Flutter: Women's Club (business networking app) — crash rate dropped from 8% to under 1%, full feature parity preserved ✔ Flutter GetX → Flutter Bloc: Z Ride (ride-hailing platform, Nigeria) — 45% crash reduction, improved booking reliability, full backend and payment overhaul ✔ Legacy Android (Kotlin/Java) → Flutter: complete cross-platform rewrites with zero data loss I understand the complexity of migrations - legacy code, undocumented APIs, fragile state management, and client anxieties. I de-risk every migration with a structured audit, phased plan, and parallel testing before any cutover. 🚀 Building From Scratch → Startups to Enterprises From idea to App Store / Play Store, I've built complete products end-to-end: ✔ Startups & MVPs: Fast, lean, production-ready. I help founders move from wireframe to live app in weeks, not months. ✔ SMEs: Feature-rich, backend-integrated apps with CMS panels, admin dashboards, role-based access, analytics, and payment systems. ✔ Enterprises: Scalable Flutter apps with complex state management (BLoC, Riverpod), CI/CD pipelines, multi-environment builds, Firebase/Supabase backends, and team collaboration support. Real examples: ✔ Flowkar — Social commerce and creator rewards platform. Built from scratch. Scaled to 100,000+ downloads and 32,000 daily active users across 3 countries. ✔ Evbooth — EV charging platform with real-time charging control, Google Maps, and UPI payment integration. ✔ IPBEE — Healthcare mobile app (rated 5.0 ⭐ by client). 🤖 AI Integration into Flutter Apps AI is no longer a nice-to-have → clients expect it. I integrate AI features directly into Flutter apps cleanly and practically: ✔ OpenAI / GPT-4 chat and assistant features ✔ AI-powered recommendations, smart search, and personalization ✔ On-device ML and computer vision integrations ✔ AI chatbot flows with context-aware conversation management I don't just "add an API call" - I architect the AI layer properly so it's maintainable, cost-efficient, and scalable as your user base grows. 📦 Open Source Contributions on pub.dev I don't just build apps, I contribute back to the Flutter community. I've published production-grade packages on pub.dev under Flexion Infotech. 🌐 Flutter Web & Desktop Flutter isn't just mobile anymore. I build full Flutter Web and Flutter Desktop applications for dashboards, internal tools, admin panels, SaaS interfaces with the same codebase as your mobile app where applicable. This reduces development cost significantly for multi-platform products. 💼 Full-Stack Capability I don't just build the app, I handle the entire product delivery: ✔ UI/UX implementation from Figma, Adobe XD, or Zeplin designs ✔ Firebase (Auth, Firestore, Storage, Cloud Messaging, Crashlytics, Remote Config) ✔ Supabase backend integration ✔ REST API and GraphQL integration ✔ Custom backend development (Node.js, Django, when required) ✔ Payment gateways: Stripe, Razorpay, PayPal, UPI, in-app purchases ✔ Push notifications: FCM, OneSignal ✔ Maps & geolocation: Google Maps, MapKit, real-time tracking ✔ Social login: Google, Apple, Facebook, Instagram ✔ Play Store & App Store publishing, ASO, and update management ✔ CI/CD: GitHub Actions, Bitrise, Fastlane 🛠 Technical Stack State Management: BLoC, Riverpod, Provider, GetX, MobX Architecture: MVVM, MVC, MVP, Clean Architecture, SOLID principles Databases: Firestore, Supabase, SQLite (Sqflite), Isar, SharedPreferences Languages: Dart, Kotlin, Java, Swift (for native integrations) DevOps: Git, GitHub, GitLab, Bitbucket, CI/CD Tools: FlutterFlow, VS Code, Android Studio, Xcode 🏆 Why Clients Choose Me ✔ 100% Job Success Score on Upwork ✔ Top Rated badge & consistent 5-star delivery ✔ Published open-source Flutter packages on pub.dev ✔ 50+ apps delivered across healthcare, fintech, logistics, e-commerce, social platforms, etc. 💬 Let's Talk If you're building something new or rescuing something broken, let's have a quick 30-minute call. I'll give you an honest assessment of your project - no sales pitch, no obligation. Message me here on Upwork or book a consultation directly from my profile.