Hi, Senior Flutter and FlutterFlow Developer specializing in building high-performance, production-ready iOS and Android applications integrated with AI, Firebase, and scalable architectures. I have over 7 years of development experience, I help startups, SaaS platforms, and digital brands transform complex product ideas into fast, responsive, and secure mobile apps. Whether you need a native Flutter application built from scratch, a rapid MVP designed in FlutterFlow, or smart AI agent and LLM integrations directly inside your mobile UI, I deliver clean, modular code that scales. Core Technical Expertise - Frameworks: Flutter, FlutterFlow, Dart - Mobile Ecosystem: iOS & Android deployment, App Store Connect, Google Play Console - AI & Automation: OpenAI API, Claude API, mobile AI agents, LLM integrations - Backend & Database: Firebase, Supabase, PostgreSQL, RESTful APIs, WebSockets - Integrations: Stripe, PayPal, Twilio, WhatsApp APIs, third-party CRM setups - Architecture: Clean Architecture, Bloc, Provider, state management, offline-first data sync How I Work With You - Architecture Planning: I design the app structure properly from day one to avoid technical debt. - Rapid Development: Utilizing Flutter or FlutterFlow to hit your launch deadlines efficiently. - API & AI Integration: Connecting your frontend to robust backend systems and AI models. - Testing & Optimization: Ensuring 60fps animations, memory efficiency, and smooth cross-screen responsiveness. I prioritize clear communication, transparent project milestones, and strict technical ownership. Let's discuss your project requirements and build a high-converting mobile product. Contact me to get started. Thank you, Chintan.

I help startups and businesses build high-performance mobile applications for iOS and Android using Flutter, Firebase, and Node.js. Over the years, I've worked on booking platforms, telematics systems, real-time tracking applications, marketplaces, wellness apps, and AI-powered products. My focus is not just writing code but delivering mobile apps that are scalable, reliable, and ready for production. What I Can Help You Build ✔ Cross-platform mobile apps with Flutter ✔ MVP development for startups ✔ Firebase Authentication, Firestore & Cloud Functions ✔ REST APIs & Node.js backends ✔ Google Maps, GPS Tracking & Geolocation ✔ Push Notifications (FCM) ✔ Real-time Chat & Live Data Applications ✔ Payment Gateway Integration (Stripe, PayPal, In-App Purchases) ✔ FlutterFlow Development & Custom Code Extensions ✔ AI Integrations using OpenAI & Claude APIs ✔ App Store & Google Play Deployment Recent Projects Telematics Tracking Platform Real-time vehicle tracking GPS monitoring Driver activity tracking Cross-platform Flutter application LINES Real-time nightlife and event platform Custom APIs Redis caching High-performance backend architecture Stayhopper Hotel and apartment booking application Payment integrations Booking workflows Mobile-first experience Pet Care Platform Community-driven mobile application Location-based services User-generated content Firebase backend Why Clients Hire Me ✓ Top Rated Upwork Freelancer ✓ Proven track record with Flutter & Firebase projects ✓ Strong communication and project ownership ✓ Clean, maintainable code ✓ Focus on performance and user experience ✓ Long-term support after launch If you're looking for a developer who can take your idea from concept to App Store and Google Play release, let's discuss your project.

$54𝗞+ 𝗠𝗥𝗥 𝗯𝘂𝗶𝗹𝘁 𝗳𝗼𝗿 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 | 𝗕𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝘁𝗵𝗮𝘁 𝗴𝗲𝗻𝗲𝗿𝗮𝘁𝗲 𝗿𝗲𝘃𝗲𝗻𝘂𝗲 Flutter Developer specializing in cross-platform iOS and Android mobile app development, from MVP to production release with a million downloads on both app stores. I've shipped 50+ Flutter mobile applications for both Android & iOS, including 2 𝐚𝐩𝐩𝐬 𝐰𝐢𝐭𝐡 1𝐌+ 𝐝𝐨𝐰𝐧𝐥𝐨𝐚𝐝𝐬 and a fintech platform processing €3M+ in monthly transactions across 100+ countries. Clients hire me when they need a Flutter developer who delivers production-ready mobile apps, not just prototypes. What I built: - Flutter cross-platform app development (iOS & Android) - Full MVP mobile app development; built in weeks, not months - Flutter app architecture (BLoC, Riverpod, Clean Architecture) - REST API integration & third-party SDK integration - Firebase integration (Auth, Firestore, FCM, Cloud Functions) - Supabase backend integration - Payment gateway integration (Stripe, in-app purchases, subscriptions) - Push notifications & real-time features - Geolocation & Maps integration (Google maps and Mapbox) - CI/CD deployment pipelines - Mobile analytics & attribution SDK integration (AppsFlyer, Meta SDK, Adjust) - App Store Optimization (ASO); metadata, screenshots, keywords - App Store & Google Play Store submission & release management - Retention & re-engagement setup (push campaigns, deep linking) - Flutter bug fixing, performance optimization & code refactoring - AI-powered Flutter apps, GPT integration, AI chat features, intelligent automation - AI-accelerated development using Cursor & Claude, faster delivery, cleaner code I also build apps as an indie developer. I've independently designed, built, and published my own Flutter apps in health, fitness, and productivity, apps that generate real revenue and rank in the App Store. This means when you bring me an app idea you want to monetize, I'm not just a developer executing a brief, I've been in your shoes. I understand user retention, ASO, in-app monetization, and what it takes to get downloads. For solo founders and indie app builders, this makes a real difference. I work across the complete Flutter mobile app development lifecycle: frontend Flutter development, API integration, testing, performance optimization, and App Store / Play Store release. Beyond large-scale apps, I help startups validate ideas with clean, scalable MVP architecture, structured for growth from day one. My approach: clean Flutter architecture. Reliable API integrations. Stable releases. Maintainable, scalable code. Top Rated Plus | 100% Job Success | $100K+ earned | 50+ apps delivered | 1 million app downloads Message me with your requirements and I'll outline the right technical direction.

Need a Flutter developer who can turn your idea into a clean, scalable, production-ready app? I’m a Top Rated Senior Flutter Developer with 7+ years of experience, 20+ live apps, 100% Job Success Score, and hands-on experience building AI apps, marketplaces, ERPs, delivery apps, streaming apps, and API-driven mobile products. I help founders, startups, and businesses build Android and iOS apps that are not just good-looking, but stable, maintainable, and ready for real users. Here are a few examples of what I’ve built: 🚀 Urban India - Grocery Delivery App Built a Flutter grocery delivery app for iOS and Android with Stripe payments, real-time tracking, loyalty rewards, cashback, and order flow optimization. Result: 5K+ downloads, 4.8-star rating, and 28% increase in repeat orders. 🏗️ BuildIndia ERP - Enterprise Field Sales App Built a Flutter ERP app for 500+ field sales users with GPS tracking, analytics dashboards, CRM, selfie verification, team hierarchy, and real-time reporting. 🎵 Jazzbooks Streaming - iOS Audio Learning Platform Built a music education platform for 2,000+ musicians with custom audio playback, real-time tempo control, key changer, and dual-track playback using AVFoundation. ⚖️ Daily Case - Lawyer CRM Built a full-stack CRM using Flutter, Node.js, GraphQL, and PostgreSQL with case tracking, billing, document vault, court reminders, and RevenueCat subscriptions. 🤖 Calry AI and Expirely - AI Mobile Apps Designed, built, and launched two AI-powered Flutter apps solo in under 3 months. Features included photo-based food recognition, OCR date scanning, barcode lookup, and voice commands. What I can help you with: ✔ Flutter app development from scratch ✔ MVP development for startups ✔ AI-powered mobile apps ✔ Firebase integration ✔ REST API and GraphQL integration ✔ Payment integration: Stripe, Razorpay, RevenueCat, Apple IAP, Google Play Billing ✔ Push notifications and deep links ✔ Maps, GPS, and real-time tracking ✔ Chat, voice, video, and media features ✔ App redesign and performance optimization ✔ Play Store and App Store deployment ✔ Existing Flutter app takeover, cleanup, and bug fixing Tech I work with: Flutter, Dart, Firebase, Firestore, FCM, REST APIs, GraphQL, Node.js, PostgreSQL, BLoC, Riverpod, Provider, GetX, Clean Architecture, MVVM, Stripe, Razorpay, RevenueCat, Fastlane, Codemagic, GitHub Actions. Why clients work with me: ✔ I think like a product owner, not just a coder ✔ I write clean, maintainable Flutter code your team can extend ✔ I can handle frontend, backend integration, releases, and post-launch fixes ✔ I communicate clearly and respond fast ✔ I can work with both technical teams and non-technical founders ✔ I provide 30 days of free bug fixes after delivery I have worked across: Fitness, AI apps, delivery, ecommerce, marketplaces, dating apps, taxi booking, education, travel, booking, events, CRM, ERP, media, streaming, and real-time apps. If you need a Flutter developer who can understand your product, suggest practical solutions, and ship a stable app, send me a message. I usually respond within 2 hours. FAQ: Q: Can you build the app from scratch? A: Yes. I can help from idea, feature planning, and app flow to Flutter development, API integration, testing, and store release. Q: Can you work on an existing Flutter app? A: Yes. Share the repository and I can review the codebase, identify issues, and suggest the best next steps. Q: Can you handle backend work too? A: Yes. I can work with Firebase, REST APIs, GraphQL, Node.js, and PostgreSQL depending on your project needs. Q: Do you provide post-launch support? A: Yes. I provide 30 days of free bug fixes after delivery. Q: Do you work with non-technical founders? A: Yes. I can help turn your idea into a clear feature list, technical plan, and build roadmap. Skills: Flutter Dart Mobile App Development Flutter App Development iOS Development Android App Development Cross Platform App Development Firebase Firebase Cloud Firestore Firebase Authentication Firebase Cloud Messaging REST API GraphQL Node.js API Integration Mobile UI Design Mobile App Redesign Bug Fixing App Performance Optimization AI App Development ChatGPT Integration Payment Gateway Integration Stripe RevenueCat In-App Purchases Google Maps API Push Notifications Mobile App Testing App Store Upload Google Play

Hello! 👋 I’m a full-stack developer with a passion for building modern, scalable, and intelligent applications. I work with: Flutter & React – creating smooth, cross-platform apps and responsive UIs Node.js & Express – developing fast, scalable backends Mysql &MongoDB & Firebase & Supabase & Appwrite – managing reliable data storage AI & ML Integration – adding smart features like chatbots, recommendations, and automation I stay up-to-date with the latest technologies to deliver clean, maintainable code and help bring your ideas to life. Whether you need end-to-end development, frontend polish, or backend expertise, I’ve got you covered. Let’s connect — I’d love to help build your next great product! 🚀

Hello ! I'm a dedicated Flutter developer with a passion for creating seamless user experiences and applications. If you're seeking a freelance developer to bring your ideas to life or enhance your existing projects, you've come to the right place. Here's What I Bring to the Table: Full-Stack Project Environment: I provide a complete development environment where you can get clear guidance for your project — including what features to build, which platforms to use, and which technologies are best suited for your goals. Front-End Expertise: I specialize in crafting stunning and responsive user interfaces that not only look fantastic but also provide an exceptional user experience. Flutter Product Building: I have a proven track record of building high-quality Flutter applications. My work is characterized by clean code, robust functionality, and a keen eye for design. Flutter Facilitation: Whether you need assistance with Flutter-related challenges or guidance on your project, I'm here to help. I can provide valuable insights and expertise to ensure your project's success. My Experience Speaks Volumes: Firebase Integration: During my internships, I honed my skills in integrating Firebase as a backend for Flutter applications. I can seamlessly connect your app to Firebase services for real-time data management. API & Backend Integration: I specialize in integrating RESTful APIs and Firebase backend services with Flutter applications. My experience includes API authentication, real-time database integration, cloud functions, push notifications, and efficient data handling to ensure reliable and scalable mobile applications. I've also worked on numerous other applications, each contributing to my diverse skill set and expertise. If you're looking for a reliable, detail-oriented, and deadline-driven Flutter developer to bring your projects to fruition, I'm ready to put in the hard work and dedication required to meet and exceed your expectations. Let's collaborate and turn your ideas into reality. Feel free to reach out to discuss how I can contribute to your next venture. Looking forward to connecting and creating something amazing together!

🏆 Top-Rated Developer | 100% Job Success Score 🏆 🤚🏻Hello, this is Rajni, I'm a Flutter Developer with over 5+ years of experience in the development field from India. who loves making beautiful, outstanding Designs and apps. I believe communication is key to any successful project, and I can start your project right away. I am Available full-time (40 Hours/Week). ☑️ 𝗦𝘁𝗿𝗼𝗻𝗴𝗲𝘀𝘁 𝗦𝗸𝗶𝗹𝗹𝘀 ✅ Dart (Flutter) ✅ Flutter Flow ✅ Web Service Integration: HTTPS, RESTful, JSON/XML, SOAP ✅ Social Media Integration: Facebook, Twitter, LinkedIn, Google+ ✅ Cloud Service: AWS, Amplify, S3, EC2, Elastic Beanstalk, SNS, Cloud Watch, Elastic Load Balancers ✅ In-App Purchase and In-App Billing, Paypal, Stripe, Paytm, GPay, etc. ✅ Google Maps, Foursquare, Geolocation, GPS, Geofencing, Open Street Maps ✅ Push and Local Notification, Google Analytics, MixPanel, Socket.io, GainsightPX ✅ Barcode/QRCode recognition and generation ✅ MongoDB, MySql, SQLite, PostgreSQL ✅ Amazon, Heroku, Git, Bitbucket, TestFlight, GitHub, GitLab ✅ Trello, JIRA, Asana 𝗙𝗼𝗼𝗱 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝗮𝗽𝗽, 𝗢𝗻-𝗱𝗲𝗺𝗮𝗻𝗱 𝗔𝗽𝗽, 𝗛𝗼𝗺𝗲 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗮𝗽𝗽, 𝗛𝗮𝗻𝗱𝘆 𝗺𝗮𝗻 𝗮𝗽𝗽, 𝗦𝗮𝗹𝗼𝗻 𝗮𝗽𝗽, 𝗕𝗲𝗮𝘂𝘁𝘆 𝗮𝗽𝗽, 𝗧𝗮𝘅𝗶 𝗮𝗽𝗽, 𝗥𝗶𝗱𝗲 𝗮𝗽𝗽, 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗮𝗽𝗽, 𝗗𝗮𝘁𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗛𝗲𝗮𝗹𝘁𝗵 𝗮𝗻𝗱 𝗳𝗶𝘁𝗻𝗲𝘀𝘀 𝗮𝗽𝗽, 𝗧𝗿𝗮𝘃𝗲𝗹 𝗮𝗽𝗽, 𝗠𝘂𝘀𝗶𝗰 𝘀𝘁𝗿𝗲𝗮𝗺𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗩𝗶𝗱𝗲𝗼 𝘀𝘁𝗿𝗲𝗮𝗺𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗙𝗶𝗻𝘁𝗲𝗰𝗵 𝗮𝗽𝗽, 𝗦𝗵𝗼𝗽𝗽𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗧𝗲𝗹𝗲𝗺𝗲𝗱𝗶𝗰𝗶𝗻𝗲 𝗮𝗽𝗽, 𝗙𝗶𝗻𝗮𝗻𝗰𝗲 𝗔𝗽𝗽, 𝗥𝗲𝗮𝗹 𝗲𝘀𝘁𝗮𝘁𝗲 𝗮𝗽𝗽, 𝗦𝗼𝗰𝗶𝗮𝗹 𝗺𝗲𝗱𝗶𝗮 𝗮𝗽𝗽, 𝗖𝗵𝗮𝘁 𝗮𝗽𝗽, 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗮𝗽𝗽, 𝗠𝗲𝘀𝘀𝗮𝗴𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗢𝗻𝗹𝗶𝗻𝗲 𝗰𝗼𝘂𝗿𝘀𝗲𝘀 𝗮𝗽𝗽, 𝗢𝗻𝗹𝗶𝗻𝗲 𝗲𝗱𝘂𝗰𝗮𝘁𝗶𝗼𝗻 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗧𝘂𝘁𝗼𝗿 𝗮𝗽𝗽, 𝗛𝗼𝘁𝗲𝗹 𝗯𝗼𝗼𝗸𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗢𝗻𝗹𝗶𝗻𝗲 𝗴𝗿𝗼𝗰𝗲𝗿𝘆 𝗼𝗿𝗱𝗲𝗿 𝗮𝗽𝗽 📱DOMAIN EXPERTISE 🌿 On-Demand 🌿 Finance 🌿 Business Automation 🌿 Retail 🌿 Healthcare 🌿 B2B/B2B2B/B2C 🌿 Logistic/Shipping 🌿 Supply Chain 🌿 Real Estate 🌿 E-commerce 🌿 Artificial Intelligence 🌿 Machine Learning 🌿 Safety Hazards Management 🌿 Chatbot Development 🌿 Environment/ Forest 🌿 Insurance ☑️ WHY CHOOSE ME? ✔ 100% Job success history ✔ ⭐ 5.0-star expert Developer ✔ Meeting deadlines effectively ✔ Perfectionist, professional, and friendly ✔ Clean-technology lover, interested in cutting-edge technologies ✔ Flexible time availability I'm happy to jump on a call to discuss things further Press the Green Button to invite me!

Expert Flutter Developer | Scalable Apps, Clean Code, 6+ Years Experience I build high-performance, cross-platform apps that are fast, scalable, and pixel-perfect. With 6+ years in Flutter, I specialize in Dart, Riverpod/Bloc, Firebase, REST/Socket APIs, and Clean Architecture (DDD, TDD, SOLID). Skilled in advanced Flutter features like animations, platform channels & performance optimization, I’ve delivered solutions in IoT, AI/ML & real-time systems. From MVPs to enterprise apps, I handle the full Flutter lifecycle—turning ideas into polished products.

If you've ever hired a developer who disappeared mid-project, missed a deadline, or delivered something that looked nothing like what you discussed, you already know how expensive the wrong choice is. I'm Hassan. I've shipped production Flutter apps for iOS and Android across 5+ years and multiple industries, from first commit to App Store and Play Store approval. My 100% Job Success Score on Upwork isn't a lucky streak. It's the result of one habit: I treat your product like it's mine. What I've built: ➤ Cross-platform iOS & Android apps from a single Flutter codebase, used in production across e-commerce, HR tech, field operations, and social platforms. ➤ Firebase & Supabase backends, including Auth, Firestore, Realtime Database, Cloud Functions, and FCM, along with clean REST API integrations with third-party services. ➤ E-commerce and marketplace apps with Stripe and in-app purchase integration. Clients have gone live and processed real transactions from day one. ➤ Attendance, HR, and productivity tools with role-based access, offline sync, and real-world field use. ➤ Social and community apps with real-time chat, push notifications, and media handling. ➤ I've navigated App Store rejections, Firebase quota limits, and Play Store policy disputes and shipped anyway. I know the edge cases that cost less experienced developers weeks. How I work: ➤ Clean architecture from day one using BLOC, Provider, or Riverpod, so your codebase stays maintainable long after I'm done. ➤ 0–4 hour response time, 6 days a week. You will never wonder where I am. ➤ Plain English communication, honest timelines, and problems flagged early, never at the deadline. What clients say: ➤ "Hassan Zafar is an amazing person. Done the job successfully before time." — Upwork client ➤ "The project was completed efficiently and within the expected timeframe. He was responsive and available to provide clarification." — Upwork client If you have a project or even just an idea, send me an invite. I'll give you an honest scope and timeline assessment within a few hours, not a sales pitch.

Top Rated Flutter developer with a 100% Job Success Score and 40+ cross-platform apps shipped for startups, agencies, and enterprises across the US, India, and the Middle East. I build AI-powered mobile, web, and desktop apps from a single Flutter codebase, and take your product from idea to launch, including backend and deployment. If you have an existing app and want to add AI, chatbots, document/OCR processing, content generation, smart recommendations, that's exactly where I do my best work. What I build: ✓ Flutter apps for iOS, Android, tablet, web & desktop (one codebase) ✓ AI integration — OpenAI, Gemini, custom ML, MLKit/Textract OCR ✓ Backend-as-a-service — Firebase & Supabase (Auth, Firestore/Postgres, real-time, storage, push) ✓ Payment gateways — Stripe, Razorpay, PayPal, Apple Pay, Easebuzz, Juspay ✓ Real-time chat & notifications — Firebase, QuickBlox, GetStream ✓ Google Maps, live tracking, geofencing, polyline routing ✓ Clean architecture — BLoC, Provider, Riverpod, MVVM ✓ Backend & APIs — Node.js, REST, Dio/Retrofit ✓ CI/CD — GitHub Actions, Codemagic AI features I've shipped into real apps: ✓ In-app chatbots & assistants ✓ OCR + AI summarization (e.g., health-report extraction) ✓ AI content generation & smart recommendations ✓ Predictive analytics and decision automation ✓ Voice & image recognition Domains: healthcare, fitness, eCommerce, on-demand & delivery, and fintech/payments, plus IoT/vending and other complex integrations. Built with clean, scalable, maintainable code from day one. How I work: clear, proactive communication; architecture that scales from MVP to production; delivery measured by real business results, not just shipped code. If you want a Flutter partner who combines strong mobile architecture with practical AI and can own the whole build from idea to launch, let's talk. Availability: 30+ hrs/week · Fast, clear communication