Most Flutter developers build generic apps. I focus on the hard stuff — health data platforms, Bluetooth LE & wearable integration, real-time WebRTC video, and AI-powered mobile features. Top Rated Plus on Upwork with 100% Job Success. If you're building a mobile product that has to work — real-time vitals from a BLE wearable, an AI assistant inside your app, or video calls that don't drop on weak networks — that's exactly the kind of problem I solve. I've spent 8+ years building mobile apps, starting as an Android native developer and moving into Flutter, which means I understand what's happening under the hood — not just the framework, but the platform beneath it. That foundation is why my apps stay fast, stable, and battery-friendly even in tough conditions. ⭐ Why clients work with me: Flutter apps that stay smooth even on low-end devices and poor internet connections Deep experience in the niches most developers avoid: medical/health data, Bluetooth LE & IoT device communication, WebRTC real-time video, and AI integration Clear weekly milestones and transparent progress, so you always know where your project stands Senior-level communication — I ask the right questions early and flag risks before they become problems Production mindset: clean architecture, proper state management, and code your next developer can actually maintain 🩺 Recent work: HealthGauge — BLE wearable integration with real-time vitals tracking and interactive health data visualizations (iOS + Android) AI-powered contact-center app on AWS that automates customer support workflows A senior-friendly video calling app with auto-answer, built to stay reliable on slow connections for elderly users Live solar-telemetry app integrating real-time IoT data for a German solar manufacturer Secure WebRTC video + audio calling app with in-call messaging across iOS, Android, and desktop 🛠️ Technical stack: Mobile: 8+ years building mobile apps — Android native (Java/Kotlin) → Flutter & Dart, iOS (Swift/Objective-C) AI: LLM integration via OpenAI & Claude APIs — in-app AI chat, smart/contextual responses, data-driven insights, and Firebase Generative AI State management: BLoC (preferred), Riverpod, GetX, Provider Backend: Firebase (Authentication, Firestore, Cloud Functions, Push Notifications/FCM, Analytics, Performance), Supabase, Node.js, REST & GraphQL APIs Cloud & real-time: AWS (Chime SDK, Lambda), WebRTC, push notifications, live chat IoT & hardware: Bluetooth Low Energy (BLE), ESP32, NRF, NFC, smartwatch SDKs, wearable device integrations Databases & local storage: Firestore, SQLite, Hive Payments: Stripe, PayPal, Razorpay Maps & location: Google Maps, Mapbox, Flutter Map Tooling: GitHub, Jira, Trello, CI/CD, Agile workflows 📦 30+ apps delivered across HealthTech & health monitoring, AI-powered apps, real-time communication (chat & video calls), fitness & sports, logistics & delivery, service-provider platforms, and fintech. How I work: We start by understanding your vision, users, and business goals — not just the feature list. I break the project into weekly milestones so progress is visible and predictable, share regular updates, and keep the codebase clean and documented throughout. When you build with me, you work directly with the engineer writing your code — no account managers, no hand-offs, no telephone game. You get honest technical advice, realistic timelines, and an app built to scale as your business grows. Whether you have a detailed spec, a rough Figma design, or just an idea on paper, I can help you turn it into a production-ready iOS and Android app from a single Flutter codebase — and I'm equally comfortable taking over and improving an existing Flutter project, fixing bugs, or refactoring messy code. 📩 Send me a message with your idea and I'll reply with honest, specific feedback on how I'd approach it — including the tech stack, timeline, and any risks I'd watch out for. Flutter | Dart | AI Integration | LLM | OpenAI | Bluetooth LE | IoT | WebRTC | HealthTech | Wearable App | Firebase | AWS | iOS | Android | Cross-Platform Mobile App Development | Real-Time Video

🔥 Top rated in Upwork | Top 10% ✅ 4+ Years of Flutter Experience ✅ 100% client satisfaction ✅ High-Quality Work ✅ In Your Budget ✅ Fluent English 🔥 Fast Response ✅ Long-term working relationship Hi ! I'm Abdullah Nasir, I'm a Software Engineer graduate working as a professional Flutter Developer with more than 4 years of experience. I've developed many projects single handedly as well as collaborated with teams in my previous roles with different companies, I've worked collaboratively with multiple teams of developers and designers to ensure seamless app development from start to finish. I have experience in implementing • Various third-party libraries • AI & LLM Integrations ( OpenAI, Gemini, Claude) • Firebase & REST APIs Integrations • Authentication using Web tokens, Auth0 & Firebase. • GetX, BloC, Provider & Stacked Pattern • Push notifications • Payment gateways. • Google Maps integration • Mapbox Maps integration My technical skills include • Flutter framework • Proficient in Dart programming language • Creating user-friendly appealing designs • Firebase • Git. • Strong problem solving • Troubleshooting and debugging code. I am passionate about staying up-to-date with the latest technologies and trends in mobile app development and strive to continuously improve my skills.

Hi, I am Usman Ahmed, a Software Engineer with a interest in developing robust web & mobile applications. I have been working as a developer for 3+ years working both on the backend and frontend. I have successfully implemented robust backend systems in NodeJS/NestJS which comprised of user authentication & authorization for both local JWT strategy and social sign-in methods , implementing REST and GraphQL APIs and then consuming those APIs on the frontend using React/NextJS & Flutter. I have had the opportunity to work in the backend on a micro-services architecture where I used RabbitMQ for micro-services communication & Kafka for implementing realtime data streaming features. In regards to devops, I have used EC2 to deploy backend instances on AWS, used S3 for file/image storage and AWS Simple Email Service(SES) for sending email notifications to users. On the frontend I have experience in developing both web & mobile applications using React/NextJS for web & Flutter for mobile. On the web I have had the opportunity to consume the backend APIs and implement authentication system, incorporate JWT functionality, manage state using Redux, use hooks like useState, useEffect etc, build custom hooks and using tailwind css for styling the web UI. On the mobile side I have worked with Flutter on building responsive UI that work on both Android and iOS devices and also publish an app on both App Store Connect & Google Play Console.

Flutter app crashing? Need new features, Firebase integration, or help getting your app published? I can help. I build, fix, and improve Flutter applications with a focus on clean architecture, performance, and long-term maintainability. Whether you’re starting a new project or improving an existing app, I deliver reliable solutions that are ready for production. What I can help with: • Build Flutter applications from scratch • Fix bugs, crashes, and performance issues • Integrate Firebase Authentication, Firestore, Cloud Messaging, and other Firebase services • Connect REST APIs and third-party SDKs • Improve UI, responsiveness, and application performance • Resolve Google Play Store submission and policy issues • Maintain, refactor, and extend existing Flutter applications I prioritize clean, maintainable code, clear communication, and delivering dependable software that helps clients launch and grow their products.

Trusted by 120+ Clients Worldwide | Completed 200+ Projects. Available for Fixed priced projects. Some quick information: - No bad review | Not even a single one - Top rated on Upwork - Level 2 on Fiverr | 160+ ratings - Expertise in UI UX - Cross platform developer (Android, iOS, Web) Hi, I’m Saleheen, a Senior Flutter Developer from Bangladesh. You can check out the reviews, and I guarantee you won't find one single bad review about me. It's been almost five years since I started working with Flutter, and the journey has been amazing. Over this journey, I have had the chance to work with countless clients worldwide and create amazing apps, including:
 * Medical & Healthcare * E-commerce * Real Estate * Education * Chat & Social * Crowdfunding * Multivendor Platforms * Religious / Islamic Apps * AI-driven Apps. * And many more If you’d like to collaborate, discuss a project, or do a 1-on-1 call, feel free to reach out. I respond quickly and am always open to meaningful conversations. I like long-term commitments with clients, so I don’t leave them unsatisfied 🙂 Looking for some cool clients to work with.

A talented Mobile (Android Native) (Hybrid Flutter) Developer here who is developing apps for the last 5 years. I've developed some apps with great User Interface and functionality, following best programming patterns and practices. I develop applications on Android using both java and kotlin programming language, while using dart to build Flutter applications Command on other technologies include : - MVVM - Graph QL - gRPC - REST - Firebase - In-app purchases - Revenue Cat - 0 Auth - Push Notifications - Code Magic - AWS Amplify - Upload Apps on Stores - GetIt - Provider - Bloc - Stacked

Hello! I am 𝗠𝘂𝗵𝗮𝗺𝗺𝗮𝗱 𝗥𝗮𝘀𝗵𝗶𝗱, a full-stack developer with expertise in Flutter, Node.js, React, and AI integration. I specialize in building mobile apps, web apps, and AI-powered solutions, taking projects from idea to launch with a focus on quality, scalability, and modern design. 𝗠𝘆 𝘀𝗸𝗶𝗹𝗹𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: Front-End: - Flutter (Android & iOS) - React / React.js web apps - Clean, modern UI/UX design - Responsive design for mobile & web Back-End: - Node.js & Express.js - REST API development & integration - Firebase (Auth, Database, Push Notifications) - Database management (MongoDB, MySQL) - Payment gateway integration AI Integration: - Chatbots & virtual assistants - Recommendation systems - Process automation features 𝗪𝗵𝘆 𝗵𝗶𝗿𝗲 𝗺𝗲? - Fast, reliable, and high-quality delivery - Clear and consistent communication - Ability to handle projects end-to-end (design → development → deployment) 𝗜 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱: - Mobile apps (social, e-commerce, booking, health, education, etc.) - Web apps & dashboards - Full-stack solutions with smooth performance Before you decide, I’d be happy to offer you a free consultation or interview call. You can share your project goals, ask questions, and see if I’m the right fit for your needs. This way, you get clarity before starting, and I can guide you in the right direction to ensure you hire the best freelancer for your project. Regards, Muhammad Rashid

Full-Stack Flutter Developer | 4+ Years | 35+ Production Apps I build high-performance, scalable Flutter apps for iOS, Android, web, and desktop, with seamless backend integration (Firebase, Supabase, Node.js, REST APIs). Fast, reliable, and ready for production. 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 - Cross-Platform Development: Flutter for mobile, web, and desktop - Backend & Database Integration: Firebase (Firestore, Auth, FCM), Supabase, REST APIs, SQLite - Architecture & Code Quality: MVVM, clean code, modular structure, advanced state management - Key Features Built: Push notifications, deep linking, in-app messaging, localization, AI-driven features (chatbots, image editing) - Tools & Workflow: Git, Android Studio, VS Code, Figma, Postman 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 Efficient 5-Stage Development: - Understand your needs & define requirements - Prototype UI/UX in Figma or Adobe XD - Develop maintainable, scalable Flutter code with backend integration - Deliver a functional version—gather feedback, iterate - Polish final version and support go-live 𝗣𝗿𝗼𝘃𝗲𝗻 𝗧𝗿𝗮𝗰𝗸 𝗥𝗲𝗰𝗼𝗿𝗱: Real-time chat apps, AI tools, food delivery, marketplaces, e-commerce, health & fitness, travel, taxi, telemedicine, financial and real estate apps, social media platforms, wellness and educational tools 𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲, 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗠𝗶𝗻𝗱𝘀𝗲𝘁: Comfortable building from scratch, integrating new features, fixing bugs, and optimizing existing Flutter apps Target clients ranging from startups and SaaS businesses to digital agencies and real estate platforms Let's Build Your Next App Want to launch your app fast, with elegant code and user-first design? Click “Invite to Job” and let’s bring your vision to life—built for scale, performance, and success. 𝗪𝗵𝗮𝘁’𝘀 𝗶𝗺𝗽𝗿𝗼𝘃𝗲𝗱? - Strong, focused title with key details for better discoverability - Summary that immediately conveys experience and scope of work - Organized bullet points for quick scanning of technical strengths - Process and offerings aligned to client needs—clear why and how you work - Call to action that’s concise and demeanor-friendly Let me know if you’d like a more concise version for quick profile scanning or a slightly more detailed one for in-depth browsing!

Senior Software Engineer with an M.Sc. in Computer Science and 12+ years of professional experience delivering reliable, high-quality software solutions. I specialize in PHP, Java, Android, Flutter, HTML5, CSS, web development, MySQL, Oracle, and REST/SOAP web services. I have strong expertise in building responsive, clean, and user-friendly websites using modern HTML5 and CSS practices. I focus on writing efficient, maintainable code and ensuring projects are delivered accurately, on time, and to client expectations. Let’s discuss your project and turn your requirements into a successful solution.

I build AI-powered mobile apps and automation workflows for founders who need to ship fast. Most of my recent work is helping non-technical founders and small teams turn an AI idea into a working product — chatbots, AI assistants, n8n automations, OpenAI/Claude integrations, and Flutter mobile apps with intelligent features baked in. What I've built recently: • OpenClaw integrations — multiple active projects covering setup, memory configuration, browser integration, and Mac automation in Shell/Node.js. Recent client: "strong knowledge on AI and technical problem solving." • Mentot — WhatsApp chatbot for virtual assistance, deployed end-to-end • Tailor AI — AI fashion recommendation app built in Flutter • n8n automations connecting AI models to real business workflows • Flutter + Firebase apps with real-time data and clean architecture How I work: • Clear scope before we start — no surprise hours • Daily updates if the project runs more than a week • Comfortable jumping on a Zoom call to align (book one below for $20) • I work US-friendly hours when projects need it I'm associated with TATOS Technologies, a Kerala-based product team that ships AI MVPs in 2-week sprints. For larger projects ($10K+) I can bring in design, backend, and QA support from the team. For smaller scoped work, you get me directly.