Need a production-ready Flutter app or a scalable Node.js/NestJS backend? I’m a Top Rated developer with a 100% Job Success Score, $20K+ earned on Upwork, 20+ delivered applications, and extensive experience leading Flutter development teams across the Middle East and the US. I help startups and established businesses turn product ideas into reliable, scalable applications—from planning and architecture through development, deployment, and growth. Here’s how I can help: 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • Cross-platform iOS and Android applications • Flutter and Dart development • Clean architecture and scalable codebases • API, payment, notification, and real-time integrations • Performance optimization and bug fixing • App Store and Google Play deployment 𝗡𝗼𝗱𝗲.𝗷𝘀 & 𝗡𝗲𝘀𝘁𝗝𝗦 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 • Scalable REST API development • Authentication and role-based authorization • Payment gateway and third-party API integrations • Real-time systems, notifications, and WebSockets • Database and backend architecture • AWS, Firebase, and cloud integrations 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 & 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 Have an idea but aren’t sure where to begin? I can help you: • Select the right technology stack • Design a maintainable system architecture • Define an MVP and development roadmap • Identify technical risks before they become expensive • Plan realistic milestones, budgets, and releases 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 As a Flutter Team Lead, I can manage or support your development team through: • Architecture decisions and technical planning • Code reviews and engineering standards • Task breakdown and delivery management • Developer mentoring and problem-solving • Clear communication with technical and business stakeholders 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 • Top Rated with a 100% Job Success Score • $20K+ earned across 22 Upwork contracts • Nearly 1,000 hours completed on Upwork • 20+ production applications delivered • Experience with startups, enterprises, and software companies • Strong product, business, and engineering perspective • End-to-end ownership from idea to store deployment • Clear updates, realistic estimates, and long-term support Whether you need a Flutter application, a NestJS backend, technical consultation, or an experienced lead for your development team, send me your requirements and current project stage. I’ll help you determine the best next step.

🏆 TOP RATED | ⚡ 10+ Years in Mobile Development | 📱 20+ Shipped Apps | Flutter • Firebase • AI • Full Stack I build production-grade mobile apps for iOS and Android that real users rely on daily — from product discovery and architecture to development, scaling, and App Store / Google Play launch. I help startups and businesses build complex cross-platform products including: • Marketplace apps • Social / community platforms • Healthcare & fitness apps • Booking & scheduling systems • Logistics / fleet management tools • Real-time collaboration apps Over the last 10+ years, I’ve delivered 20+ mobile applications using Flutter, React Native, Swift, and Kotlin, with strong backend and system architecture expertise. 🚀 FLUTTER DEVELOPER (PRIMARY EXPERTISE) Flutter + Dart is my main stack for building fast, scalable cross-platform applications with native-quality UX. I specialize in: • Clean Architecture • Scalable codebases • 60 FPS performance optimization • Responsive UI/UX implementation • Pixel-perfect Figma-to-Flutter development • Bug fixing & app modernization I build production Flutter apps with: • Firebase Firestore • Firebase Authentication • Firebase Cloud Messaging • Firebase Storage • Offline persistence & sync • Role-based access control • Real-time updates I have strong experience with complex app logic such as: • Scheduling systems • Messaging & notifications • Engagement scoring • Reporting dashboards • PDF generation • XLSX export • Admin panels 📱 MOBILE APP DEVELOPMENT (iOS & Android) I develop both cross-platform and native applications using: • Flutter / Dart • React Native • Swift (iOS) • Kotlin (Android) I have shipped apps involving: • BLE connectivity • Geolocation / GPS tracking • Voice recording & audio workflows • Computer vision • Camera & image processing • AR features • Real-time communication (WebRTC) I can handle the full lifecycle: Architecture → Development → Testing → Deployment → Maintenance 🌐 FULL STACK & BACKEND Most serious mobile products need strong backend architecture. I build backend systems using: • Firebase • ASP.NET Core • Node.js • Laravel • Go Databases: • Firestore • PostgreSQL • MongoDB • Redis Backend expertise includes: • REST APIs • Webhooks • Third-party integrations • Real-time systems • Cloud functions • Admin dashboards 💳 PAYMENTS & SECURE INTEGRATIONS I have implemented: • Stripe • Stripe Connect • RevenueCat subscriptions • In-app purchases (iOS / Android) • Payment split flows • Identity verification integrations • Secure authentication systems 🤖 AI IN MOBILE APPS I stand out by integrating AI directly into mobile products. I work with: • OpenAI API • Gemini API • AI chat assistants • Speech-to-text • Recommendation systems • TensorFlow Lite • On-device ML inference • Computer vision pipelines I’ve built AI-powered features such as: • Smart chat assistants • AI content generation • Voice interfaces • Predictive analytics • Intelligent search & classification 🧠 CONSULTING / MVP PLANNING I also help before development starts. I provide: • Technical consultation • Architecture reviews • MVP definition • Product validation • Cost estimation • Technology selection (Flutter vs React Native vs Native) • Risk analysis for complex features Clients often hire me for 1–2 hour consultations before committing to full builds. ✅ WHAT YOU GET • Honest estimates • Clear communication • Clean scalable architecture • Production-ready code • Long-term reliability I focus on shipping apps that work, scale, and generate business value. — Volodymyr

🥇 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 & 𝐅𝐥𝐮𝐭𝐭𝐞𝐫𝐅𝐥𝐨𝐰 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 5+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 | 𝐂𝐫𝐨𝐬𝐬-𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐀𝐩𝐩 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 ✅ 1𝟓+ 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬 published on Google Play and App Store. ✅ 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 on Upwork ✅ 𝐅𝐚𝐬𝐭 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐎𝐧-𝐓𝐢𝐦𝐞 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲, 𝐂𝐥𝐞𝐚𝐧 𝐂𝐨𝐝𝐞 Are you a startup founder, product owner, or tech team looking to launch a high-quality mobile app — quickly and affordably? I help clients like you turn product ideas into launch-ready apps using 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 and 𝗙𝗹𝘂𝘁𝘁𝗲𝗿𝗙𝗹𝗼𝘄 — with clean architecture, fast delivery, and long-term scalability in mind. 🔧 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐁𝐮𝐢𝐥𝐝 𝐅𝐨𝐫 𝐘𝐨𝐮: 🏦 𝗙𝗶𝗻𝘁𝗲𝗰𝗵 𝗔𝗽𝗽𝘀 – Secure, scalable banking & investment platforms 🚀 𝗠𝗩𝗣𝘀 – Get your product to market fast with Flutter or FlutterFlow 📱 𝗦𝗼𝗰𝗶𝗮𝗹 & 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗔𝗽𝗽𝘀 – Modern UI, performance optimized 🔒 𝗛𝗜𝗣𝗔𝗔-𝗰𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝘁 𝗮𝗽𝗽𝘀 – For healthcare & telemedicine use cases 🌍 𝗠𝘂𝗹𝘁𝗶𝗹𝗶𝗻𝗴𝘂𝗮𝗹 & 𝗟𝗼𝗰𝗮𝘁𝗶𝗼𝗻-𝗯𝗮𝘀𝗲𝗱 𝗮𝗽𝗽𝘀 – GPS, maps, i18n ready 🛠 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 & 𝐒𝐤𝐢𝐥𝐥𝐬: 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 & 𝗗𝗮𝗿𝘁 – Fast cross-platform native development 𝗙𝗹𝘂𝘁𝘁𝗲𝗿𝗙𝗹𝗼𝘄 – Low-code builder with custom logic 𝗙𝗶𝗿𝗲𝗯𝗮𝘀𝗲 & 𝗦𝘂𝗽𝗮𝗯𝗮𝘀𝗲 – Real-time DB, Auth, Storage, Functions 𝗔𝗣𝗜 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 – Stripe, Twilio, Sendgrid, custom backends 𝗦𝘁𝗮𝘁𝗲 𝗺𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 – Riverpod, Bloc, Provider, GetX 𝗖𝗜/𝗖𝗗 & 𝘃𝗲𝗿𝘀𝗶𝗼𝗻 𝗰𝗼𝗻𝘁𝗿𝗼𝗹 – Git, GitHub Actions, Bitbucket ✅ 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐋𝐨𝐯𝐞 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐖𝐢𝐭𝐡 𝐌𝐞 Transparent communication & proactive updates 6+ years of experience in startups and global teams Focused on 𝗿𝗲𝗹𝗶𝗮𝗯𝗶𝗹𝗶𝘁𝘆, 𝘀𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆, and 𝗰𝗹𝗲𝗮𝗻 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 Long-term collaboration mindset — I grow with your product 📩 𝐋𝐞𝐭’𝐬 𝐭𝐚𝐥𝐤! Whether you're starting an MVP or scaling your app, I’m here to help you build fast and smart with Flutter..

⭐ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 | 𝟖,𝟕𝟎𝟎+ 𝐇𝐨𝐮𝐫𝐬 | $𝟐𝟎𝟎𝐊+ 𝐄𝐚𝐫𝐧𝐞𝐝 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 I’m a Senior Flutter Developer, React Native Developer, and FlutterFlow Developer with 8+ years of experience building high-performance iOS and Android mobile applications. With 8,700+ Upwork hours, 24+ production apps shipped, and $200K+ earned, I help startups and growing businesses design, develop, launch, and scale reliable mobile products. I specialize in Flutter app development, FlutterFlow development, React Native app development, Swift development, and cross-platform mobile applications using Firebase, Supabase, REST APIs, AI integrations, payment gateways, push notifications, offline-first architecture, App Store Connect, and Google Play Console. I also maintain, modernize, and enhance existing Flutter, FlutterFlow, React Native, Swift, and .NET MAUI applications, improving performance, scalability, and user experience. 🚀 𝐈 𝐖𝐎𝐑𝐊 𝐁𝐄𝐒𝐓 𝐖𝐈𝐓𝐇 → Startups building Flutter, FlutterFlow, React Native, or Swift MVPs → Businesses launching new iOS & Android mobile apps → Product teams scaling an existing app with new features and integrations → Startups needing a reliable long-term mobile partner not a one-off contractor → Teams migrating legacy apps to modern Flutter or React Native ✅ 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐆𝐄𝐓 𝐖𝐇𝐄𝐍 𝐖𝐄 𝐖𝐎𝐑𝐊 𝐓𝐎𝐆𝐄𝐓𝐇𝐄𝐑 → Clear Planning - I review your app, users, and goals before any code is written → Production-Ready Code - Clean architecture that scales as your app grows → Flutter & React Native best practices → Predictable Delivery - Realistic timelines, weekly updates, early risk flags → Full Release Support - App Store Connect, Google Play Console, review handling → Ongoing Partnership - Feature updates, performance tuning, and bug fixes after launch 📊 𝐑𝐄𝐂𝐄𝐍𝐓 𝐑𝐄𝐒𝐔𝐋𝐓𝐒 • Delivered 24+ production Flutter, FlutterFlow & React Native applications • Built and shipped production Flutter and react native apps with Firebase, REST APIs, push notifications, CI/CD • Built mobile apps for fintech, healthcare, logistics, e-commerce, and SaaS startups. • Built AI-powered mobile applications using OpenAI, Claude, OCR, document processing, and conversational AI integrations. • Reduced crash rates up to 40% and improved app speed 25-50% on live apps • Published and maintained production apps on both Apple App Store and Google Play Store • Took startup MVPs from zero to App Store launch in 6-10 weeks • Long-term retainer work with multiple clients (1,500+ hour engagements) • Built complex Flutter applications with BLoC, Riverpod, Firebase, offline sync, and custom native integrations 🛠 𝐂𝐎𝐑𝐄 𝐒𝐓𝐀𝐂𝐊 Mobile: Flutter, Dart, React Native, Swift, SwiftUI, Kotlin, .NET MAUI, Backend: Firebase (Auth, Firestore, Functions), REST APIs, Supabase, MQTT Architecture: Clean Architecture, BLoC, Riverpod, Provider, Redux, offline-first synchronization Delivery: CI/CD, App Store Connect, Google Play Console, Expo, custom native modules 📱 APP TYPES BUILT • Fintech & Payments • Healthcare & Telemedicine • Logistics & Delivery • Inventory & Sales Management • SaaS Platforms • Social & Community Apps • Internal Enterprise Applications 💬 𝐇𝐎𝐖 𝐖𝐄 𝐒𝐓𝐀𝐑𝐓 Whether you need a Flutter Developer, FlutterFlow Developer, React Native Developer, or an experienced Mobile App Developer to build a new application, improve an existing product, or provide long-term support, I’d love to help. Send me your project details, and I’ll provide practical recommendations, a realistic development plan, and clear next steps to help bring your app to market successfully. KEYWORDS Flutter • React Native • FlutterFlow • Swift • Firebase • Supabase • REST APIs • GraphQL • TypeScript • Payment Gateway • Push Notifications • Maps • AI Integration

Mobile apps don't fail because of missing features. They fail because of bad architecture, compliance gaps, and developers who disappear after handoff. 𝐎𝐯𝐞𝐫 𝐭𝐡𝐞 𝐩𝐚𝐬𝐭 𝟖 𝐲𝐞𝐚𝐫𝐬, I've built and shipped 𝟏𝟓+ 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐚𝐩𝐩𝐬 across Flutter, React Native, Swift, and Kotlin, including a payment SDK deployed to 𝟏𝟎𝟎+ 𝐉𝐏𝐌𝐨𝐫𝐠𝐚𝐧 𝐦𝐞𝐫𝐜𝐡𝐚𝐧𝐭𝐬, a healthcare communication app that grew 𝟑𝟎𝟎% in 𝐀𝐩𝐩 𝐒𝐭𝐨𝐫𝐞 𝐫𝐞𝐯𝐞𝐧𝐮𝐞, a Flutter music player app with 𝟏,𝟎𝟎𝟎,𝟎𝟎𝟎+ 𝐝𝐨𝐰𝐧𝐥𝐨𝐚𝐝𝐬, and an AI-powered sports rule app that added $𝟏𝟒𝟎𝐊+ 𝐢𝐧 𝐀𝐑𝐑 through native paywalls. These weren't projects where I wrote code to spec. Each one required owning technical decisions, navigating App Store policy, designing architecture that could scale, and integrating systems that had no simple documentation - Twilio VOIP, BLE firmware OTA, PCI-DSS payment flows, NDIS compliance workflows, RAG pipelines on top of LLMs. 𝐎𝐧 𝐭𝐡𝐞 𝐀𝐈 𝐬𝐢𝐝𝐞, I've built production 𝐑𝐀𝐆 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐮𝐬𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐂𝐡𝐚𝐢𝐧 𝐚𝐧𝐝 𝐏𝐢𝐧𝐞𝐜𝐨𝐧𝐞, 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞𝐝 𝐎𝐩𝐞𝐧𝐀𝐈 𝐀𝐏𝐈𝐬 𝐢𝐧𝐭𝐨 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬 for real-time task detection and natural language search, and shipped an LLM-powered rules engine that became a commercial product. This isn't experimentation - it's shipped and monetized. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈'𝐯𝐞 𝐬𝐡𝐢𝐩𝐩𝐞𝐝 𝐢𝐧: • Healthcare • FinTech • Sports • Workforce management • IoT • Media • Disability services. 𝐌𝐲 𝐓𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤: Flutter, React Native, Swift, Kotlin, Node.js, TypeScript, Firebase, Firestore, AWS, OpenAI APIs, RAG, LangChain, Pinecone, Twilio, RevenueCat, Superwall, Adapty, BLE, REST, GraphQL, and payment integrations across Stripe, NMI, Square, PayPal, and SEPA. If you're building something that has to work - App Store approval, compliance requirements, payment flows, AI features, or a migration that can't break production, that's where I do my clearest work. 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤. 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞. Available for a scoping call to see if there's a fit.

Expert Flutter & Mobile App Developer | Dart | iOS & Android | Firebase | REST API | API Integration Hi there! I’m a passionate Mobile App Developer with 5+ years of experience specializing in building high-performance, user-friendly, and visually appealing apps using Flutter and Dart. ✅ What I Do Best: - Cross-Platform Mobile Apps (iOS & Android) with Flutter - Firebase Integration (Auth, Firestore, Cloud Functions, Push Notifications) - REST API Development & Integration - Backend : Node JS, Django (Python), Laravel - UI/UX Implementation from Figma/Wireframes - State Management (Provider, Bloc, Riverpod) - App Deployment (Play Store & App Store) - Real-time Features (Chat, Video/Audio, Live Updates) - Payment Gateway Integration (Stripe, Razorpay, PayPal) 𝐃𝐨𝐦𝐚𝐢𝐧 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ◉ Dating App & Matchmaking App ◉ Grocery App ,Ordering Apps & Delivery App ◉ Food Delivery Apps& Restaurant App ◉ On-Demand Technician Service Apps ◉ Taxi & Ride-Hailing Apps ◉ Home Services & On-Demand App ◉ Event Planning & Booking Apps ◉ Service Provider Mobile Apps ◉ Bakery, Café & Restaurant Management Apps ◉ Chat, Messaging & Communication Apps ◉ Social Networking & Community Apps ◉ Health, Fitness & Wellness Apps ◉ Real Estate & Property Apps ◉ Salon Booking App & Beauty Service App ⚡ I ensure clean code, scalable architecture, and smooth performance for all projects. Whether it’s an MVP, E-commerce app, Social Media app, or Custom solution, I can bring your vision to life. Let’s build something amazing together!

🎖️ Top Rated Plus (Top 1% of talent). ------------------------------------------------- Tired of unreliable mobile app developers? I help businesses like yours build high-performance, visually stunning iOS and Android apps with Flutter. With 5+ years of experience, I specialize in turning your app ideas into reality, focusing on scalability, user engagement, and pixel-perfect design. ⭐️ 5+ production-grade apps deployed to both AppStore & Playstore. 🥇 100% Job Sucess Score. 👨🏻‍💻 7+ years experience as a software developer. 🎓 CS Grad. 💻 Flutter, Dart, Java & Golang Here's how I can help you: 💨 Rapid Development: Leverage the power of Flutter for fast iteration and cross-platform compatibility. 👍 Seamless Integration: I expertly integrate APIs, databases (Firebase, SQLite, etc.), and third-party services. 💻 Engaging User Experiences: I prioritize intuitive UI/UX design to keep your users coming back. I've delivered successful apps like Borne, FiatMatch (processed over 500+ transactions) and worked on several projects spanning various industries. Ready to build your dream app? Let's chat! 💬

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.

About Me I have 25+ years of experience in partial CTO, CEO, Mobile App Development Project Management, specializing in Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, React Native, Redux Flutter, Firebase, Mongo Db, User Authentication, EHR, FHIR, HL7, HIPAA compliance, Typescripts, and AI-driven applications. My expertise spans iOS & Android development, AI-powered solutions, seamless authentication systems, and full-stack capabilities, ensuring modern, high-performance apps for businesses of all sizes. Our Agency Since July 2017, my wife, our talented 55+ team members, and I have been delivering world-class digital solutions. - 150+ apps successfully delivered across multiple platforms in the last year - $4M+ turnover on Upwork - 500+ successful projects, 15,000+ hours worked - Close to a 100% success rate - Worked with 7, 8, and 9-figure businesses Our Expertise Mobile App Development • Android, iOS, & Cross-Platform Apps (Java, Kotlin, Swift, Objective C, React Native, Flutter) Web & Full Stack Development • Front-End: React.js, Angular.js, Next.js, WebRTC • Back-End: Node.js, Firebase, MongoDB, PostgreSQL • Cloud Deployment & API Integrations E-commerce & CMS Development • Shopify Developer & Customization • WordPress Developer & WooCommerce Solutions UI/UX Design & Branding • Adobe XD, Figma, Photoshop, Sketch Digital Growth & Security • SEO & Digital Marketing Optimization • Data Security & Intellectual Property Protection Intellectual Property Services • Trademark & Copyright Assistance Why Choose SolidAppMaker? - Tailored Approach: Every project is customized to fit your needs and budget. - Agile Workflow: Regular updates, milestones, and transparent communication. - High-Quality Development: Rigorous testing & performance optimization. - Competitive Pricing: Top-tier services at fair and transparent pricing. - Proven Track Record: Experience with MVPs, SaaS platforms, AI-driven apps, and enterprise solutions. Why SolidAppMaker Stands Out - 8+ years of expertise in UI/UX, mobile apps, SaaS & web development - 510+ projects successfully completed for startups & enterprises - 10+ awards & recognitions, featured on Upwork & top design platforms - 50+ countries served, delivering top-tier prototyping & development solutions Proven Results: - SaaS UI/UX enhancements boosted retention by 60% - Mobile UI redesigns reduced churn by 40% - Web App UX improvements increased task completion by 90% - eCommerce UI revamps increased sales by 70% Industries We Cover Healthcare, Transport, Retail, Asset Management, Real Estate, Dating, Nature/Wildlife, Rental, Food Delivery, Fintech / Finance and Banking, Cryptocurrency, Entertainment, Hospitality, Logistics, Manufacturing, Media and Publishing, Non-Profit, Sports and Fitness, Travel and Tourism, Utilities, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Business Innovations, Ecology, Human Resources, LegalTech, Lifestyle, Fashion, Marketing, Navigation, Education, E-learning. Highlighted Skills Project Planning, MVC Architecture and RESTful APIs, Front-end Technologies (React.js, HTML5, CSS3, JavaScript), Responsive and Mobile-first Design, Database Design and Implementation (MongoDB, Firebase), User Authentication, Integration of Third-party APIs, Deployment to Cloud Platforms (AWS), Test-driven Development, Agile Methodologies (Scrum, Kanban), Security Technologies, QR Code Scanner, GPS and Mapping, Blockchain and NFT, ChatGPT and Artificial Intelligence. Flutter Developer 10+ years of experience As a Mobile App Developer and Full Stack Developer with deep expertise in SaaS Mobile App, ReactNative App I bring over a decade of experience in building high-performance cross-platform mobile application. As a talented Flutter Developer with good knowledge of cross-platform development, I specialize in crafting high-performance mobile apps for both iOS and Android platforms. I made more than 400 apps using Flutter. Flutter is my main tech stack, I helped dozens clients making top-performing apps using Flutter. I am a dedicated mobile app developer with extensive experience building cross-platform apps in Flutter, React Native, and Expo. As a full stack developer, I combine clean front-end design with robust back-end systems using Laravel, Node.js, or Firebase to deliver high-performance mobile solutions. FlutterDeveloper MobileApp AndroidDevelopment IOSDeveloper. Next Steps – Let’s Build Something Amazing! 📅 Would you be available for a 30-60 minute free consultation? During this meeting, we will: - Go over your project goals, technical needs, and budget. - Provide a project plan with a timeline and cost estimate. - Discuss the best development approach to fit your vision. 📩 Send me a message, and I’ll share the Upwork scheduler link so we can set up a time that works best for you. Looking forward to collaborating and creating something extraordinary! Best regards, John H Fijen

Flutter Developer specializing in mobile app development using Flutter Dart and Flutter Firebase to build high-performance iOS and Android applications. I focus on developing scalable, production-ready mobile apps with clean architecture, optimized Firestore databases, and secure backend systems powered by Firebase. I also work as an AI App Developer, helping integrate intelligent features into modern mobile applications. ----Mobile App Development Services---- End-to-end mobile app development using Flutter Flutter Firebase backend development and optimization Firestore database architecture and structuring AI-powered app features and integrations Admin panels and dashboards Third-party API integrations Payment integrations including Stripe and in-app purchases App Store and Google Play deployment ----Core Expertise---- Flutter Developer for cross-platform apps (iOS and Android) Flutter Dart development with clean and maintainable code Scalable mobile app architecture design State management using Provider, Riverpod, and Bloc REST API integration and backend connectivity Performance optimization and app scalability ----Flutter Firebase Backend---- Firebase Authentication (Email, Google, Apple, Phone) Cloud Firestore database design and optimization Firebase Cloud Functions for backend logic Firebase Cloud Messaging (push notifications) Firebase Storage management Security rules and role-based access control Real-time data synchronization As a Flutter Developer and AI App Developer, I build complete mobile app solutions using Flutter, Dart, and Firebase, ensuring performance, scalability, and long-term reliability. If you are looking for Flutter Firebase expertise for your mobile app development project, feel free to send an invitation.