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I am an expert Mobile developer and FullStack programmer. I have experience working on Flutter or Appcelerator Studio to create application also for Android and iOs and create Backend infrastructure with different platforms and languages such as PHP, GoLang, Coldfusion using or not relative frameworks to dialogue with Sql Database or Firebase Database

Flutter & iOS developer with 7+ years shipping mobile apps across AI, fintech, social, and insurance — from solo MVP builds to production apps handling real user data. ⭐ 100% Job Success Score on Upwork · 25+ five-star reviews If you're starting a Flutter app from scratch, I take it from idea to the App Store and Play Store. If your app has an AI feature that needs to actually work — not just look good in a demo — that's usually where I come in. If a previous developer left you with something that needs an honest audit, I've been brought in for exactly that too. 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝗴𝗲𝘁 ✔️ One Flutter codebase shipped to iOS and Android at once — 80% faster than building two native apps separately. ✔️ Real AI integration: Claude/OpenAI API, prompt engineering, LLM fine-tuning — not a demo wrapper. ✔️ 4+ years of native iOS (Swift/SwiftUI) depth underneath the Flutter work, so I catch platform-specific issues Flutter-only developers tend to miss. ✔️ Hired specifically to audit and rebuild apps other developers left broken — 15+ rescue projects completed. ✔️ Apps shipped across AI, fintech, social, and insurance — there's a good chance I've already solved a version of your problem. Send me what you're building and I'll reply with a scope estimate and the first technical decision I'd settle. 𝗥𝗲𝗮𝗱𝘆 𝘄𝗵𝗲𝗻 𝘆𝗼𝘂 𝗮𝗿𝗲 👉 Click Message or Hire above to get started. Best, Danial ————— 𝗦𝗲𝗹𝗲𝗰𝘁𝗲𝗱 𝘄𝗼𝗿𝗸 𝗮𝗻𝗱 𝘀𝗸𝗶𝗹𝗹𝘀: 𝗔𝗜 𝗔𝗣𝗣 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 - AI Face-Swap App Developer, FakeMe: Flutter + Firebase app for AI face-swap images and video, with live Firestore sync, AdMob/Unity ad monetization, and in-app token purchases — 600,000 installs. - AI Video Generation App Developer, Gimi AI: built and shipped an AI video-generation app in Flutter, live on the App Store and Google Play — 50,000 installs. - Claude API Developer, AI app maintenance contract: prompt engineering and LLM fine-tuning on a production Claude API + Flutter app, plus a Firebase-backed reporting dashboard — 150 hours delivered, client called the work "exactly what I needed." - AI Insights App Developer, Decide Fast & Head Fast: built a Claude AI-powered app using prompt engineering to turn user input into pattern-interrupting insights. 𝗙𝗜𝗡𝗧𝗘𝗖𝗛 - FlutterFlow Developer, investment app: full-stack Firebase + FlutterFlow build for an investment platform — client called the delivery "efficient" with "outstanding quality." - Flutter Developer, Midaz crypto wallet: trading app letting users invest in global stocks and withdraw holdings as crypto, built in FlutterFlow. 𝗦𝗢𝗖𝗜𝗔𝗟 & 𝗗𝗔𝗧𝗜𝗡𝗚 - Flutter Developer, Naseeb: Muslim marriage app with native real-time voice and video calling. - iOS Developer, Cl:K: private social app with stories, VIP/regular visibility spaces, live messaging, and an in-app gifting economy. - iOS Developer, Ecstasia: location-based live video and voice call app over secure P2P connections. - iOS Social Media App Developer: built with Swift, Firebase, REST API, and Socket IO on AWS with a MySQL backend — client credited the app's App Store approval directly to this work. 𝗜𝗡𝗦𝗨𝗥𝗧𝗘𝗖𝗛 - Flutter Developer, Ceertif: live insurance company app shipped to both app stores. 𝗔𝗣𝗣 𝗔𝗨𝗗𝗜𝗧𝗦 & 𝗥𝗘𝗦𝗖𝗨𝗘𝗦 - App Audit Developer, Hordr app: client called the audit "thorough and timely," leading to an ongoing rebuild engagement. - iOS Mobile UI Developer: complex iOS build with Firebase Realtime Database, maps integration, and push notifications — client praised on-time delivery of a "fairly complex" project. 𝗡𝗔𝗧𝗜𝗩𝗘 𝗶𝗢𝗦 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 - iOS Swift Developer: 20+ native iOS apps shipped, including full redesigns in Xcode and feature-parity rebuilds. - Swift Developer, Muscle Hug / Muscle Hog: SDK updates and Play Store resubmission across two release cycles. - Swift Developer: implemented push notification handling for an iPad-only Swift application. - SwiftUI Developer, machine learning application: built the UI layer for a SwiftUI-based ML app. 𝗚𝗔𝗠𝗜𝗡𝗚 - iOS Developer, Checkmate: chess app with the Stockfish engine integrated for full gameplay analysis. 𝗙𝗟𝗨𝗧𝗧𝗘𝗥 & 𝗖𝗥𝗢𝗦𝗦-𝗣𝗟𝗔𝗧𝗙𝗢𝗥𝗠 - Flutter Developer, Lillypad: Flutter app with a native bridge, including replacing SFSafariViewController with WKWebView for smoother in-app browsing. - Flutter Developer, Sustomer (Eco-check): shared, gamified sustainable shopping list app with offline-first support and deep-linked invites. - Flutter Developer: additional builds including Pata-parking, a protein calculator app, and Nanshe. - Full-Stack Developer, ItaPizza: Flutter front end with React, Angular, and ASP NET Core across the stack. 𝗦𝗞𝗜𝗟𝗟𝗦: Flutter, Dart, Swift, SwiftUI, Android, Kotlin, Firebase, Claude API, OpenAI API, Prompt Engineering, FlutterFlow, REST API Integration, Socket IO, AWS, MySQL, Push Notifications, App Store Deployment

Presentazione personale: matteocalva.dev Principali: Flutter, Dart, SQL, VB.Net, VB6, VBA, ASP.Net, JavaScript, Java, Swift, C#, Html, CSS, Android, Ios Database: Microsoft SQL Server, MySQL, Firebase, Microsoft Access, MongoDB. Grafica: Figma, Canva, InDesign, Illustrator. Altro: VSCode, Visual Studio, GithHub, SVN, Inno Setup, Wise Setup, Facebook Manager, Linkedin Manager, Mailchimp, Wix, Wordpress, Pacchetto Office, Suite Google, Amazon AWS (S3, EC2), MetaMask.

8 years of commercial experience across logistics, field operations, IoT, health and fitness, e-commerce, and education. - Full-cycle mobile application development from architecture to release - Strong OOP fundamentals, design patterns, and clean, maintainable code - Analytical, detail-oriented approach with a focus on practical delivery - Self-driven and comfortable working independently or as part of a team - Comfortable using modern AI coding assistants such as Codex, Claude, and Gemini for research, implementation, troubleshooting, and technical documentation Core Skills: - Flutter, Dart, BLoC, Clean Architecture, OOP, design patterns - Kotlin, Java, Swift, Android SDK, platform channels, native mobile integration - Firebase, GraphQL, REST API, Dio, Hive, RxDart, RevenueCat, in-app purchases - GitHub Actions, CI/CD, release automation, integration testing, code coverage - Architecture setup, technical leadership, technical documentation

Hello! My name is Ravija, and I bring over 6 years of experience in Mobile App Development and Full Stack Development. Throughout my career, I have worked with diverse industries and businesses to create innovative, user-friendly, and reliable solutions. My expertise lies in delivering high-quality applications and web platforms that meet client requirements and exceed expectations. ✅Mobile App Development Expertise I specialize in developing mobile applications that are intuitive, functional, and scalable. From native apps for iOS and Android to cross-platform solutions, I focus on creating experiences that users love. ✅My work includes: 🚀Developing feature-rich apps tailored to client needs. 🚀Ensuring seamless performance across different devices and operating systems. 🚀Incorporating user-friendly interfaces and design principles. 🚀Integrating APIs and third-party tools for extended functionality. Whether you need a mobile app for e-commerce, social networking, or business management, I can help turn your ideas into reality. ✅Full Stack Development Expertise As a Full Stack Developer, I am skilled in handling both frontend and backend development. My aim is to create dynamic, responsive, and secure websites and applications. I am proficient in: 🚀Designing and building interactive user interfaces with modern frameworks. 🚀Writing efficient backend code for seamless application functionality. 🚀Ensuring security and scalability for long-term usability. 🚀Working with databases, APIs, and cloud services to provide robust solutions. From simple websites to complex web applications, I take pride in delivering solutions that align with your goals. ✅Tools and Technologies I stay updated with the latest technologies and trends to ensure my clients receive the best solutions. My technical skill set includes: 🚀Programming Languages: JavaScript, Python, Java, Swift, and more. 🚀Frameworks & Libraries: React, Angular, Node.js, and Flutter. 🚀Databases: MySQL, MongoDB, Firebase. 🚀Version Control: Git, GitHub, GitLab. 🚀Other Tools: AWS, Docker, RESTful APIs, and more. ✅Why Work with Me? 🚀Client-Focused Approach: I take the time to understand your vision and requirements, ensuring the final product aligns with your goals. 🚀Timely Delivery: I am committed to meeting deadlines without compromising on quality. 🚀Problem-Solving Skills: I enjoy tackling challenges and finding the best solutions for complex requirements. 🚀Clear Communication: I maintain open and transparent communication throughout the project, keeping you updated at every stage. ✅Services I Offer 🚀Mobile app design and development (native and cross-platform). 🚀Full stack web development, including frontend and backend. 🚀API integration and development. 🚀Maintenance and support for existing applications and platforms. Let’s Work Together! If you’re looking for a reliable, experienced, and dedicated developer, I’m here to help. Whether it’s a new project or improving an existing one, I’m ready to bring your ideas to life. Let’s discuss your goals and create something exceptional together. Feel free to contact me to discuss your project details. I look forward to working with you! Thanks & Regards Ravija

Lead Product developer with skills in Web frontend, Mobile and UI/ UX. An excellent expertise of launching cross-platform MVPs for testing product theories and models. Professionally create mobile apps and web interfaces, starting from the user-flows and UX in Figma, further developing them in Swift or Flutter, or using React.JS/React Native stack. My experience includes working with core/low level in mobile: Bluetooth, NFC, VPN tunnels, Health Data, Data Encryption, GDPR and much more.