I'm experienced mobile developer. I use Flutter and MAUI frameworks. I have good understanding of modern mobile applications trends, you can check my portfolio. I always prefer establish good communication level with customers to provide exactly what they need and adapt fast to changing requirements. I'm confident, self-motivated and result-oriented person who can work under minimal observation. I can work both efficiently as team player and as individual. I've built and managed projects for individuals and startups. Business logic, API, database layers are in core project(.net standard library), platform projects are only for data showing and some platforms specific features with native UI and UX guidelines. Xamarin utilizes C# as its key programming language. This enables more than 70% of the code to be reused between iOS, Android and other platforms. An app built with Xamarin offers the same level of performance as that of a natively developed app. Expertise: ✅ 13 years experience in software development and more than 6 years in mobile development. ✅ Languages: C#, Objective-C, Swift, Java ✅ Strong knowledge in Android and iOS SDKs. ✅ ASP.NET, Web.Api, WCF, Windows Services, WinForms, WPF ✅ MSSQL, Oracle PL/SQL ✅ Binding Java(.aar) and Objective-C or Swift libraries(CocoaPods) ✅ Native mobile app development for iPhone, iPad, Android phone and tablet ✅ Creating complex UI iOS(Storyboard, .xib or AutoLayout), Android(xml) ✅ Database: SQLite, Realm ✅ Razor cshtml templates ✅ Communication: REST(HttpClient), WebSocket(websocket-sharp, SignalR) ✅ Social network integration: Facebook, Twitter, Instagram, VKontakte, Google+, etc ✅ Barcode scanning(Firebase, ZXing) ✅ Chatting protocol: XMPP(eJabber), Meteor(rocket.chat) ✅ Map integration: Google Maps(iOS, Android), MapKit(iOS), OpenStreetMap(Android) ✅ Payment services: In-App Purchase, Stripe ✅ AdMob (Banner, Full screen, Video) ✅ Analytics services: Google Analytics, Firebase Analytics, AppCenter, AppsFlyer ✅ CI/CD & Crash Reporting: AppCenter, Azure DevOps ✅ iOS, Android Linker(link all), proguard, r8 ✅ Distribution: Apple Store, Google Play ✅ Design Tools: Sketch, Zeplin, XD

Hi everyone, I offer: 🔥𝐅𝐫𝐞𝐞 𝐭𝐞𝐜𝐡 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧, 𝐟𝐫𝐞𝐞 𝐞𝐬𝐭𝐢𝐦𝐚𝐭𝐢𝐨𝐧, 𝐜𝐨𝐝𝐞 𝐚𝐮𝐝𝐢𝐭, 𝐝𝐚𝐭𝐚 𝐫𝐞𝐯𝐢𝐞𝐰, 𝟑𝟎-𝐦𝐢𝐧 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐜𝐚𝐥𝐥, 𝐚𝐧𝐝 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞𝐝 𝐩𝐨𝐬𝐭-𝐥𝐚𝐮𝐧𝐜𝐡 𝐬𝐮𝐩𝐩𝐨𝐫𝐭🔥 Send me the word “ARCHITECTURE”, and 𝐈’𝐥𝐥 𝐫𝐮𝐧 𝐚 𝟑𝟎-𝐦𝐢𝐧𝐮𝐭𝐞 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐬𝐞𝐬𝐬𝐢𝐨𝐧 𝐭𝐨 𝐦𝐚𝐩 𝐲𝐨𝐮𝐫 𝐌𝐕𝐏 𝐨𝐫 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐢𝐧𝐭𝐨 𝐚 𝐛𝐮𝐥𝐥𝐞𝐭𝐩𝐫𝐨𝐨𝐟 .𝐍𝐄𝐓 𝐞𝐜𝐨𝐬𝐲𝐬𝐭𝐞𝐦, 𝐬𝐚𝐯𝐢𝐧𝐠 𝐲𝐨𝐮 𝐦𝐨𝐧𝐭𝐡𝐬 𝐨𝐟 𝐭𝐫𝐢𝐚𝐥 𝐚𝐧𝐝 𝐞𝐫𝐫𝐨𝐫. With 8+ years in Flutter, Dart, .NET MAUI, Xamarin, C#, Clean Architecture, MVVM, I build scalable, cross-platform apps for MVPs to enterprise SaaS. Portfolio & Key Projects: 📌 Clarity Locums – Healthcare Staffing App Multi-role scheduling, offline-first (Hive/LiteDB), push notifications, interactive maps, calendars & filters 📌 TaskMaverick – Enterprise Workflow Platform Flutter & cross-platform mobile, modular admin dashboards, offline support, CI/CD pipelines (Codemagic, AppCenter) 📌 FOREX dot com – FinTech Trading Platform Flutter Web & mobile dashboards, real-time data (REST API, WebSocket), optimized for 1M+ users 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ✔️Flutter/Dart: Mobile, Flutter Web, iOS/Android, responsive UI, adaptive layouts ✔️State Management: BLoC, Riverpod, Provider, Streams (RxDart) ✔️Architecture: Clean Architecture, MVVM, dependency injection (GetIt, Injectable) ✔️API & Data: REST API (http, Dio, Retrofit), Firebase (Auth, Firestore, Cloud Messaging), SQLite, Hive, Drift, Freezed/json_serializable, WebSockets ✔️Navigation: auto_route, deep linking, Flutter Navigator 1.0/2.0 ✔️Offline & Push: Offline-first, caching, push notifications, background sync ✔️Advanced Features: Platform channels, AI/TFLite integration, Flutter Localizations, Google Maps API, in_app_purchase, Flame engine, Remote Config, Crashlytics ✔️Dev Tools & CI/CD: Android Studio, Xcode, VS Code, Postman, Swagger, Git, Codemagic, AppCenter, Azure, Jira, Trello ✔️Industries: Healthcare, FinTech, Enterprise SaaS, Retail, Logistics, E-commerce Upwork Tags for Ranking: Flutter, Dart, Cross-Platform, Mobile App, BLoC, Riverpod, Provider, Clean Architecture, MVVM, Firebase, Hive, SQLite, REST API, Flutter Web, CI/CD, Offline-First, Push Notifications, Flutter Localizations, Google Maps API, Dio, Retrofit, AutoRoute, WebSockets, In-App Purchases, Flame, Remote Config, Crashlytics, iOS, Android, Cross-Platform Mobile, State Management, Dependency Injection, Freezed, JSON Serialization, Platform Channels

I help companies migrate Xamarin applications to .NET MAUI, fix difficult ASP.NET Core issues, and rescue legacy .NET systems that other developers struggle to stabilize. Clients usually hire me when: • A Xamarin → .NET MAUI migration is failing or incomplete • An ASP.NET Core backend issue has remained unresolved • Performance problems are slowing down production systems • A legacy .NET application needs modernization without downtime • A desktop/mobile system requires reliable long-term architecture Recent work includes: • Migrating production Xamarin apps to .NET MAUI • Resolving long-standing ASP.NET Core issues unresolved by previous freelancers • Building high-performance middleware for machine communication • Developing POS and enterprise systems using ASP.NET Core, Blazor, and WPF I focus on fast diagnosis, maintainable architecture, and reliable delivery with minimal hand-holding. Core Expertise: • .NET MAUI & Xamarin Migration • ASP.NET Core MVC / Web API • Blazor & Enterprise Web Applications • WPF Desktop Applications • SQL Server Optimization & Entity Framework Core • REST APIs & Backend Architecture • Middleware & Hardware Communication Systems • Performance Optimization & Debugging Technical Stack: C#, .NET MAUI, Xamarin, ASP.NET Core, Blazor, WPF, Entity Framework Core, SQL Server, SignalR, REST APIs, Azure App Services, Web API, JavaScript Currently working full-time on enterprise ASP.NET Core systems, REST APIs, SQL optimization, and large-scale .NET applications. I communicate clearly, work independently, and write clean, scalable code designed for long-term maintainability.

********Upwork TOP Rated | 100% Client Recommendation ****** 12+ years of experience in developing medium to enterprise-level applications from scratch and migrating legacy applications to the latest technology. I am specialized in: - ASP.NET Core, ASP.NET MVC, C#, VB.Net, WPF, VB6, EF6, LINQ and Xamarin. - Angular/React Latest Versions. - CMS- NopCommerce, Umbraco, Sitecore, Sitefinity. - SQL Server, SSRS, SSIS, UDF, and Stored Procedures. - IoC/ DI implementation, Repository, and Unit of Work Pattern and Singleton. - Bootstrap, Javascript, JQuery, HTML5, CSS3 and Ajax. - Azure & AWS Cloud Services Experienced in Mobile Application Development through Xamarin for 3+ years. Business Domain Expertise - ERP, CRM, Survey Solutions, Drip Campaigns, and Loyalty Programs. Project Management Tools - Very well familiar with Jira, Asana, Ace, and Trello. Version Control Systems - Git, TFS, and SVN. Thanks for reviewing my profile.

I am committed and dedicated to my works and to my clients. My rules are i) Client satisfaction is the key to success, ii) Design everything before implementation and iii) Write good code with proper documentation. But I believe in exception and every rule has an exception. I have 17+ years of experience with C++/Qt/QML/Felgo, C#/VB/.NET/Xamarin/MAUI/Avalonia/iOS/Android, etc. I do also code in Node.js, Go, Rust and MongoDB for server/backend and API stuff. I have also achieved the 'Digia Certified Qt Developer' and 'Digia Certified Qt Specialist' certifications.

⭐ 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

✅ Successfully achieved Top Rated Plus Badge ✅ Over 15+ years of experience in the domain. ✅ 250+ successfully developed applications. I am a Full Stack .NET Developer with 15+ years of experience building scalable web, desktop, and mobile applications. With a Master's degree in Computer Applications (MCA) and extensive industry experience, I specialize in delivering high-quality software solutions from concept to deployment. Technical Expertise ✔ Desktop Development: WPF, MVVM, Prism, C#, .NET Framework ✔ Mobile Development: .NET MAUI, Xamarin Forms ✔ Web Development: ASP.NET Core, ASP.NET MVC, Blazor ✔ Backend Development: REST APIs, Web API, WCF, Entity Framework, LINQ ✔ Database: SQL Server ✔ Frontend: HTML, CSS, Bootstrap, JavaScript, jQuery ✔ Payment Integrations: Stripe, PayPal, Authorize.Net ✔ Architecture: Object-Oriented Design, Design Patterns, Clean Architecture, Agile Development UI/UX & Design In addition to development, I have experience creating modern, user-friendly interfaces using Figma, Adobe XD, Photoshop, and Illustrator. This enables me to build applications that are both technically robust and visually appealing. What I Can Help With • Full-stack .NET application development • WPF desktop applications and modernization • MAUI/Xamarin mobile applications • ASP.NET Core and MVC web applications • API development and third-party integrations • Bug fixing, maintenance, and performance optimization • UI/UX design and implementation • Long-term product development and support I am committed to delivering clean, maintainable code, clear communication, and reliable results that help businesses achieve their goals. Let's discuss how I can contribute to your project.

Experienced in: 1. Computer vision • C++, Python, OpenCV, CUDA, Git, Linux, Qt, Boost, OpenGl, PCL, Strong math background, Neural Networks - road segmentation for unmanned vehicles (ENet, Caffe, OpenCV, C++, Linux) - car tracking (Yolo v3, OpenCV, C++, Linux) - wagon number identification (Yolo v4, Python) - implementation of real time 360°/perspective camera transformation on Cuda (C++, Cuda, OpenCV, Linux, Jetson Nano) - distance calculation to point on 2D camera frame (C++, OpenCV, Linux) - automate grading system for handwritten answer sheets (computer vision part, OpenCV, Java, Android Key stack: Linux, C++ (Qt), Python, Java, OpenCV, Yolo (darknet) 2. Machine Learning Machine learning research projects in the following domains: - person segmentation (ModNet, RVM, TDNet, UCTransNet, XMem etc.) - image inpainting (Pen-Net, Deepfillv2, Shift-Net, ViNet etc.) - image upscale (RDN, RRDN, Stable Diffusion, ISR etc.) - image relighting (Total Relighting, DPR, RelightNet etc.) - road segmentation for unmanned vehicles (ENet, Caffe, OpenCV, C++, Linux) - car tracking (Yolo v3, OpenCV, C++, Linux) - wagon number identification (Yolo v4, Python) - implementation of real time 360°/perspective camera transformation on Cuda (C++, Cuda, OpenCV, Linux, Jetson Nano) - distance calculation to point on 2D camera frame (C++, OpenCV, Linux) - automate grading system for handwritten answer sheets (computer vision part, OpenCV, Java - Android, IOS - Swift) Key stack: Linux, Python, Pytorch, Tensorflow, OpenCV, Pillow, Numpy, C++, CUDA, Darknet, SegNet 3. Robotics and Embedded development: - OCPP Protocol, Linux, Modbus, Raspberry Pi, CAN; -ROS Robot operating system; - Skilled in SLAM, localization, mapping - Experienced in path planning algorithms, obstacle avoidance, holonomic, and non-holonomic motion planning, trajectory planning for robotics arms; - Used to work with Bayesian/Kalman filters, and sensor fusion (LiDAR, IMU, Visual, Odometry, Radar, GPS). 4. Android development (Kotlin, Java, Android Studio, Eclipse, Firebase). Has expert colleagues in: • .Net Framework (C#, VB.Net, ASP.Net, .Net Core, WPF, UWP,WCF, ADO.Net) • Java (j2se, j2ee, servlets, java beans, Maven) • JavaScript (Node.JS, Express.js, Vue.js, Element.js, Angular.js, D3.js) • C++ (TCP/IP, HTTP, HTTPS, WebSocket, Modbus) • Python (MAVLink, WebSocket) • Step7 (S7 Communication, OCPP, Modbus, CANOpen, ProfiNet) Database • PostgreSQL • MySQL • MongoDB • Microsoft SQL • Oracle Database • Neo4J Software development for mobile platforms • Crossplatform React Native, Flutter, Xamarin, • Android (Kotlin, Java, Android Studio, Eclipse) • iOS (Objective C, Swift) Mobile apps development: • Crossplatform: Futter, React Native, Xamarin. • Android (Java, Kotlin) • iOS (Objective C, Swift) 1. Native Development - Kotlin/Java - Swift / Objective-C - iOS/macOS/tvOS/watchOS - Firebase, CloudKit, Coredata 2. Cross-Platform and Hybrid App Development - React Native/React - Flutter / Dart - Xamarin.iOS / Xamarin.Android / Xamarin.Forms tech stack ● Android Studio, Gradle, Kotlin DSL, KSP ● Kotlin, Java programming languages ● AndroidX, Android Jetpack libraries, Android Architecture Components ● Jetpack Compose ● Material Design Components ● Clean Architecture, SOLID design principles ● MVVM, MVI, GoF design patterns ● Modularization (multi-module projects) ● Kotlin Coroutines + Flow, RxJava, RxBinding ● REST API / Networking - OkHttp, Retrofit 2, Socket IO ● Room Database, SQLite, Datastore ● Kotlinx Serialization, Protobuf, Moshi, Gson ● Dependency Injection (Hilt, Dagger 2, Koin) ● Git ● Firebase Products, Google Cloud APIs, HMS Services ● Admob, Google Play Billing Library (in-app purchases), Samsung/Huawei IAP ● Unit / Instrumented (UI) tests ● Agile Scrum development methodology ● CI/CD (GitHub Actions) AR/VR: Vuforia ARkit/ARcore/AR Foundation Wikitude Oculus Integration OpenXR XR Interaction toolkit VR Walkthrough UltimateXR VR Interaction Framework Hardware expert: • Nvidia Jetson Nano, TX2, Xavier; • Raspberry Pi; • Arduino, STM32; • Depth cameras Intel Realsense d435i , Zed Sterelabs. • Lidars, Radars. Charging stations for the Electric Vehicles development software for the managing stations and networks (server and user applications): • C#, SQL, PostgreSQL, .Net Core, REST Api, WebSockets • OCPP Protocol, Linux, Modbus, Raspberry Pi Software development • .Net Framework (C#, VB.Net, ASP.Net, .Net Core, WPF, UWP,WCF, ADO.Net) • Java (j2se, j2ee, servlets, java beans, Maven) • JavaScript (Node.JS, Express.js, Vue.js, Element.js, Angular.js, D3.js) • C++ (TCP/IP, HTTP, HTTPS, WebSocket, Modbus) • Python (MAVLink, WebSocket) • Step7 (S7 Communication, OCPP, Modbus, CANOpen, ProfiNet) Database • PostgreSQL • MySQL • MongoDB • Microsoft SQL • Oracle Database • Neo4J

Stuck with a half-built MVP, missed deadlines or developers who vanish after launch? 𝐈 𝐡𝐞𝐥𝐩 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐧𝐝 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬, 𝐫𝐨𝐛𝐮𝐬𝐭 𝐌𝐕𝐏𝐬, 𝐚𝐧𝐝 𝐜𝐮𝐬𝐭𝐨𝐦 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐝𝐞𝐬𝐢𝐠𝐧𝐞𝐝 𝐟𝐨𝐫 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐠𝐫𝐨𝐰𝐭𝐡, 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞, 𝐚𝐧𝐝 𝐦𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐚𝐛𝐢𝐥𝐢𝐭𝐲. ✅ Services • SaaS Product Development • MVP Development for Startups • Custom Web Applications • Admin Dashboards & Internal Tools • Subscription & Payment Systems (Stripe) • API Development & Integrations • Performance & Scalability Optimization • Ongoing Product Development 💻 Tech Stack React.js • Next.js • TypeScript Node.js • .NET Core • Xamarin PostgreSQL • MongoDB AWS • Docker • Vercel 📈 Recent Results • Built and launched multi-tenant SaaS platforms • Developed subscription-based products with Stripe • Created scalable APIs and backend systems • Delivered startup MVPs in weeks, not months • Built admin portals, dashboards, and business platforms Why clients hire me: ✔ Top-Rated Upwork Freelancer ✔ 13+ Years of Full Stack Development Experience ✔ Clean, Scalable, Production-Ready Code ✔ Fast Communication & Reliable Delivery ✔ Strong Focus on Business Goals and User Experience If you're looking for a developer who can understand both the technical and business side of your product, let's talk. 📩 Send me an invitation and let's discuss your project.

I have 14 years of experience in Java, Android, iPhone, and Web Development. I have developed over 150 Android and iPhone apps, many of which are available on various app stores, along with their corresponding backends and web applications. I am capable of delivering any type of high-quality application on time. ✅ Top Rated ✅ More than 10600 hours of work ✅ SwiftUI, React Native, Flutter, MAUI ✅ Back-end API development (Node.JS / Flask / Django) ✅ Machine Learning