I help startups, founders, and businesses build high-performance web and mobile applications that scale. With experience in full-stack development and modern technologies, I focus on delivering clean, scalable, and business-driven solutions — not just code. 💡 What I can help you with: • Web App Development (React, Node.js, Python, Java, php , Laravel, etc.) • Mobile Apps (Android & iOS) • SaaS Product Development • API Integration & Backend Systems • AI-based automation tools 🚀 Why clients work with me: • I focus on business outcomes, not just development • Clear communication & fast delivery • Clean, maintainable code • Long-term support 📈 Recent results: • Built scalable platforms handling thousands of users • Delivered multiple production-ready apps • Helped clients launch MVPs quickly If you're looking for a reliable developer who understands both tech and business — let's talk.

I'm a Top Rated Full Stack & Mobile App Developer with 10+ years of experience building web applications, mobile apps, AI SaaS platforms, and custom software for startups and growing businesses. Most of my work involves helping businesses build new products, improve existing applications, add new features, fix performance issues, and scale their platforms as they grow. I also have strong UI/UX experience, so I can help with product planning, user flows, wireframes, prototypes, and Figma designs before development begins. 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘄𝗶𝘁𝗵: * Full Stack Web Development * Mobile App Development (iOS & Android) * AI SaaS Applications * UI/UX Design (Figma) * MVP Development * SaaS Dashboards & Admin Panels * REST API & Third-Party Integrations * AI Integrations & Automation * CRM & ERP Systems * Marketplace Platforms * E-commerce Solutions * Real-Time Applications * Existing Product Improvements * Bug Fixing & Long-Term Maintenance 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 * Next.js * React.js * React Native * TypeScript * JavaScript * HTML5 * CSS3 * Tailwind CSS 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 * Node.js * NestJS * Express.js * Laravel * PHP 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 * MongoDB * PostgreSQL * MySQL * Firebase 𝗖𝗹𝗼𝘂𝗱 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 * AWS * REST APIs * GraphQL * WebSockets * Stripe & Payment Integrations * OpenAI API * ChatGPT API * Claude API * Gemini API 𝗨𝗜/𝗨𝗫 & 𝗗𝗲𝘀𝗶𝗴𝗻 * Figma * Wireframes * User Flows * Interactive Prototypes * Design Systems * Responsive Design Over the years, I've worked on AI SaaS products, healthcare platforms, fintech applications, travel platforms, logistics systems, CRM solutions, booking platforms, marketplace websites, social platforms, and eCommerce applications. I enjoy working on both new and existing products. Some clients come to me with an idea that needs to be built from scratch, while others need help improving performance, redesigning the UI, adding AI features, cleaning up the codebase, or scaling an application that's already live. I write clean, maintainable code, keep projects organized, and stay involved throughout development to make sure everything works as expected. I also work closely with designers, founders, and product teams to turn ideas into products that are practical, reliable, and easy to maintain. I regularly use modern AI development tools such as Cursor, Claude Code, GitHub Copilot, and ChatGPT to improve development speed while keeping the codebase clean and production-ready. 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲: * Top Rated Upwork Freelancer * 10+ Years of Experience * Full Stack & Mobile Development * AI SaaS Development * UI/UX & Figma Experience * Clean & Scalable Code * Clear Communication * Reliable Long-Term Support If you're looking for someone who can handle both development and product thinking, I'd be happy to learn more about your project. 𝗞𝗘𝗬𝗪𝗢𝗥𝗗𝗦 𝗧𝗢 𝗙𝗜𝗡𝗗 𝗠𝗘: FullStackDeveloper #MobileAppDeveloper #WebDeveloper #SoftwareDeveloper #AI #AISaaS #SaaS #SaaSDevelopment #WebApplication #MobileApplication #React #ReactJS #ReactNative #NextJS #NodeJS #NestJS #ExpressJS #JavaScript #TypeScript #PHP #Laravel #MongoDB #MySQL #PostgreSQL #Firebase #AWS #RESTAPI #GraphQL #WebSockets #OpenAI #ChatGPT #ClaudeAI #GeminiAI #APIIntegration #ThirdPartyAPI #Stripe #PaymentGateway #Figma #UIUX #Wireframes #Prototyping #DesignSystems #MVP #ProductDevelopment #CRM #ERP #Marketplace #Ecommerce #CloudComputing #AgileDevelopment.

🚀 100k+ MAU app dev experience ✅ 99.9% crash & ANR free users across all launched apps ✅ 10yrs in the trenches: native Android Developer & Mobile Developer ✅️ 4.5+ average rating across launched Google Play apps ✅️ Staying compliant with Google Play policies ✅️ Kotlin + Jetpack Compose ✅️ Hands-on experience with local LLMs, MediaPipe, LiteRT / TFLite and AI-powered apps ✅️ Hands-on experience with Kotlin Multiplatform ( KMP , CMP ) ✅️ 5-star feedback from past clients ✅️ 100% JSS ✅️ 30+projects delivered As a 10yrs Android Developer & Kotlin Developer, I help founders build, scale, and maintain complex apps, fix "vibe-coded" app performance, and integrate on-device AI / LLMs to save cloud costs. In 2026 I specialize in: - on-device AI integration using MediaPipe / LiteRT / Google ML Kit / TensorFlow ( Object detection , Face detection , Pose detection , Text summarizing, OCR , TTS, STT ); - video / media editing apps ( FFMpeg , AndroidX Media3 , MediaCodec ); - build, improve and maintain media , social , edtech, utility, productivity tools); - performance optimization , bug fixing , firebase crash resolution and ANRs 🌟🌟🌟🌟🌟 Recent feedback : "I was particularly impressed by his strong attention to detail - nothing was overlooked, and the quality of the work consistently met high standards. He showed real commitment to the project, staying engaged and proactive throughout the development process. His regularity and consistency in delivering work made collaboration smooth and reliable." - Neil 🚀 Also I've been building my own Android apps so that gives me a deep understanding of not only a technical part but also ASO and monetization strategy. ✅️ Recent large-scale projects: --- PDF Maker & Reader (130k+ installs , 🌟4.6 on Google Play) Role: Android Developer / Android App Developer / Kotlin Developer I recently built this high-performance Android app from scratch based on Figma mockup using Kotlin. It allows users to quickly convert images to PDF and edit existing PDFs using a fast, local-first architecture. The app has achieved 130k+ downloads and 8k monthly active users on Google Play, with the crash rate lower than 0.1%. --- --- US Medical Education App (COMQUEST for COMLEX & COMAT Prep) Role: Android Developer / Android App Developer / Mobile Developer As part of an international team alongside iOS Developer and Web Developer, I built this Android app from scratch based on Figma designs for US medical students. Continue providing ongoing support for this project, ensuring the mobile app remains a stable and reliable tool for users. --- --- US Automotive Video Suite app Role: Android Developer / Android App Developer / Mobile Developer In collaborating with an iOS Developer and a Full Stack Developer, I built two native Android apps from scratch as a clone of iOS apps (Dealer Video Inventory and Dealer Video Suite) that allows dealers to capture high-quality vehicle inventory videos and photos. These projects helps dealers increase sales through personalized video. --- 🌟 🌟🌟🌟🌟 "Dmitri is a pleasure to work with. He's Android programming skills are exceptional. He's always professional and easy to work with. He is very methodical in his approach. Which at times has resulted in delivery scheduling slipping a little but I rather have a good product than a hastily put together product. We're continuing to work with Dima for other projects." - Philip Whether you are looking for a Mobile Developer to lead a new project or an Android Developer to optimize an existing Java / Kotlin codebase or optimize performance, my goal is to provide technical clarity and long-term stability. As a team player for cross-platform projects I have a proven track record of working alongside iOS developers to ensure smooth releases. I also have specific experience collaborating with Flutter Developers and Full Stack Developers to bridge the gap between cross-platform Flutter / React Native code and the system features specifically by developing custom Java / Kotlin modules to handle native Android OS functionality that standard Flutter plugins can't reach. --- 🚀 My core stack: 🔸️Languages: Java , Kotlin 🔸️UI: XML , Jetpack Compose 🔸️Architecture: MVVM , MVI , Clean Architecture 🔸️Native: Android SDK , Android Studio 🔸️Multiplatform: Kotlin Multiplatform ( KMM / KMP ) / Compose Multiplatform ( CMP ) 🔸️Key features: Camera , Photo & Video capture and edit using FFMpeg , OpenGL , OpenCV ; GPS , Location , Chat , Background syncronization , WorkManager and foreground services, ofline-first approach, on-device AI / LLM , VPN / WireGuard , ExoPlayer / Media3 🔸️On-device AI integration : Video analysis , Image recognition , Object detection , Face detection , Pose Detection , Camera stream analysis , Text-to-Speech , Speech-to-Text ( MediaPipe / Google AI Edge , TensorFlow / TFLite , Google ML kit ). 🔸️Cloud AI integration : OpenAI , Gemini API

I'm a mobile app developer for startups and growing businesses, I turn app ideas into live, scalable products for iOS and Android, fast, clean, and built to grow. Top Rated with senior roles at Vodafone and e-finance, I've shipped payment-grade apps to over 50 million users across fintech, e-commerce, and government services. What I help clients with: Mobile app performance optimization — smooth 60fps, faster startup, smaller app size Mobile app bug fixing — fast, reliable fixes for crashes and janky UI Mobile app security enhancement — secure auth, encrypted storage, safe payments Cross-platform mobile apps — iOS + Android from a single codebase Flutter UI design and pixel-perfect implementation from your Figma What I can build for you: Native Android apps with Kotlin, Jetpack Compose, and Clean Architecture Cross-platform apps with Flutter and Kotlin Multiplatform (KMP) Flutter app performance tuning for apps that feel instant Java backend for mobile apps and scalable API integration Payment integrations — Stripe, PayPal, Mastercard, and local gateways AI-powered features, real-time apps, Firebase, and Play Store / App Store deployment Industries I've shipped in: Fintech & mobile banking · E-commerce · Healthcare · Education · Delivery & Tracking · SaaS · Startup MVPs You'll get clear communication, realistic timelines, clean code, and a product-focused developer who understands startup speed without sacrificing quality. Send me your app idea, Figma design, or current codebase — I'll reply with a clear delivery plan. Skilled in: Flutter App Development, Android App Development, Kotlin, Kotlin Multiplatform, Jetpack Compose, iOS Development, Java, Firebase, Mobile App Performance, API Integration.

I have 18+ years of professional experience in Mobile App Development. I have successfully executed numerous projects globally with different clients in various countries. As a Developer, I strongly appreciate optimum, clean, well-structured & communicative code. I have extensive experience in following technology & Skills. - Flutter / Dart - Android / Kotlin - Firebase / MySql / SQLite - MobX / BLOC state management - Google maps - Google, Facebook, Email, Twitter, Github, Phone, Apple authentications - Crashlytics, Google Analytics, Admob, Push notifications - Custom widgets and complex animations - In-App purchase, Stripe - Figma, Sketch, Adobe XD resource extraction - BDD, TDD Thanks a million for viewing my profile.

I build Android apps that actually ship - not just prototypes. I have 8+ apps live on the Google Play Store right now, built with Kotlin, Jetpack Compose, MVVM, and Firebase/SQLite. One of my apps, Clozzy, is an AI-powered wardrobe & outfit planning app currently live on the Play Store - you can check it out and see real, working code in production, not just a portfolio screenshot. What I bring to your project: ✅ Full lifecycle: Figma wireframes → architecture → Play Store deployment ✅ Clean, modern architecture (MVVM, Coroutines/Flow, StateFlow) ✅ Real experience across medical, retail, and IT client apps ✅ Fast communication and daily updates My promise: if you're not satisfied with the first milestone, I'll revise it free or refund that milestone - no arguments. I'd rather earn a long-term client than take a one-time payment. Let's talk about what you're building.

✅ 100% Job Success | Top Rated on Upwork 📊 49 Jobs | 5,025+ Hours Worked | 5★ Reviews 🏆 Certified by the Government of Mauritania (World Bank Projects) 👨‍💻 10+ Years’ Experience in Native Mobile App Development 🚀 Specialising in Automotive, BLE, IoT, HealthTech, Wearables 🤖 Fun Fact: I use AI tools like ChatGPT & Copilot to speed up development & debugging. 🔧 Core Tech Stack Android (Kotlin/Java): • Jetpack Compose, AndroidX, RxJava, Coroutines • Hilt, Dagger, Room, WorkManager • Material Design, ConstraintLayout, MotionLayout • Testing: Espresso, Robolectric, JUnit iOS (Swift/Obj-C): • SwiftUI, UIKit, Combine, CoreData, AVFoundation • MapKit, Vision, CoreML, SiriKit • Tools: Xcode, Instruments, Fastlane, SwiftLint • Testing: XCTest, XCUITest 🚘 Automotive & Multimedia • Android Auto & Apple CarPlay • MediaBrowserService, ExoPlayer, AVPlayer • Turn-by-turn SDKs: Google Maps, Mapbox, HERE • Voice Assistants: SiriKit, Google Assistant 📶 IoT, BLE & Connectivity • BLE, Classic Bluetooth, CoreBluetooth • Nearby Connections, WiFi Direct • MQTT, WebSockets, IoT Device Sync ☁️ Cloud, APIs & Backend • Firebase (Auth, Firestore, FCM, Remote Config) • Supabase, AWS Amplify, AppSync • REST APIs, GraphQL, Retrofit, Apollo • Local Storage: Room, CoreData, SQLite 💰 Monetization & Notifications • RevenueCat, StoreKit, Google Billing • FCM, APNs, PushKit, Local Notifications 🧱 Architecture & Clean Code • MVVM, Clean Architecture, Repository Pattern • SOLID Principles, Modular Codebases • DI Tools: Hilt, Dagger 🚀 Deployment & CI/CD • Play Console, App Store Connect • Fastlane, Bitrise, Firebase Distribution • GitHub Actions, Code Signing, TestFlight 🧠 Advanced Features • Geolocation, Geofencing, Biometric Auth, Background Services • Deep Linking, App Clips, Widgets, Spotlight, Siri Shortcuts • WatchOS, WearOS, HealthKit, Google Fit • Accessibility, RTL, Multilingual Support 🏅 Certifications Government of Mauritania – World Bank Projects Android Jetpack Masterclass – Udemy (Feb 2025) iOS SwiftUI Mastery – Simplilearn (Feb 2025) Agile Scrum Master – Simplilearn (Feb 2025) Firebase Essentials – Google Developer Training BLE & IoT Mobile Integration – Coursera 🤝 Why Clients Choose Me ✔️ 100% Job Success + Top Rated + Long-Term Clients ✔️ Native-first with Automotive, BLE & Wearable Expertise ✔️ Fast Delivery, Clean Code, Agile Collaboration ✔️ Sharp UI/UX & Robust Architecture for Scaling 📌 Let’s bring your mobile app idea to life — with speed, quality & clarity. #Kotlin #Swift #JetpackCompose #SwiftUI #AndroidAuto #CarPlay #BLE #Firebase #RevenueCat #WearOS #WatchOS #GraphQL #RoomDB #Fastlane #GitHubActions #MobileDev

Android Engineer with 7+ years building production-grade fintech, banking, and consumer apps. I pioneered the first WebSocket + Protobuf implementation on Android , and engineered Paging 3 pagination and Gradle Version Catalogs optimization reducing build configuration duplication by 30% across 10 modules. What I bring to your project: Native Android (Kotlin + Jetpack Compose) — full feature development, UI from Figma, Clean Architecture, MVVM, and modular design. I ship fast without cutting corners. Fintech & Banking expertise — transaction flows, secure authentication, real-time data (WebSocket, Protobuf), payment SDK integration (GoPay, chip/server-based), and Play Billing. I understand compliance-critical environments. Flutter cross-platform — built full apps with BLoC, Dio, and Modular architecture. Delivered AI-integrated chat, attendance systems, and tourism apps from scratch. Performance & stability — RecyclerView/Paging 3 optimization, StrictMode profiling, scroll performance fixes, crash reduction, and background service management. SDK & integrations — Firebase (Auth, FCM, Firestore, Analytics, Crashlytics), Google Maps, SSO, REST/Retrofit, Room, and third-party SDK onboarding. Key achievements from production apps: - Improved task completion speed 20% by revamping UI - Reduced Gradle build duplication 30% - Cut critical bug backlog 40% , extending product lifecycle - Built AR virtual makeup try-on app with 25% latency reduction - Delivered payment SDK integrated I work async-first, communicate proactively, and treat every codebase like it's my own. 100% Job Success on Upwork across all completed contracts. Ready to discuss your project — share your idea or existing codebase and I'll propose a practical plan.

I am a dedicated and passionate Software Engineer with a robust background in backend development, particularly specializing in NestJs and Spring Boot. My experience extends to native and multiplatform mobile development with kotlin and web development with Angular, providing me with a comprehensive understanding of full-stack development. My enthusiasm for technology also drives my interest in DevOps, where I explore innovative software architecture solutions to enhance efficiency and scalability. Additionally, I have hands-on experience in native Android application development, utilizing Android Studio with both Java and Kotlin to create seamless and user-friendly mobile applications. As I continue to grow and expand my expertise, I am eager to collaborate on challenging projects and contribute to cutting-edge advancements in the software engineering field

I’m a dedicated Android and Flutter developer with 13+ years of professional experience building reliable, scalable, and user-friendly mobile and web applications. What I Can Help You With: ✅ Android app development (Java, Kotlin, MVVM) ✅ Flutter mobile & web app development (BLoC state management) ✅ Firebase (Firestore, FCM, Storage, Analytics, Hosting) ✅ REST API integration & real-time socket communication ✅ Google Maps, GPS & location-based apps ✅ BLE & IoT device integration ✅ Hardware communication (MODBUS, BACnet, USB Serial OTG) ✅ In-App Purchases & AdMob integration Project Experience: - Built 2 Flutter mobile apps and 5 Firebase-based web apps - Developed Android apps for IoT, industrial hardware, and RealWear wearable devices - Implemented real-time data, analytics, and secure backend communication I focus on writing clean code, optimizing performance, and ensuring long-term maintainability. Whether you need a full app from scratch or enhancements to an existing project, I’m ready to help. 📌 Available for long-term contracts and challenging projects 📌 Comfortable working independently or with teams Thank You Durgesh