𝗣𝗿𝗼𝘃𝗲𝗻 𝘁𝗿𝗮𝗰𝗸 𝗿𝗲𝗰𝗼𝗿𝗱: 25+ production-ready apps built with Flutter & Firebase, published 14+ Native Android Apps, generating over 8 figures in revenue 𝗘𝘅𝗽𝗲𝗿𝘁 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆: CI/CD automation, clean architecture, and reliable app store publishing 𝗘𝘅𝘁𝗿𝗲𝗺𝗲𝗹𝘆 𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲, 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝘃𝗲 𝗮𝗻𝗱 𝗙𝗮𝘀𝘁: Regular updates, clear milestones, and proactive collaboration 𝗘𝗻𝗱-𝘁𝗼-𝗲𝗻𝗱 𝘀𝘂𝗽𝗽𝗼𝗿𝘁: From Figma design to post-launch maintenance • Reliable support after launch I've had the privilege of propelling clients to significant milestones, including 2 production mobile apps with real users and measurable business impact. Some notable successes include: - A restaurant management app helping streamline dining operations and enhance customer engagement through a seamless mobile experience - A ride-sharing app supporting driver, customer workflows and transportation operations with a reliable, user-friendly mobile platform I’m a Flutter & Android (Kotlin) developer with 𝟳+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 delivering production-ready mobile apps. AI speed combined to deliver code that ships fast, feels premium, and scales without cracking. (Available for 2 projects in July 2026) • End-to-End Expertise: Flutter (iOS & Android) and native Android (Kotlin) development - from UI/UX design (Figma-to-code) to back-end integration and deployment. • Modern Architecture: Implement MVVM/Clean Architecture and Jetpack Compose for maintainable, scalable code, integrate Firebase, REST/GraphQL APIs, payment gateways (Stripe/PayPal) and 3rd-party SDKs. My core expertise: • Flutter App Development (Android & iOS) • Native Android development using Kotlin • MVP Development for Startups • AI-Powered Mobile Applications • Firebase Integration (Authentication, Firestore, Realtime Database, Cloud Messaging (FCM), Crashlytics, Remote Config, Cloud Storage ) • REST API & Third-Party SDK Integration (GraphQL, Node.js, Firebase Cloud Functions, Supabase, WebSockets, Twilio) • Payment Gateway Integration (Stripe, Razorpay, PayPal, Google Play Billing, Apple In-App Purchase, RevenueCat) • Maps, Geolocation & Real-Time Tracking (Google Maps SDK, geolocation, geofencing, live tracking, route optimization ) • Chat, Notifications & Real-Time Features • Figma to Flutter / Android • Google Play Store & Apple App Store Deployment I'm a mobile app developer who builds full apps from scratch in both Flutter and native Android (Kotlin), extends existing Flutter apps with custom native Kotlin modules when a plugin falls short, and has particular depth in two-sided marketplace apps, platforms connecting two different types of users (clients/professionals, hosts/guests, buyers/sellers) with booking, messaging, and payments built to work cleanly for both sides. Tech Stack: Flutter • Dart • Kotlin • Firebase • Supabase • REST APIs • SQLite • Room Database • Stripe • Google Maps • Push Notifications • Riverpod • BLoC • GetX • Jetpack Compose • Kotlin Coroutines & Flow • Hilt/Dagger • Android SDK • Git • GitHub • Figma Message me "AUDIT" - get a free 30-min technical consultation. During our session, we’ll:
 ✅ Explore your goals, technical requirements, or existing app review feedback ✅ Outline a roadmap with timelines and cost estimates
 ✅ Recommend the best tech stack and development approach 🤝 𝗟𝗘𝗧'𝗦 𝗪𝗢𝗥𝗞 𝗧𝗢𝗚𝗘𝗧𝗛𝗘𝗥

I help startup founders and established businesses launch high-quality iOS, Android, Web, and cross-platform apps fast. As a senior mobile developer, I’ve shipped dozens of apps using SwiftUI, React Native, React Web, Kotlin, Unity, Firebase, AWS, and Azure, including an AR app for NASA’s Visitor Center at Goddard. Whether you’re building an MVP, adding features, or integrating with cloud services, I bring solo execution and clean delivery. No bloated teams. No hand-holding required. Recent and notable work: • NASA: Unity-based AR app for iOS and Android • iOS startups: Social and animation-sharing apps • AI integrations: OpenAI, Hugging Face, RAG, and API workflows • React Web apps with backend integrations • AR/VR product visualization tools • Firebase Functions and Azure cloud apps • Published apps on App Store and Google Play Clients hire me for: • Full app builds from scratch • Debugging and scaling existing codebases • Fast turnaround on scoped deliverables U.S.-based | Rutgers CS graduate (4.0 GPA) | Available for hourly or fixed-scope work

Dear my Precious Client, My name is Nhan Nguyen. I'm a Senior Developer from Soin Media, a premier software outsourcing company dedicated to connecting global enterprises with elite engineering talent. My Job Success Score is 100%. And I'm one of Top Rated Plus freelancers on Upwork. I started my freelancing career in 2009. I've been working on Upwork since 2010. With 128 completed jobs, 2681 paid hours, and more than 18 year experience, I will deliver your website, web application, and mobile application smoothly and satisfactorily. You will be satisfied with the final products, and we will have a comfortable journey together from the beginning to the ending of the project. You can check my working history for previous feedback from my clients. Collaborative, committed to quality, clear communicator, reliable, accountable for outcomes, solution oriented, professional, detail oriented are what clients reviewed me. NodeJS, React, React Native, C#, Kotlin, Swift, Solidity, Rust, AI are my main tools to build your website, web application, and mobile application. We can start our working partnership at 1 of these 3 points: 1. A description of what you want me build for you. I will compose a proposal and a development plan based on your project description. 2. A UI design (in Figma, Canva, Photoshop,...) which has several screens of your website, web application, or mobile application. I will design the other screens for you. 3. An existing website, web application, or mobile application which was abandoned by your previous developer(s). I will pick up what we have and continue the development until we launch your product(s) to the market. Feel free to ask me any question. Even you won't hire me, I'm still happy to advise you and help you to get your project warm-up. Best regards, Nhan Nguyen.

👋 I am Aleksandr. 15 years in Xcode and Android Studio, 100+ apps shipped, and I still like the moment a build first runs on a real phone. ⭐ Mobile App Developer | Ios developer | Android developer | Flutter developer | React native Top Rated Plus | $647K+ earned | 109 jobs | 13,000+ hours | 15+ years | 8 industries I am a Mobile App Developer and CTO-level engineer, 15+ years, 100+ shipped apps, 109 closed contracts here. Native iOS in Swift, native Android in Kotlin, cross-platform Flutter and React native, plus the backend. 📱 Mobile app developer and mobile application developer, 100+ apps As a full-cycle Mobile App Developer I take products from architecture to store release, 100+ times. A mobile application developer who only writes screens leaves you an app nobody can extend. 1 change on the last build, startup work moved off the network path, moved 2 metrics: cold start down, day-1 activation up. I write the app and the API under it, then hand over code your team can pick up without a rewrite. 🍎 Ios developer and Swift ios developer, 3 Apple platforms As an Ios developer I build native Swift and SwiftUI apps for iPhone, iPad and Mac, 3 platforms, 1 codebase. A Swift ios developer earns the fee at App Store review: privacy manifests, permissions, in-app purchase rules, and the 4 rejection reasons behind most first failures. Your Ios app clears review as a launch date, not as a gamble. Your Ios app clears review as a launch date, not as a gamble. 🤖 Android developer, Android kotlin, Android developer kotlin, 3 device classes As an Android developer I build native Kotlin apps with Jetpack Compose, phone to foldable. Android kotlin work means Play policy, background limits and 3 device classes that break layouts drawn at 1 width. 2 vitals thresholds decide your listing, ANR and crash rate, and reworking background sync on the last build brought ANR back under both. An Android developer kotlin project ships with the release pipeline configured, not as a zip file. 🔀 Flutter developer and React native, 1 codebase, 2 stores As a Flutter developer I ship 1 codebase to both stores when 2 native builds are not worth it, and I say which case yours is. On the last one that decision cut the build budget roughly in half against two native apps. React native the same. If your team works with a Flutter mobile app developer India based or anywhere else, my code is documented for handover. 🧠 Ai mobile app developer, 1 cost model before the build As an Ai mobile app developer I ship LLM agents, computer vision, OCR, voice, and RAG inside real apps on the OpenAI and Claude APIs. 1 rule holds: I model the running cost per 1,000 users before we build, because AI features fail on the invoice sooner than on the code. Caching, prompt trimming, and a cheaper model for routine calls are the 3 levers, and on the last product they took the monthly bill down sharply. 🔎 Mobile app development code audit expert, 6 areas As a mobile app development code audit expert I review 6 areas: architecture, dependencies, memory and performance, real crash sources, security around tokens and stored data, and store review readiness. You get findings ranked by severity with an estimate against each, including the cases where the answer is a rewrite. 6 areas, findings ranked by severity, an estimate against each, and on the last audit most of the crashes traced back to a handful of those 6. 🛠 Full stack developer work under the app, 1 person instead of 3 The API, database and integrations are mine too: Node.js, REST and GraphQL, Firebase, Supabase. You hire 1 person instead of a Mobile App Developer plus a Full stack developer plus a Web developer, and the Web developer part of the job stops being a scheduling problem: the app never waits on someone else to finish an endpoint. 🇺🇦 Mobile app developer ukraine, 1 timezone question answered I work from Dnipro, so a mobile app developer ukraine search lands on my actual location. Full overlap with Europe, 6 to 7 hours with US East, 2 hour first response. 🎯 8 industries Fintech and crypto (ZimoCash, OpenWallet). Healthcare (EdEHR, MicroRec). Social at scale (Chingari, 50M+ downloads). Music (Music Coast, Flipside). Fitness with HealthKit and WatchOS (Regent, Swim Wise). On-demand booking (Ghasla, Vortex). Marketplaces (Photaka, Bliss Pool). Sports tech (NxtGen, Shred Level). ⚙️ How I work as your Mobile App Developer, 3 commitments Architecture and stack recommendation in the first conversation. Delivery in demo-able increments. Code your future team can read: 109 closed contracts here, several running for years on one product. React on the web side and React native on mobile share the same reasoning: pick the boring option that survives handover. 💌 Planning a new app, an MVP, or scaling an existing Ios app or Android build? 1 message is enough, and I walk you through how I would architect it. Hiring a Mobile App Developer is easier when you see the plan first.

🏆 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 (𝐓𝐨𝐩 7%) 🏆 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 Android Developer Kotlin and Swift IOS Developer focused on production-ready mobile products for B2B/B2C companies. I also build React Native Mobile applications when one shared codebase is the right technical choice. I cover Mobile app Development from architecture and UI to API integration, store release and support. Over 8+ years, I’ve worked on 80+ mobile apps with 2M+ downloads. 📊 Mobile track record ✔️ 8+ years in Mobile app Development ✔️ 80+ mobile app delivered - from scratch to product ✔️ 2M+ downloads across Mobile Kotlin app, Swift app, and React Native ✔️ 30+ five-star client reviews for Mobile app Development ✔️ Proved expert native Android, native iOS and React Native expertise for Mobile app ✔️ US, UK, EU and Australian clients ⚙️ Android side 8+ years - native and cross-platform mobile experience 50+ apps - delivery portfolio 2M+ downloads - Kotlin Mobile App Developer, Stack: Kotlin, Jetpack Compose, Coroutines, Flow, Room, WorkManager, Firebase Play Market - release and production support As an Android Developer Kotlin engineer, I build new Android apps, take over existing codebases and improve architecture, performance and stability. My kotlin developer work covers REST API integration, Google Maps, subscriptions, deep links, Bluetooth and background services. My android experience also includes BLE, location, Android TV, media and hardware integrations. I can join as an android developer on an existing android kotlin product or build a new android application. 🍏 iOS side 2M+ downloads - native Swift portfolio 30+ five-star reviews - Swift Mobile App Developer Stack: Swift, SwiftUI, UIKit, StoreKit, HealthKit App Store - release and production support As a Swift IOS Developer, I build ios app products with REST API, push notifications, analytics, maps and local storage. I can join as an ios developer to improve architecture, solve production issues or prepare an App Store release. My Swift IOS Developer experience covers healthcare, fitness, fintech, social, streaming, education and business products. My ios background also overlaps with ios game developer requirements. 📱 React Native side 2 platforms - one shared application layer 8+ years - Mobile app Development background Stack: React Native, TypeScript, Expo, Firebase, REST APIs Swift + android kotlin - native modules when required React Native Mobile is a strong option when ios and Android need to share product logic. I can build from scratch or continue an existing react native codebase with authentication, subscriptions, chat, maps, camera, push notifications and analytics. When platform-specific functionality is needed, I extend React Native Mobile with native modules. For web-connected products, I coordinate with a React Developer or Web Developer so react and mobile follow the same business logic. My Mobile app Development workflow starts with product scope, API, Figma and platform requirements. I define architecture, implement the mobile app, connect services, test and prepare releases. I also focus on mobile app design, permissions, error handling and native conventions. For larger products, I work with a Business Analyst, Full Stack Developer or full stack developer react node engineer. Some products also use react python services, so I keep backend APIs and mobile behavior aligned. I can join as a Mobile Developer on an existing product, as a mobile app developer on a new MVP, or as an Android Developer Kotlin or Swift IOS Developer when native development is the priority. I also work with teams that include a Flutter Developer, Web Developer, React Developer, Full Stack Developer or Business Analyst. If a company is comparing a Flutter Developer, React Native Mobile or bubble, I can help choose a realistic technical approach. 🚀 Delivery For a new product, Mobile app Development can be native or cross-platform depending on performance, integrations, roadmap and budget. Android may need an Android Developer Kotlin approach, Apple-focused products a Swift IOS Developer, while shared logic can make React Native Mobile the better choice. I can also take over an existing mobile app when the previous mobile app developer has left or the next release is blocked. This can include performance fixes, API changes, SDK updates, crashes and unfinished features. My mobile developer background covers 80+ delivered products, 2M+ downloads and 30+ five-star reviews. Whether the project needs kotlin, Swift, react native, a Flutter Developer or coordination with a Full Stack Developer, the goal stays the same - a maintainable product ready to grow. If you need an Android Developer Kotlin engineer, Swift IOS Developer, React Native Mobile specialist or experienced mobile app developer, I can take the product from technical planning through release and support. 📩 Let’s build something great.

🚀 Senior Android Kotlin Developer | Kotlin Multiplatform | Tech Lead with 6+ Years of Experience - I Build Scalable, Production-Ready Mobile Apps ✔️ ABOUT ME • 6+ years of commercial Android development and 20+ production Mobile Apps shipped across Fleet Management, Logistics, GPS Navigation, Ecommerce, Retail, and Location Tracking • 20+ production Mobile Apps • Applications with 1M+ downloads • 90+ modules delivered within one enterprise fleet/logistics platform built for scalability and long-term maintainability • Android Lead experience with ownership of architecture, technical decisions, code quality, development, and production delivery • 6+ Maps & Navigation SDKs used in production, including Google Maps, HERE SDK, Mapbox, and TomTom • 100% legacy Java → Kotlin migration completed in a production Ecommerce Mobile App, contributing to 30% active-user growth • Full Mobile App lifecycle: architecture, development, testing, optimization, Play Store release, monitoring, and maintenance 🚚 WHERE I DELIVER • As Android Developer Kotlin - 20+ native Android builds using Kotlin, Jetpack Compose, Coroutines, MVVM, MVI, and Clean Architecture • As Kotlin Multiplatform Developer - 4+ cross-platform apps with shared business logic across Android and iOS, reducing duplicated code and keeping platforms synchronized • As Mobile App Developer - end-to-end delivery across 20+ production applications from architecture to Play Store release • As GPS Navigation Developer - 6+ navigation applications with real-time location, routing, POIs, geofencing, and tracking • As Fleet Management Developer - 5+ fleet/logistics apps with driver workflows, asset management, GPS, NFC, and BLE • As Ecommerce Android Developer - 4+ ecommerce/retail apps with catalogs, loyalty, promotions, store locators, carts, and checkout • As Enterprise Android Developer - 90+ module architecture supporting complex business domains and large-scale requirements ⚙️ INDUSTRY IMPACT • Fleet & Logistics - 5+ production applications for drivers, vehicles, assets, tracking, and logistics workflows • GPS & Navigation - 6+ production map/navigation apps with real-time tracking, routing, POIs, and geofencing • Ecommerce & Retail - 4+ Mobile Apps covering catalogs, loyalty, promotions, store locations, carts, and retail workflows • Enterprise Platforms - 90+ module Android platform designed for complex business logic and long-term scalability • Location & Tracking - 3+ real-time tracking solutions using GPS, background location, geofencing, and maps • NFC & Bluetooth LE - 3+ production applications for asset registration, scanning, and device integrations • Indoor Navigation - 2+ indoor positioning/navigation applications using hybrid positioning • Audio & Media - 2+ media applications with background processing and real-time usage analytics 🏆 TYPES OF APPS I'VE BUILT • 20+ production Android Mobile Apps • Apps with 1M+ downloads • 6+ GPS-enabled Maps & Navigation apps • 5+ Fleet Management & Logistics apps • 4+ Ecommerce & Retail apps • 3+ GPS tracking and geolocation applications • 3+ NFC & Bluetooth LE applications • 2+ Indoor Navigation applications • 2+ Audio & Media applications • 1 enterprise Android platform with 90+ modules ⚒️ HOW I BUILD • 20+ production applications delivered across the complete Mobile App lifecycle • 90+ modules architected and maintained within an enterprise Android platform • Kotlin, Java, Kotlin Multiplatform - 6+ years of Android engineering experience • Jetpack Compose, Coroutines, Flow, MVVM, MVI, Clean Architecture, modularization • Retrofit, OkHttp, Room, Firebase, WebSockets, caching, offline-first architecture • Google Maps, HERE SDK, Mapbox, TomTom, GPS, Location Services, Geofencing - 6+ navigation/location technologies • NFC, Bluetooth LE, WorkManager, Media3 - hardware, background processing, and media integrations • Firebase Crashlytics, automated testing, CI/CD, Play Store - production reliability and release management ✨ WHY CLIENTS HIRE ME Clients hire me as their Android Kotlin Developer because the numbers speak for themselves: 6+ years of experience, 20+ production Mobile Apps, apps with 1M+ downloads, 90+ enterprise modules, 6+ Maps & Navigation SDKs, 5+ fleet/logistics applications, 4+ Ecommerce applications, and experience as an Android Lead. Whether you need an Android Developer Kotlin for a native build, a Kotlin Multiplatform Developer for shared mobile logic, a GPS/Navigation Developer for a location-heavy application, a Fleet Management Developer for a logistics platform, or a Mobile App Developer to take ownership of an existing product - I’m ready to contribute from day one. 📩 Let’s build something robust, scalable, and engineered to last. 🚀

✅ 𝟭𝟬𝟬% 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 ✅ 𝟐𝟎𝟎𝟎+ 𝐉𝐨𝐛𝐬 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞𝐝 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 Android Developer | Kotlin Developer | iOS Developer | Flutter Developer | Mobile Developer With 15+ years of experience as an Android developer and mobile developer, I help startups and businesses build scalable, high-performance mobile applications for Android and iOS platforms. As a senior Android developer, Kotlin developer, and mobile developer, I specialize in native Android development using Kotlin, Java, Jetpack Compose, and Android SDK technologies. I also work as a Flutter developer and collaborate on cross-platform mobile development projects requiring scalable architecture and modern UI/UX solutions. I have extensive experience building: * Android apps * iOS apps * Flutter apps * SaaS mobile platforms * enterprise mobile solutions * AI-powered mobile apps * MVP mobile applications * business automation apps Core Mobile Development Skills Android Developer / Kotlin Developer * Kotlin development * Java development * Android SDK * Jetpack Compose * RxJava * Android Studio * Material Design 3 * Firebase * Supabase * Google APIs * REST APIs * GraphQL * CI/CD pipelines iOS Developer / Flutter Developer * Flutter development * Cross-platform mobile development * iOS app collaboration * Responsive mobile UI * Mobile app architecture * API integrations * Payment gateway integrations * App Store & Google Play deployment UI/UX Focused Mobile Developer As a mobile developer and Android developer, I focus heavily on UI/UX quality and smooth mobile experiences. I work closely with Figma designs and build responsive, visually polished mobile applications optimized for performance, accessibility, and scalability. Performance Optimization I specialize in optimizing Android apps and mobile applications for: * memory management * UI rendering * API performance * smooth animations * high FPS performance * scalable backend communication My experience as a Kotlin developer and Android developer allows me to modernize legacy Android applications without requiring complete rewrites. # Why Clients Choose Me Clients hire me as an Android developer, mobile developer, Flutter developer, and Kotlin developer because I focus on: * long-term maintainable architecture * stable mobile app development * scalable mobile products * responsive communication * clean code * production-ready delivery I have successfully delivered mobile applications for startups, agencies, SaaS platforms, and enterprise businesses worldwide. If you’re looking for an experienced Android developer, iOS developer, Flutter developer, Kotlin developer, or mobile developer to build or scale your mobile product, let’s connect. # Keywords Android developer, mobile developer, Kotlin developer, Flutter developer, iOS developer, native Android developer, Android app developer, mobile app developer, Kotlin app developer, Flutter app developer, Android SDK, Jetpack Compose, Java developer, cross-platform developer, Firebase, Supabase, REST API, GraphQL, mobile UI/UX, mobile application development, Android Studio, Google APIs, payment gateway integration, CI/CD, scalable mobile applications, enterprise mobile development.

I build mobile and web apps that feel fast, reliable, and easy to use — whether native mobile apps (Kotlin for Android, Swift for iOS), cross-platform apps (Flutter, React Native), or modern web applications (React, Next.js, Node.js). My goal is to make your product run smoothly, scale easily, and grow with your business. With a Ph.D. in Computer Science and 10+ years of development experience, I've successfully delivered 90+ iOS, Android, and web applications on Upwork — including custom solutions for logistics, healthcare, booking, education, and business automation. 💡 What I Do Best - Cross-platform mobile app development with Flutter & React Native - Native Android app development using Kotlin - Native iOS app development using Swift - Web application development with React, Next.js, and Node.js - Design of clean, maintainable architecture with scalability in mind - Integration of REST APIs, Firebase, AWS, and Supabase - Support for offline mode, background services, and push notifications - Performance optimization, UX improvements, and deployment (App Store, Google Play, web hosting) 🧠 Why Clients Choose Me I combine strong technical expertise with a product mindset — not just delivering code, but building reliable, user-friendly products that support long-term growth. Whether you're building an MVP or scaling an existing application, I can help you choose the right tools and technology stack for both mobile and web. 💬 Let's Build Something Solid If you're looking for a developer who covers both mobile and web ecosystems, let's discuss your next project.

Are you looking for an expert Android Developer to build a high-performance, cross-platform mobile application? As a Senior Android Developer specializing in Kotlin Multiplatform (KMP) and Compose Multiplatform (CMP), I help businesses launch native-quality apps while reducing Mobile App Development costs by up to 50%. By sharing business logic across Android and iOS, I ensure your project is scalable, maintainable, and built for long-term success. 🚀 AI-Powered Android App Development Velocity I leverage an advanced AI-augmented workflow (Cursor, MCP, and Gemini/Claude) to accelerate the Mobile App Development lifecycle. This allows me to: - Code Faster: Automate boilerplate so I can focus on your app's unique architecture. - Increase Accuracy: Use AI-driven refactoring to ensure your Android App is bug-free. - Rapid Prototyping: Deliver production-ready MVPs in record time without sacrificing native performance. 🚀 Core Expertise To deliver world-class Mobile App Development, I utilize a cutting-edge tech stack: - Kotlin Multiplatform (KMP): Expert-level sharing of business logic, networking, and data layers. - Compose Multiplatform (CMP): Designing 100% shared, responsive UIs for Android, iOS, and Desktop. - Native Android: Jetpack Compose, Material 3, Coroutines, and Flow. - Architecture: MVI/MVVM Clean Architecture for scalable, testable codebases. - Smart Notifications: Implementing complex Push Notification strategies, including rich media alerts, deep-linking, and background data synchronization. 🛠️ Technical Stack - Languages: Kotlin, Java, Swift (Interop). - DI & Local Data: Koin, Hilt, SQLDelight, Room. - Networking: Ktor, OkHttp, REST, WebSockets, Apollo GraphQL. - Real-Time & Media: WebRTC (Audio/Video), Twilio, PJSIP, Jitsi, Firebase Services. - Hardware & IoT: Bluetooth (BLE), Geolocation, Maps, and Sensor integration. 💼 Why Choose Me as Your Lead Android Developer? - Top Rated Plus: 100% Job Success Rate and a veteran Android Developer of the Upwork platform. - End-to-End Delivery: From initial concept and architecture to successful Play Store/App Store deployment. - Proven Experience: Numerous commercial projects and a deep portfolio of open-source work on GitHub. - Scalable Solutions: Experience building complex features like WebRTC, Biometrics, and IoT integrations. Whether you need a Kotlin specialist to refactor an existing codebase or a Mobile App Developer to build a cross-platform solution from scratch, I provide the technical leadership your project deserves. 📩 Let’s build your next-gen mobile app. Click the "Invite to Job" button to discuss your requirements and see how my AI-augmented workflow can save you time and budget!