I build production Android apps that ship and stay shipped. Arcadia, my AI-powered game tracker, took 1st place in a national Egyptian tech initiative out of 120,000+ participants and is live on the Play Store. FlexPing, built for a UK client serving Amazon Flex drivers, is live on Google Play and maintained by me in production today. My core stack is Kotlin, Jetpack Compose, MVVM, Coroutines, REST APIs, and Firebase. I'm also building a multi-tenant restaurant SaaS in Kotlin Multiplatform, with iOS and Android sharing one codebase. Shipping the UI is the easy part. I own the systems behind it: clean architecture, backend and Firebase integration, and the performance work most projects skip, baseline profiles, memory profiling, app-size reduction. That's the difference between an app that demos well and one that survives real users. I work best on long-term and contract-to-hire roles where I own a meaningful part of the codebase, not just close tickets. If you need an Android developer who ships and owns the outcome, message me.

Android App Developer with 5+ years of experience building scalable, user-friendly, and high-performance native Android applications. I help startups, businesses, and entrepreneurs turn app ideas into real products — from MVP development to bug fixing, feature upgrades, API integration, Firebase setup, and Play Store publishing. ## What I Can Help You With: ✔ Native Android App Development (Java / Kotlin) ✔ Firebase Authentication / Database / Notifications ✔ REST API Integration ✔ UI Development from Figma / XD Designs ✔ Bug Fixing & Crash Resolution ✔ Performance Optimization ✔ Payment Gateway Integration ✔ Play Store Submission & Updates ✔ Ongoing App Maintenance ## Why Clients Hire Me: ✔ Clean, maintainable code ✔ Fast and clear communication ✔ Reliable delivery timelines ✔ Attention to UI details ✔ Long-term support after delivery If you need a dependable Android developer ho understands both business goals and technical execution, I’d be happy to discuss your project.

Hi, I’m a mobile app developer with 8+ years of experience building Android, iOS, and cross-platform apps (Flutter / React Native). I’ve worked on apps from scratch, rebuilds, and ongoing maintenance, and I’m comfortable working inside existing systems with clear requirements. What I work on - Kotlin (Android) and Swift (iOS) - Flutter / React Native apps - Firebase & Supabase (Auth, Database, Storage, Notifications) - BLE / Bluetooth apps (IoT devices, wearables, real-time communication) - Barcode scanning & OCR (text recognition from images, document scanning) - API integration (REST APIs, real-time APIs, third-party SDKs) - AI-driven features (data-based recommendations, smart workflows) - App performance optimization and bug fixing - App Store & Google Play deployment (including updates & fixes) Project experience - BLE-based dog training app (real-time command system with device sync) - Carpool app with chat, live location tracking, and ride matching - Food & discovery apps with recommendation-based logic - Inspection app with OCR + image upload for structured data capture - Barcode-based apps for tracking, inventory, and data entry - WearOS & WatchOS apps connected with smart devices - Habit tracking iOS app with CoreData and iCloud sync How I work - Clean and structured code (easy to maintain and scale) - Regular commits and progress updates - Clear communication (no overpromising) - Comfortable working in your GitHub and backend setup - Can work independently with defined scope I can help with: - Building a new app from scratch - Rebuilding an existing app cleanly - Fixing bugs and improving performance - Adding new features to your current app If you’re looking for someone reliable who understands both technical work and practical delivery, I can help get your app done properly.

I create amazing websites and apps using web technologies to meet your needs and making your business stand out. Leveraging web technologies to create: * Scratch Websites in HTML, CSS and Javascript from mockup designs in Figma, Adobe XD and Zeplin * Mobile Apps in Native Android, Ionic or React Native with highly intuitive design and user experience * API development to meet any need or requirements in NODE JS or PHP Proven experience in the web and mobile technology in industries such as: Finance, Health and Logistics etc.

I’m an Android App Developer with a strong command of Kotlin, Java, and Jetpack Compose, passionate about building high-performance, scalable, and secure mobile applications. With a deep understanding of Android architecture components, I specialize in turning ideas into user-friendly and production-ready apps. --- **Android Development** Kotlin, Java, Jetpack Compose, XML Android SDK & Material Design Scoped Storage & Background Work (WorkManager) --- **API & Database Integration** RESTful APIs using Retrofit JSON, XML parsing Room (SQLite), MySQL Firebase: Realtime Database, Firestore, Storage, Authentication, Cloud Messaging ,push notification --- **Architecture & Dependency Injection** Clean Architecture MVVM, MVI Design Patterns Dagger Hilt, Manual DI Handler Design Pattern --- **Tools & Workflow** GitHub, Version Control (Git) & CI/CD Basics Debugging, Crashlytics, Remote Config --- What I Offer Robust & Maintainable Code: Following modern Android best practices. Firebase Integration: Analytics, push notifications, crash reports, and real-time updates. Google Play Compliance: Fix policy-related issues to meet publishing guidelines. Scalable & User-Friendly UI: With Jetpack Compose & XML layouts. --- Why Work With Me Transparent communication & regular updates Deadline-driven and focused on quality Cost-effective yet exceptionally professional outcomes. Continuously learning to keep up with technological advancements.

Building a ride hailing or delivery app is much more than putting a map on the screen. Real-time driver tracking, live trip updates, dispatching, payments, push notifications, chat, location accuracy, offline handling, and scaling to thousands of concurrent users all have to work together seamlessly. That's what I specialize in. I build production-ready ride hailing, taxi booking, delivery, courier, logistics, and mobility apps for iOS and Android using Kotlin Multiplatform, allowing you to launch both platforms without maintaining two separate codebases. I've spent 5+ years building mobile products used by millions of users, including real-time location systems, VoIP, AI-powered features, delivery platforms, and high-scale consumer applications. Building apps for iOS and Android doesn't have to mean two budgets, two timelines, and twice as many things that can break. I specialize in Kotlin Multiplatform and Compose Multiplatform, writing your app's logic once and sharing as much or as little UI as your product needs, while both platforms stay fully native where it matters. Your iOS users get a real iOS app. Your Android users get a real Android app. One codebase, both platforms, features shipping simultaneously. When your product needs AI, I can integrate it seamlessly into your mobile app. Whether it's an in-app assistant, document processing, semantic search, or on-device inference, I build solutions that balance performance, privacy, and cost. From MediaPipe, TensorFlow Lite, Core ML, and ONNX Runtime to OpenAI, Claude, and Gemini, I choose the right approach for your product instead of forcing one technology everywhere. Building a shared codebase is the easy part. Building one where iOS feels just as native as Android is where experience matters. I specialize in Kotlin Multiplatform architectures that share business logic while integrating cleanly with native platform APIs, so your team can ship features faster without compromising either platform. A great fit if you're building a new mobile product, modernizing separate iOS and Android apps, or developing a real-time platform such as ride hailing, delivery, logistics, or another location-based service. What I build - Ride hailing & taxi booking apps - Food delivery & courier platforms - Logistics & fleet management apps - Real-time GPS tracking & live location - Maps, routing & ETA calculation - Driver, customer & admin applications - Push notifications, chat & real-time updates - Payment gateway & wallet integration - AI assistants & smart search - On-device AI & cloud LLM integration - Kotlin Multiplatform architecture for iOS & Android AI Capabilities: RAG pipelines - context-aware retrieval over private knowledge bases, with hybrid local/cloud embeddings On-device LLMs - quantized models via MediaPipe, TF Lite, Core ML, ONNX Runtime LLM integration - OpenAI, Anthropic Claude, Gemini, plus self-hosted LLaMA and Mistral Vector search - Pinecone, Weaviate, ChromaDB, and on-device alternatives AI agents - function-calling, tool use, memory, multi-step reasoning Fine-tuning & prompt engineering for domain-specific tasks Mobile foundation Native Android (Kotlin, Java, Jetpack Compose) and iOS, plus Kotlin Multiplatform (KMP/KMM), Compose Multiplatform, and Flutter. Backend in Spring Boot when AI features need server support. Architecture: Clean Architecture, MVVM/MVI, modularization, TDD. Code an enterprise team can take over without a rewrite. Domains I've shipped in - Ride Hailing/Taxi Booking - Blockchain & Web3 mobile apps - VoIP & real-time communication - Food Delivery - Ecommerce - Mobile security & anti-theft - AI-powered consumer and enterprise apps How to start Send me a paragraph about your project. Within 1 hour I'll reply with a realistic scope estimate, the architectural approach I'd take, and a flag for anything that looks harder than it sounds.

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

✅𝐀𝐧𝐝𝐫𝐨𝐢𝐝 & 𝐢𝐎𝐒 𝐄𝐱𝐩𝐞𝐫𝐭 ✅𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 ✅ 𝟔 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 ✅$50𝐊+ 𝐄𝐚𝐫𝐧𝐢𝐧𝐠𝐬 🚀 Skilled mobile application developer with 6+ years of expertise in Swift, Swift UI, Kotlin, Java, Flutter(Dart), React Native ➡️ 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐤𝐢𝐥𝐥𝐬 💡𝐢𝐎𝐒 & 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Core Data, Core Graphics, Core ML, ARKit, AVKit, UIKit, AVFoundation, ARCore, Android SDK, Retrofit, Firebase, Google Cloud, Google Maps API, Kotlin Multiplatform (KMP) for sharing code across Android, iOS, and other platforms 📱𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Swift, SwiftUI, Kotlin, Java, Flutter(Dart), React Native 🌐𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬: Social Media APIs, Messaging Engines (XMPP, MQTT), Geo-location, Google Maps 🛠️𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐓𝐞𝐜𝐡: OpenCV, Sensors, Bluetooth (LE), Text-to-Speech 🚀𝐓𝐨𝐨𝐥𝐬 & 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭: CI Integration, Fastlane, Google Play & App Store Submission 📋𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Trello, Jira, Slack, Asana ➡️𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐎𝐯𝐞𝐫𝐯𝐢𝐞𝐰: 🛒 E-commerce Applications 🚗 Transport Applications 🏥Medical Applications 📱 Social Media Applications 🛠️Utility Applications 🏭 Industry-Specific Applications 🍔 Food and Tourism Solutions 💳 Fintech Applications 📦 On-Demand Service Apps 𝐏𝐫𝐨𝐯𝐞𝐧 𝐑𝐞𝐬𝐮𝐥𝐭𝐬: ✅ Developed apps with 𝟏𝟎,𝟎𝟎𝟎+ monthly active users. ✅ Helped startups gain early adopters for their MVP using TestFlight. 💬 𝐋𝐞𝐭’𝐬 𝐜𝐡𝐚𝐭 𝐫𝐢𝐠𝐡𝐭 𝐧𝐨𝐰! 😊 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: #MobileAppDevelopment #iOSDevelopment #AndroidDevelopment #CrossPlatformDevelopment #Flutter #ReactNative #Swift #SwiftUI #Kotlin #Java #Dart #APIIntegration #RESTAPIs #GraphQL #Firebase #Supabase #UIUXDesign #MobileUIDesign #AppArchitecture #CleanArchitecture #MVVM #MVPDevelopment #AgileDevelopment #AppDeployment #AppStoreSubmission #GooglePlayDeployment #PerformanceOptimization #Debugging #VersionControl #Git #CICD #Fastlane #ThirdPartyIntegrations #PaymentGatewayIntegration #PushNotifications #RealTimeFeatures #ChatIntegration #LocationServices #GoogleMapsAPI #ScalableApplications #CodeOptimization #Testing #AppMaintenance

Top Rated Plus Android & Cross-Platform Engineer specializing in high-performance mobile architectures, custom Android TV ecosystems, and hardware-integrated applications. Over 4,200+ hours delivered on Upwork with a 97% success rate scaling platforms for startups and enterprise brands. As highlighted by Upwork's platform summary below, I specialize in solving complex engineering challenges—from offline voice-driven systems (VOSK) to low-latency BLE healthcare hardware syncs. --- 💼 CORE EXPERTISE • Android TV, FireTV, & Google TV App Architecture • Cross-Platform Mobile Apps (Flutter & Dart) • Native Mobile Development (Kotlin & Jetpack Compose) • BLE, IoT, & Real-Time Hardware Connectivity • Media Streaming, ExoPlayer Integration, & VOD/OTT Systems 🛠️ TECHNICAL TECH STACK • Languages: Kotlin, Java, Flutter, Dart • Architecture: MVVM, Clean Architecture, Coroutines, Flow, StateFlow, Hilt • Network & Data: Retrofit, REST APIs, WebSockets, Room Database, Firebase • Streaming & OS: ExoPlayer, WebRTC, Agora SDK, Android SDK, Android TV API 🚀 WHY CLIENTS CHOOSE ME • 8+ Years of Proven Industry Experience • Clean, Maintainable, and Production-Ready Code • 100% Reliable Communication & Fast Delivery Timeframes • Deep Expertise with Google Play Store Deployment & Compliance Let's discuss your application requirements. Click the green "Invite to Job" button to start a conversation about your project scope.

🏗️ Mobile Architecture, 🧬 Kotlin Multiplatform (KMP), 📱 Kotlin Development, 📱 Swift Development, 🤖 AOSP Customization, 🔒 MDM & Kiosk Mode, ☎️ TelecomManager & CallKit, 📶 Hardware Integration, 💼 Mobile Security, 🤖 n8n Workflow Automation, 🚀 CI/CD Automation Senior Mobile Architect specializing in Kotlin Multiplatform (KMP), native iOS/Android, and low-level AOSP engineering. Proven track record scaling systems past a 500k+ download milestone. Expert in Kiosk mode, custom launchers, and advanced telephony handling. I build production-grade mobile architecture for high-scale products and specialized enterprise hardware. With a proven track record of scaling consumer software past a 500,000+ download milestone on the app stores, I specialize in maximizing native performance, low-level OS customization, and secure architecture. No cross-platform compromises. No generic templates. Just bulletproof, metric-driven engineering engineered to handle complex OS constraints and enterprise scale. 🏗️ Core Architecture & Multiplatform Focus Kotlin Multiplatform (KMP):Strategic implementation of shared business logic, state management, and data sync layers without sacrificing native UI responsiveness. Native iOS Ecosystem: Advanced SwiftUI, UIKit, Combine frameworks, Core Data, and secure native execution. Native Android Ecosystem:Modern Jetpack Compose, Kotlin Coroutines, Room Database, and optimized asynchronous WorkManager pipelines. Infrastructure & Workflow Automation: Custom design of robust enterprise backend integrations (REST, GraphQL) paired with complex, self-hosted n8n automation pipelines to streamline lead-to-client infrastructure. 🔧 System-Level & Hardware Specialization AOSP & Custom Launchers: Deep Android Open Source Project engineering, building modified OS images, custom launchers, and secure background usage state sequence verification. MDM & Kiosk Solutions: Hardened device management solutions and tamper-proof environments for dedicated hardware terminals and POS systems. Advanced Telephony & Call Handling:Specialized execution of native call screening, background protection services, and core OS integration utilizing Android's TelecomManager and iOS's CallKit frameworks. Hardware Interfacing:Real-time data streaming and connectivity via BLE (Bluetooth Low Energy), NFC, and custom USB-C peripherals. 📈 Scale, Security & Hardening Proven Production Scale: Successfully engineered, deployed, and scaled mobile products past a 500k+ user milestone with flawless runtime stability. Security Architecture:End-to-end security hardening including SSL pinning, jailbreak/root detection, automated biometric authentication flows, and encrypted local storage layers. Clean Lifecycle Velocity: Dedicated to maintainable code bases, utilizing automated CI/CD workflows (GitHub Actions, Fastlane) and strict adherence to native API design guidelines. 🤝 How We Collaborate Architecture First: Comprehensive technical and architectural alignment before writing the first line of code to eliminate technical debt. Enterprise Reliability: Pristine platform execution, proactive communication, and transparent timeline management. Ideal for enterprise teams requiring deep hardware/telephony integration, legacy app migrations to native/KMP architecture, or high-scale consumer products demanding elite performance optimization. Let's build a reliable, high-value solution for your infrastructure. Send a message with your project scope, and I will deliver a targeted technical approach within 24 hours.