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Full-Stack AI Apps Developer | Agentic AI & LLM Workflows | Android | iOS | Kotlin Multiplatform | Python | Spring Boot I design and build AI Agent applications, LLM-powered workflows, and full-stack mobile apps end to end. From agent architecture and backend orchestration to native Android, iOS, and cross-platform delivery, I own the entire stack with zero handoff risk. 10+ years of engineering experience, 100% Job Success Score, Top Rated on Upwork. What I Build AI Agent apps and autonomous workflows (Java, Python, Kotlin) · LLM integrations (OpenAI, Claude, Gemini, GPT-4) · MCP (Model Context Protocol) server and client implementations · RAG pipelines with vector database retrieval · AI automation and multi-step agentic workflows · Custom AI assistants and chat apps with streaming responses · Native Android (Kotlin, Jetpack Compose) · Native iOS (Swift, SwiftUI) · Kotlin Multiplatform (KMP) and Compose Multiplatform · Spring Boot backends and microservices powering AI agent apps · E-commerce, healthcare, fintech, and real-time social apps with AI features built in AI & Agent Stack Languages: Java · Python · Kotlin · Swift Agent Frameworks: LangChain · LangChain4j · LangGraph · custom agent orchestration Protocols & Retrieval: MCP (Model Context Protocol) · RAG · Vector Databases (Pinecone, Weaviate, Chroma, pgvector) LLM Providers: OpenAI API · Anthropic Claude API · Google Gemini Workflow & Automation: Multi-agent pipelines, tool-calling agents, autonomous task execution, n8n-style automation logic built natively Backend: Spring Boot · Ktor · REST APIs · WebSockets · JWT Authentication Mobile: Kotlin Multiplatform · Jetpack Compose · SwiftUI · Room · SQLDelight · Firebase Delivered Results AI Agent Assistant App — KMP (Android + iOS) + Spring Boot backend, GPT-4 streaming, tool-calling agent layer, offline voice → 50K+ downloads · 4.7★ · 200K+ AI conversations/month RAG-Powered E-Commerce App — Compose Multiplatform, vector search product recommendations, Stripe, Spring Boot → $2M+ mobile revenue · 99.8% crash-free Healthcare AI Platform — HIPAA-compliant KMP + Spring Boot, AI-assisted triage agent, encrypted offline records → Deployed across 3 hospital networks Real-Time Agent-Driven Social App — WebSocket sync, Spring Boot, automated moderation agent → 10K concurrent users, sub-100ms delivery Why Clients Choose Me ✔ Full-stack ownership — AI agent logic, backend orchestration, mobile UI, deployment, all by one engineer ✔ Deep experience with MCP, RAG, and vector databases, not just prompt wrapping ✔ Production-grade agent workflows in Java and Python, integrated into real mobile and backend systems ✔ 100% Job Success Score · Top Rated on Upwork ✔ Fast, proactive communication and a product-focused approach Send me an invite or message. I'll respond within a few hours with a clear technical approach for your AI agent or mobile project. Muhammad Hassan Full-Stack AI Apps Developer | Agentic AI & LLM Workflows | Android | iOS | Kotlin Multiplatform | Python | Spring Boot

Looking to build a fast, scalable E-commerce & Health & Fitness apps that users actually love to use? I’m Inam Ullah Khan, an Android Developer with 3+ years of experience building and launching production-ready mobile apps. I specialize in turning ideas into high-performance applications—from SaaS platforms to E-commerce, Health & Fitness apps, and with AI Integration. 🚀 Core Android Development Services: 📌 Native Android App Development 🔹 Expert in Kotlin, Java, Android SDK, Jetpack Compose, View System 🔹 Responsive UIs across all screen sizes using ConstraintLayout, MotionLayout, Compose 🔹 Modular architecture (MVVM, Clean Architecture, MVI, VIPER) 🔹 Advanced state handling with LiveData, Coroutines, Flow, RxJava 🔹 CameraX, MediaCodec, ExoPlayer for media-heavy apps 🔹 Full device compatibility from Android 5.0+ through latest Android 14 📌 Android Security & Low-Level Optimization 🔹 Obfuscation, code hardening, and NDK-level protection 🔹 Reverse engineering mitigation via Frida/Root detection 🔹 Low-level optimization with ARM NEON, RenderScript, JNI, and custom kernels 🔹 SELinux customization for hardened AOSP builds 🔹 Hardware integration with sensors, gyroscopes, accelerometers, and BLE 📌 Multimedia, Games & Streaming 🔹 Real-time video/audio with FFmpeg, OpenGL, Vulkan, MediaCodec 🔹 Game engines: Unity3D, LibGDX, custom OpenGL renderers 🔹 Augmented Reality with ARCore, face tracking, 3D overlays 🔹 Advanced drawing tools, canvas-based animation, real-time filters 📌 Backend Integration & Architecture 🔹 REST, GraphQL, gRPC, WebSockets, Firebase, and custom socket protocols 🔹 Secure data sync, push notifications (FCM), and analytics (Firebase, Amplitude) 🔹 CI/CD pipelines using Jenkins, Bitrise, GitHub Actions, and custom Gradle workflows 🔹 Offline sync and caching strategies for resilient performance 📌 Scalable Architecture & Cross-Platform 🔹 Kotlin Multiplatform, Clean Architecture, modularized multi-feature apps 🔹 Deep understanding of Android App Bundles, Play Feature Delivery, and Instant Apps 🔹 Flutter experience for select cross-platform needs (Dart/Flutter SDK) 📌 Database & Networking 🔹 SQLite, Room, Realm, SQLDelight, Firebase Realtime/Firestore 🔹 JSON parsing with Gson, Moshi, org.json 🔹 API integration using Retrofit, OkHttp, Apollo Client 🛠 Tech Stack Languages: Kotlin (Expert), Java Frameworks: Android SDK, Jetpack Compose, Coroutines, Flow Backend & Data: Retrofit, Room Database, Firebase Architecture: MVVM, Clean Architecture, Dagger/Hilt 🤝 Why Clients Work With Me Clear and fast communication Daily progress updates On-time delivery with clean, maintainable code Post-launch support and bug fixing 📩 Let’s Get Started Send me a message with your idea, and I’ll provide a clear technical plan to bring it to life.

✅ 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

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.

"Habib was a wonderful developer who has very strong expertise among the Android & iOS development stack... able to get results out after just one week of development." — Recent US Client I am a Senior Mobile Engineer specializing in high-performance Android and iOS ecosystems—built not just as software, but as scalable business tools designed to solve complex operational challenges. With 8 years of hands-on experience architecting applications, leading cross-functional squads, and managing full-lifecycle deployments, I turn complex technical challenges into streamlined mobile products. My focus is on developing robust business solutions using a modern, AI-accelerated workflow. I leverage AI-driven development tools (like Cursor and Copilot) to ensure rapid delivery cycles and high-speed execution without ever compromising on the meticulous, detail-oriented quality a Senior-level project requires. 🚀 Core Competencies & Deep-Tech Pillars While many can build a simple user interface, I specialize in architecting "Large-Scale" applications (supporting 5M+ users) across four major industry pillars: 📍 Precision Navigation & GIS Mapping: Advanced implementation of Mapbox SDK, Google Maps API, and QGIS for floor-plan digitization (Raster-to-Vector) and custom indoor pathfinding/routing logic. 🚕 Ride-Hailing & Logistics Ecosystems: Deep expertise in real-time location tracking, background services with strict battery optimization, and complex state management for driver/passenger synchronization. 📱 High-Traffic Platforms & Streaming: Revitalizing high-traffic video communication and social feeds (1M+ downloads), optimizing UI rendering architectures to achieve up to 80% smoother scrolling. 🔒 App Security & Production Hardening: Senior-level implementation of the Play Integrity API, SQL Injection mitigation, biometrics, advanced cryptography, and app obfuscation to protect enterprise assets. 📦 End-to-End Release Management (Play Store & App Store)I don't just write code; I take full ownership of the rollout strategy. I am fully experienced in managing cross-platform releases: * Apple App Store: Directing feature parity on iOS codebases, ensuring compliance with Apple's review guidelines, and managing deployment lifecycles. * Google Play Store: Handling strict API target upgrades (API 35+), managing background location justifications, A/B testing, and staged rollouts. 🛠 The Technical Stack (Modern Standards)* Native Frameworks: Jetpack Compose (Material 3), Kotlin Coroutines/Flow, Hilt/Dagger, Swift, UIKit, Room, and Paging 3. Cross-Platform: Kotlin Multiplatform (KMP) to share core business logic, drastically reducing long-term maintenance overhead. Enterprise Tools: CI/CD Pipelines (GitHub Actions, Bitrise, Jenkins), Git, Jira, and Agile/Scrum delivery. By combining this deep-domain experience with an AI-accelerated development workflow, I deliver these complex systems in significantly shorter timelines than traditional agencies. I don't just build apps; I build the future of your business. Let’s connect and discuss how we can turn your mobile vision into a high-rated production reality.

🌟 About Me Hi there! I’m Bilal Nasir, a dedicated Android Developer (Kotlin + Java) with 5 years of hands-on experience in crafting high-quality mobile apps that are fast, stable, and built with care. I’m passionate about turning ideas into apps that users genuinely enjoy apps that look great, run smoothly, and perform flawlessly. Whether it’s building something from scratch or enhancing an existing project, I bring a mix of creativity and strong technical expertise to the table. I focus on writing clean, modular, and scalable code following modern Android standards like MVVM, Hilt, and Jetpack Compose to ensure your app is future-proof. 💡 What I Can Deliver ✅ Full Android App Development in Kotlin & Java ✅ Modern UI using Jetpack Compose and Material Design 3 ✅ Architecture patterns – MVVM, Clean Architecture, Repository Pattern ✅ API integration using Retrofit + Coroutines ✅ Offline storage with Room Database and DataStore ✅ Firebase services – Authentication, Push Notifications, Analytics, Firestore, etc. ✅ In-app billing and AdMob monetization setup ✅ AI and server integrations (RunPod, Flask, etc.) ✅ Play Store deployment, version control (Git), and long-term maintenance I make sure every project I take on is not just functional but polished, reliable, and optimized for performance and scalability. 📱 Apps I’ve Built & Published Here are some of my published apps that have earned thousands of downloads and positive user feedback on the Play Store: 🌟 Photo Editor / Filter (1M+ Downloads) A powerful photo editing app with real-time filters, effects, and beautification tools designed for fast, offline image processing and a clean user experience. 🌟 Camera Scan - Languages Translator (1M+ Downloads) An all-in-one OCR and translation app that lets users scan text from images and instantly translate it into multiple languages with voice and speech support. 🌟 Flight Tracker - Flight Radar (500K+ Downloads) Live flight tracking app providing real-time flight status, route maps, and airport information using advance API integrations. 🌟 Maps & GPS App (1M+ Downloads) A navigation and location-tracking app that helps users find routes, track movement, and explore nearby places. 🌟 PDF Reader - All PDF Viewer (100K+ Downloads) Lightweight, fast, and elegant PDF viewer that allows users to open, browse, and manage documents with smooth performance. 🌟 AI Haircut (500+ Downloads) An AI-powered hairstyle transformation app that generates realistic haircut previews using user-uploaded photos. 🌟 Speed Cameras Detector (500K+ Downloads) A smart speed detection app that alerts drivers to nearby speed cameras and speed limits using GPS tracking and background services. 🌟 Qibla Compass - Muslim Prayers Alert (100K+ Downloads) An accurate Qibla direction and prayer time app with compass functionality, daily prayer notifications, and clean UI for Muslim users. Each app reflects my passion for delivering clean, functional, and user-centered mobile experiences. 🚀 Why Clients Choose Me ✅ 5 years of proven Android development experience ✅ Strong understanding of app performance and clean architecture ✅ Smooth and open communication throughout every project ✅ Focused on delivering on time, every time ✅ Real-world results, published, monetized, and scalable apps Whether you need a complete Android app from scratch, backend integration, or app optimization, I’m here to build something powerful together.