"I can unreservedly recommend Hussein for the development and support of Android apps. Over the last 2 years, Hussein has delivered amazing work, providing everything we need for Android, Android Auto, and Android Automotive. I have been impressed with how quickly he has supported complex challenges including Mapbox integration, Android Automotive, cloud-based comms, SignalR, and MQTT. 100% recommended." - Client, UK Transport Authority I'm an Android engineer with 4+ years across product companies and freelance work. My specialty is apps that talk to hardware (BLE devices, car head units, sensors), but my day job is production Android at scale, so you get both. 🛠️ WHAT I'VE ACTUALLY SHIPPED 🛒 E-commerce (current role at a software studio): - Cut checkout loading from 12-15s to 2-4s (83% faster) by reworking GraphQL queries, caching, and business logic - Led full migration from XML to Jetpack Compose with MVI, reviewing code and supervising the team - Integrated Payfort and Paymob payment gateways, built Loyalty and Gift Card systems with animated Compose Canvas UI 🚗 Android Automotive & Auto (2 years, UK Transport Authority, UK): - In-vehicle warning app running on a Polestar head unit, tested at Warwick University, covered in industry press (LCRIG) - Road safety and city safety apps: Mapbox, Google Maps, real-time location, MQTT, SignalR - Trained a TensorFlow Lite model with CameraX detecting vehicles for driver safety scoring 📡 BLE & Embedded (my own product, end to end): - Designed a BLE wearable from zero: custom 4-layer PCB (nRF52840, PMIC, capacitive touch), Zephyr firmware with OTA firmware updates over BLE, a Compose Multiplatform (KMP) companion app, and a Ktor backend behind it. I debug every layer: sensor, firmware, app, and server. 🔒 Security & hardened apps: - Built a 7-layer protection system for a client app: Talsec RASP, custom C++ native module for Frida detection, hardware-backed AES-256 with Android Keystore, SQLCipher, ProGuard/R8, string encryption, certificate pinning - Secure chat app: message and file encryption, voice recording, CameraX capture, root detection, USB debugging prevention. Cut its CPU usage by 30% and memory by 80% through profiling - System-level call/SMS handling with CallScreeningService inside Android's 5-second response window ☁️ Backend & self-hosted: - Ktor REST APIs with MySQL, Exposed, and Docker, sharing a Kotlin module between server and app for type-safe contracts - Device telemetry (GPS with 5-tier fallback, signal strength, battery), OTA APK updates, FCM remote commands and Remote Config - I run my own self-hosted infrastructure (Docker, Linux, reverse proxies, monitoring), so I'm comfortable deploying and maintaining what I build 📱 MY OWN PRODUCT - GPA Manager on Google Play: 16K+ downloads across 80+ universities, live Firebase backend Plus 20 completed Upwork contracts: in-app purchases and subscriptions, survivable background services, GPS tracking, offline data capture, SDK migrations. 🤝 HOW I WORK GitHub access from day one so the code is yours at every step. Honest estimates before we start, clear updates while we work, and two weeks of free support after delivery. I usually reply within a few hours. If you're building something with a device, a car screen, or just need an Android app done properly, message me. The first consultation is free: tell me about your project and I'll give you my honest take on the approach, effort, and risks before you spend anything.

AI-Powered Mobile Engineer • Flutter & Native iOS/Android expert • Full-stack development with Node.js, Python, PHP & Firebase • Scalable backend systems on AWS & Kubernetes What I Build • Mobile apps (Flutter & Native) • SaaS platforms & MVPs • AI-powered applications & chatbots • Cloud-native scalable architectures Integrations & Technologies Flutter • Swift • Kotlin • Node.js • Python • Firebase • AWS • Kubernetes • MongoDB • PostgreSQL • REST APIs • AppsFlyer • Firebase Analytics • Payment & Chat SDKs What You Can Expect • Clean, scalable, production-ready systems • Fast execution with strong architecture decisions • Proactive communication & regular updates • Reliable long-term technical partnership Share your product idea, bottleneck, or existing app challenges, I’ll help with a structured roadmap, technical direction, and execution plan. ---------------------------------------------------------- Experience Across Industries • Healthcare & Fitness • FinTech & eCommerce • Ride-Hailing & Food Delivery • Dating & Matrimonial • Education & Gaming • IoT & BLE Applications

I am a Senior Android Engineer with extensive experience delivering high-quality, production-ready mobile applications. My main focus is native Android development with Kotlin and Jetpack Compose, where I’ve built and maintained apps used by thousands to millions of users. In addition, I have successfully built and delivered cross-platform apps in Flutter and React Native, taking projects from concept and development through to production and market release. This allows me to tackle both native Android and cross-platform projects end-to-end, while maintaining deep expertise in Android. With 21,000+ hours on Upwork and top-rated feedback, I have proven the ability to deliver results efficiently, reliably, and to specification, whether it’s a long-term Android contract or a cross-platform project. If you’re looking for a senior mobile engineer who can own Android projects and also deliver cross-platform apps from scratch to market, I can help your app succeed quickly and efficiently.

AVAILABLE NOW - I can start working on your Android app today I’m an Android developer with 3+ years of real-world experience building and maintaining native Android apps that are clean, stable, and easy to use. I work fast, communicate clearly, and take responsibility for the code I write. If something breaks, I fix it. If something can be done better, I’ll tell you. What I handle on Android projects ✅ Native Android app development – idea → UI → logic → testing ✅ Clean architecture – MVVM, readable and maintainable code ✅ Modern Android tools – Kotlin, Jetpack Compose, XML ✅ Bug fixes & app improvements – crashes, UI issues, performance problems ✅ API integration – REST APIs, Firebase, data handling What you can expect • Clear communication and regular updates • On-time delivery • Clean, reviewed code • No disappearing mid-project Tech I use daily Kotlin • Java • Jetpack Compose • XML • MVVM • Android SDK • Firebase • REST APIs • Git If you need a developer who gets the job done without overcomplicating things, I’m ready to help. Send me a message and let’s talk about your Android app.

I am computer science graduate. Perfection is what I always strive for! I am a well-versed Technical Expert possessing 12+ years experience with mostly mobile and Backend technologies i.e Android, iOS , React Native, Java, Kotlin, Swift, Micro Services, Sprint Boot, MVVM, AWS , AI/ML and database technologies I have a great passion for cutting-edge technologies and learning new things and continuous growth. I am always committed to on-time delivery of projects with high quality. I have good communication skills. Looking forward to work with you.

🚀 𝐓𝐡𝐞 𝐀𝐩𝐩 𝐒𝐭𝐨𝐫𝐞 𝐢𝐬 𝐜𝐫𝐨𝐰𝐝𝐞𝐝, 𝐚𝐧𝐝 𝐚𝐯𝐞𝐫𝐚𝐠𝐞 𝐝𝐞𝐬𝐢𝐠𝐧 𝐣𝐮𝐬𝐭 𝐝𝐨𝐞𝐬𝐧’𝐭 𝐜𝐮𝐭 𝐢𝐭 𝐚𝐧𝐲𝐦𝐨𝐫𝐞. Whether it’s a mobile app, a macOS desktop tool, or a UI that converts users demand performance, beauty, and seamless experience. That’s where I come in. I'm a 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐦𝐚𝐜𝐎𝐒 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 + 𝐔𝐈/𝐔𝐗 𝐃𝐞𝐬𝐢𝐠𝐧𝐞𝐫 with a proven record of building high-performance apps and clean, conversion-driven designs. I specialize in delivering Swift-powered solutions that combine sleek front-ends with rock-solid back-end logic. 🔧 𝐖𝐡𝐚𝐭 𝐈 𝐎𝐟𝐟𝐞𝐫: ✔ iOS Development (Swift, SwiftUI, Combine, CoreData) ✔ macOS Desktop App Development using native frameworks & APIs ✔ MVVM Architecture for scalable, clean codebases ✔ Firebase Integration (Realtime DB, Auth, Cloud Messaging, Firestore) ✔ Custom PDF Workflows with PDFKit ✔ Smooth Lottie Animations for next-level UI ✔ API Integration + JSON Serialization with precision ✔ UI/UX Design in Figma – From wireframe to final screen ✔ Responsive Design for all screen sizes (Mobile + Desktop) ✔ Landing Pages & Web UI that convert visitors into users 💡 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞: ✔ 6+ years of experience across mobile, desktop & UI design ✔ Cross-disciplinary skills I don’t just code, I design with purpose ✔ Clean, modular code that’s easy to scale and maintain ✔ Great communication, deadline-oriented, and focused on ROI ✔ Solutions built around real user behavior not just trends 🏆 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: 🔗 𝐏𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨 𝟏 – 𝐒𝐰𝐢𝐟𝐭𝐔𝐈 + 𝐏𝐃𝐅𝐊𝐢𝐭 𝐀𝐩𝐩 𝐰𝐢𝐭𝐡 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞 𝐒𝐲𝐧𝐜 Developed a cross-platform app (iOS + macOS) using SwiftUI and PDFKit, integrated with Firebase for real-time data sync and custom PDF export workflows. 🔗 𝐏𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨 𝟐 – 𝐦𝐚𝐜𝐎𝐒 𝐃𝐞𝐬𝐤𝐭𝐨𝐩 𝐀𝐩𝐩 𝐰𝐢𝐭𝐡 𝐂𝐨𝐫𝐞𝐃𝐚𝐭𝐚 + 𝐂𝐨𝐦𝐛𝐢𝐧𝐞 Delivered a clean, MVVM-structured desktop app using CoreData and Combine for smooth UI updates and persistent storage. 🔗 𝐏𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨 𝟑 – 𝐀𝐏𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐀𝐩𝐩 𝐰𝐢𝐭𝐡 𝐋𝐨𝐭𝐭𝐢𝐞 𝐀𝐧𝐢𝐦𝐚𝐭𝐢𝐨𝐧𝐬 Built a visually rich app featuring Lottie animations and seamless third-party API integration for enhanced interactivity. 🔗 𝐏𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨 𝟒 – 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐯𝐞 𝐒𝐡𝐨𝐩𝐩𝐢𝐧𝐠 𝐀𝐩𝐩 𝐔𝐈 𝐢𝐧 𝐅𝐢𝐠𝐦𝐚 Designed a mobile shopping app UI in Figma with responsive layouts, optimized for usability across iPhone and iPad screens. You can explore these live projects in my portfolio for real examples of my code, design, and delivery standards. 👥 𝐖𝐡𝐨 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡: Startups & Entrepreneurs launching new mobile or macOS apps Agencies who need reliable developers/designers for client work Businesses looking to redesign or optimize mobile/Desktop UI/UX Tech teams who need clean architecture, API handling, and modern Swift coding 🎯 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 & 𝐓𝐨𝐨𝐥𝐬: Languages/Frameworks: Swift, SwiftUI, Combine, Firebase, MVVM, CoreData Design: Figma, Lottie, Responsive Design Tools: PDFKit, REST APIs, JSON serialization, Git You’ve got a product that deserves to perform and look outstanding let’s make sure your users love every tap, swipe, and click. Click “Invite” and let’s build something that scales, converts, and stands out.

Customer satisfaction is what drives sales. When you hire me, you are hiring someone who understands how important it is for your clients to have a product they love, a product that runs smoothly and makes their lives easier. I always have the end user in mind, making all these tiny design and coding decisions needed to contribute to an overall great customer experience. I am reliable and passionate Mobile Applications Developer with 8 years in software development. I pay great attention to details, delivering clean and maintainable code on time. My skills: ‣ iOS Mobile Apps development: Swift 3, Swift4, Swift5, Firebase, UIKit/Cocoa Touch, Foundation, Alamofire/AFNetworking, In-App purchases/StroreKit, SpriteKit, CoreData, AFNetworking, CoreGraphics, MapKit, Accelerate, KeychainAccess, SwiftValidator, NSHash, AdSupport, AppsFlyer, GoogleConversionTracking, CocoaPods ‣ Android: JSON / XML, Java, Animation, Creating and Consuming Web-Services / APIS, Google Maps API, Facebook API, Admob Ads Integration, In-App Purchase Integration, Databases(SQLITE, MySQL, SQL, CoreData), Push Notifications, FireBase, KIDS Educational apps ‣ Flutter: Dart Programming language, Widgets, Animation, Material Design and Theming, Creating and Consuming Web-Services / APIS, Google Maps API, Facebook API, Admob Ads Integration, In-App Purchase Integration, Databases(SQLITE, Cloud Firestore), Push Notifications, Firebase ‣ Databases: MySQL, SQLite, MongoDB, Oracle ‣ Cloud server: Parse, Firebase, AWS, iCloud, Dropbox ‣ Third party frameworks: Facebook, Twitter, LinkedIN, Instagram, Youtube ‣ Geolocation & google map/ GPS tracking, Google API, MapKit ‣ Online Payment: In-App Purchase, PayPal, Apple Pay, Stripe, Braintree ‣ Chat & Messaging Engine: OpenFire, XMPP, Jabber, Socket.io ‣ Repository & Task management: Github, bitbucket, JIRA, Slack, Trello, PivotalTracker Good knowledge in code optimization, reducing code redundancies and write clear and loosely coupled code. Always work independently, polished leadership skills, with ability to motivate colleagues to increase productivity.

Hello, I'm Nirmalsinh Jadeja, a seasoned Mobile App Developer. If you're in search of a skilled mobile app developer or Android app developer with knowledge of Laravel, PHP, REST API, MySQL, and WordPress expertise, your search ends here. I am a dedicated and experienced Mobile App Developer with a strong background in Android app development and a comprehensive understanding of various backend technologies. My expertise lies in creating high-quality, user-friendly applications that meet your business needs and exceed your expectations. 👍 𝗦𝗸𝗶𝗹𝗹𝘀 𝗮𝗻𝗱 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 👍 ✅ Mobile App Development: Specializing in Android apps, ensuring performance, reliability, and a seamless user experience. ✅ Backend Development: Proficient in Laravel, PHP, and MySQL, creating robust and scalable backend solutions. ✅ API Integration: Expertise in REST API integration to ensure smooth and efficient data exchange between your app and server. ✅ Web Development: Skilled in WordPress for developing and managing websites, ensuring a cohesive online presence. ✅ App Customization: Offering reskinning and customization services to tailor apps to your brand's unique identity. ✅ Technical Support: Providing ongoing support and maintenance to ensure your apps and websites run smoothly. Why Choose Me? ✅ Experience: Over 7 years of experience in mobile and web development. ✅ Quality: Commitment to delivering high-quality, reliable, and user-friendly applications. ✅ Communication: Clear and consistent communication to keep you informed throughout the development process. ✅ Dedication: A passion for technology and a dedication to helping your business succeed. 👍 𝐌𝐲 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 👍 ✅ App Development ▪️ eCommerce App ▪️ Food Delivery App ▪️ Dating App ▪️ Video Streaming App ▪️ Grocery Delivery App ▪️ Ticket Booking App ▪️ Car Sharing App ▪️ WooCommerce App ▪️ Online Job Portal App ▪️ Healthcare App ▪️ Restaurant App ▪️ On Demand Service App ▪️ Beauty Salon App ▪️ Media & Entertainment App ✅ Website Development ▪️ E-commerce Website ▪️ Blogging Website ▪️ Portfolio Website ▪️ News Website ▪️ Social Networking Website ▪️ Educational Website ▪️ Corporate Website ▪️ Non-profit Website ▪️ Personal Website ▪️ Travel Website ▪️ Entertainment Website ▪️ Custom Website Recent Projects ✅ Fast News App: An Android news and blog application transforming a WordPress website into a dynamic mobile app using REST API for real-time updates. ✅ OTT Informer: An Android app providing the latest information about movies and web series, featuring an admin panel and integrated with TMDB APIs. ✅ Short News App: A concise news delivery app, similar to Inshorts, with a dedicated admin panel for easy content management. Let's Work Together If you're looking for a reliable, skilled, and experienced developer to bring your app ideas to life or to enhance your existing digital solutions, I'd love to hear from you. Let's discuss your project and how I can help you achieve your goals. Feel free to reach out to me for a detailed discussion of your project requirements. Thanks Nirmalsinh Jadeja

Are you looking for budget friendly or professional app developer? You are in right place! My name is M.Saqib Khan a Software Engineer with specialization in mobile application development. I've worked over 20+ android apps and deliver work on many platforms. I use cutting-edge technologies to develop reliable and efficient Android apps that work on every android devices. Technologies i use: Native app development Java Kotlin Jetpack Compose Android coroutines Navigation Components(Jetpack compose) Patterns(MVVM,MVP,Singleton) Room and SQLITE(database) Firebase JSON REST API Google Ads Integration My Services: Website to android app Adobe XD/Figma to pure android app Firebase Integration Push Notifications Any Kind of android app Efficient and reliable apps What You Can Expect from My Gig: Custom Android App Development using Kotlin and Jetpack Compose Authentication (Phone, Facebook, Gmail, etc...) Google APIs (Maps, Places, Direction, Drive, Text To Speach, etc) Firebase Intuitive User Interfaces Real-time API Integration Responsive UI/UX Enhanced Performance Bug Testing Local Database like RoomDB The Process: Consultation Design & Development Feedback Loop Testing & Refinement Ongoing Support I will Provide: Quality apps Best UI and UX android design 100% Satisfaction Why Should You hire me? Budget Friendly Fast delivery of android app 100% Satisfaction Note: Please message me your projects details so i can help you and give you best offer.

"I build Android apps that don’t just work—they scale." Most developers can build an app for 1,000 users. I specialize in architecting Native Android ecosystems designed for 10 to 15 Million users. With 3.5+ years of experience and a current role as a Senior Android Developer at SoftAxes Technology, I bring enterprise-level stability and high-velocity engineering to every project. 🚀 Velocity & Results I prioritize efficiency without compromising code quality. At my current firm, I recently delivered a production-ready System Utility app with 13 core features in just 6 working days. I achieve this speed by using modern architectures like MVI (Model-View-Intent) and strict Clean Architecture, ensuring that logic is decoupled, testable, and ready for rapid growth. 🤖 AI & The Modern Stack I stay ahead of the curve by integrating Generative AI (Gemini/OpenAI) into mobile solutions to create "smart" features that drive user retention. My technical foundation is built on: Languages: 100% Idiomatic Kotlin & Java. UI: Jetpack Compose, Material Design 3, and custom animations. Architecture: MVI, MVVM, Clean Architecture, and Modular Design. DI & Local Data: Dagger-Hilt, Koin, Room Database, and SQLCipher. Networking: Retrofit, OkHttp, and WebSockets for real-time data. Background Ops: WorkManager and Foreground Services for high-reliability background tasks. 🏆 Why Work With Me? I maintain a 100% Job Success Score because I treat every project as a business partnership. My experience collaborating with global firms like Ikame Global and Appvestor has taught me that the most expensive mistake a startup can make is "cheap code" that has to be rebuilt. I build it right the first time. My Expertise Covers: High-scale Marketplaces (C2C, B2B, Escrow logic) Fintech & Payment Gateways (Safepay, JazzCash, EasyPaisa, Stripe) System Utilities & Phone Cleaners Real-time Navigation & GPS Tracking Content Delivery & Media Apps (4K Wallpapers, AI Content) If you are looking for an Android Architect who understands the difference between an MVP and a Scalable Product, let’s connect. I’m happy to discuss a technical roadmap for your vision.