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🥇 Total 5+ years of experience as a Full-stack Developer 💯 1 hours of response time with 100% Client Dedication! 🕛 Full Time Availability 👋Hey, Are you looking for an Expert Android Engineer? you are at the right place. I have a strong and deep understanding of Android SDK, Coroutines, MVVM, Retrofit, Room Database, and Android Mobile Applications. I'm an independent freelancer. I'm a Native Expert Android Engineer with 6+ years of experience developing all types of mobile applications using Kotlin and Java. I have experience in Dating, healthcare, Social, e-Commerce, education, etc kind of applications in Android. I have vast experience of developing websites and apps for various industries, including dating apps, fintech, social networking sites, health and wellness programs, taxi booking, food delivery, chats, messengers, audio/video chats, and sports and fitness apps. ► Excellent knowledge of Android/Java/Kotlin best practices and standard code style ► Experience with SCM tools, GIT, JIRA, Android Studio, ClearCase, etc. ► Strong skills in problem-solving and time management ► Knowledge of testing mobile applications ► Software platforms development experience, such as Linux and Android platform ► Familiar with the Android development toolkit and process. **MY TECHNICAL ABILITIES YOU CAN GET ** ✅ iOS and Android: Swift, Xcode, Kotlin, Java, Objective C, Android Studio ✅ React Native, Flutter, Ionic, React, XML, Redux ✅ Design and development of mobile apps for iOS and Android using Firebase, Hybrid Apps, and TypeScript ✅ Payment Gateways: WorldPay, PayPal, Apple Pay, Google Pay, Stancer, Stripe, 2Checkout, Adyen, Payline, Skrill and Braintree ✅ App Deployment on Google Play Store, IOS store and also on third party store as well ✅ Push Notifications, Payment Gateways, AWS, Analytics, Ads, Firebase, and React Native Expert ✅ Back-end API development with ASP.NET CORE, Node, Python, Django, PHP and Laravel Framework I have a proven track record of working effectively in both large teams and one-on-one with clients. I can assist you in creating websites and apps from scratch, taking your ideas and turning them into reality. I'm a reliable partner in your project's journey, and I'm dedicated to achieving your goals. For me is important to perform quality work for the client, I treat each project as my own because their success fuels mine's. When I’m working on a project, I don’t want just to meet deadlines. Rather, I prefer to complete the project well ahead of schedule. 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 🚀 Great Work Ethic: I'm dedicated to doing top-quality work on every project. 🚀 Innovative Solutions: Provide innovative and impactful solutions to challenges. 🚀 Transparent Communication: Clear and open communication, utilizing platforms like Slack, Discord, Telegram, Skype, Jira, Trello, Asana, or ClickUp for timely updates. 🚀 Quick Learner : Quickly adept and master new frameworks, ensuring seamless integration into your projects. 🔷 READY TO TALK: 🕒 Schedule I'm here to discuss your project anytime, whether in writing or via voice or video calls. 💬 Availability I'm available 24/7 because your satisfaction matters most. Yes, even on Sundays. 📩 Reach Out Message me anytime, anywhere, and I'll get back to you ASAP. Let's chat about your project whenever you're ready.

I build Flutter apps that ship — not prototypes that stall at 80% done. Over the past 4+ years I've taken 30+ mobile products from a blank repo to the App Store and Play Store, including AI-powered apps, FinTech tools, and real-time platforms used by paying customers today. If you need a developer who can own the full build — architecture, AI integration, backend, deployment — you're in the right profile. What I actually solve for clients: * You have an idea or a stalled project and need someone who can architect it correctly the first time, not patch it later * You want AI features (OpenAI, Gemini, Claude, custom LLM workflows) built into a real product, not a demo * You need Firebase set up properly — Auth, Firestore, Cloud Functions, FCM — so it scales past your first 1,000 users * You want both Flutter and native iOS (SwiftUI) capability under one contractor instead of coordinating two teams Recent work includes: * AI-powered health and fitness apps with OpenAI-driven personalization * Real-time chat and social apps built on Firebase + Socket io * FinTech apps with secure payment gateway integration * NFC-enabled apps for access control and card reading/writing * Alarm and background-service apps requiring native platform depth beyond standard Flutter plugins How I work: * Clean Architecture, testable code, and documentation — so your next developer (or I, six months later) isn't guessing * Direct, frequent communication — no disappearing between milestones * I scope realistically upfront; I don't pad timelines to inflate hours, and I don't lowball to win the job then stall Tech stack: Flutter, Dart, FlutterFlow, SwiftUI, Firebase (Auth, Firestore, Cloud Functions, FCM), REST APIs, OpenAI/Gemini/Claude API integration, Provider, Riverpod, Bloc, GetX, Socket io, Google Maps, NFC, payment gateways. If your project needs someone who can go from Figma file to App Store approval without handing off pieces to three other freelancers. Send me a message with what you're building and I'll tell you honestly whether I'm the right fit.

Most developers build your app. Few actually get it live. I do both. I develop high-performance mobile apps and take them all the way through publishing on Google Play and the App Store — so you get a finished product, not just finished code. What I deliver: Cross-Platform App Development : One codebase, two platforms. Built with Flutter or React Native for native-like performance on both iOS and Android. Google Play Store Publishing : Full submission, store listing setup, metadata optimization, and compliance with Google's policies. Apple App Store Publishing : End-to-end iOS deployment including provisioning profiles, TestFlight, and App Review guidelines compliance. UI/UX Implementation : Clean, responsive, and user-friendly interfaces that keep users engaged. Bug Fixing & App Maintenance — Ongoing support to keep your app running smoothly after launch. Why clients work with me: I don't just code — I own the entire process from first screen to live app Clear timelines, regular updates, and zero surprises Full compliance with both Apple and Google store policies Apps built for real users — fast, stable, and scalable

🏆 ASO (App Store Optimization) 🏆 Android & iOS Apps and Games 🏆 Organic Traffic Growth 🏆 Conversion Rate Optimization 🏆 Store Listing Localization 🏆 Monetization Strategies 🏆 Paywall Optimization (For iOS Apps) 🏆 Retention Strategies 🏆Apple Search Ads Expert 🏆 Google Ads Expert 🏆 Meta Ads 🏆 AppsFlyer 🏆 WordPress Development Hi there! I am a professional and Certified ASO (App Store Optimization) Mentor, Mobile App Marketer, and WordPress Web Developer. I have 5+ years of Extensive Experience in ASO (App Store Optimization), UA (User Acquisition), Apps/Games Localization (Local ASO), and App Growth Marketing. I can help you to improve your Android and iOS Apps & Games Ranking, Visibility, Organic Traffic, and Installs on the App Stores (Google Play & App Store) through Proven ASO (App Store Optimization) Strategies because I am an experienced person and I know all the ins and outs of ASO (App Store Optimization) for the Apple App Store & Google Play Store. 🌟 I have more than 5 years of Experience with Google's and Apple's Algorithms in the App Stores 🌟 My 100% Working ASO - App Store Optimization Strategies will maximize the ⚡ Power of your Android and iOS Apps & Games Store Listings on the App Stores (Google Play and App Store) to Outrank your competitors and lead your niche. I will use the 2026 Latest ASO (App Store Optimization) Strategies and Legal ASO Tricks to get your Apps or Games Ranked Better and Higher on the Google Play and App Store. With the help of My Proven ASO (App Store Optimization) and App Marketing Strategies, Many Android & iOS Apps and Games are at the Top of Google Play and Apple App Store Search Results. 👉 I can also promote your Newly Launched or Existing Apps and Games through Apple Search Ads, Google Ads, and Meta Ads App Install Campaigns and Boost⚡ their installs in your targeted countries with a focus on Positive ROAS and Low CPA/CPI. 🌟 FEEL FREE TO CONTACT ME TO GET MY SERVICES 🌟 👉 FOR ASO 🚀 APP STORE OPTIMIZATION AND MOBILE APP MARKETING SERVICES, CONTACT ME IF: ✅ You want a Highly Performing ASO (App Store Optimization) for your Newly Launched or Existing Android & iOS Apps and Games. ✅ You want to improve your Android and iOS Apps & Games Ranking, Visibility, Organic Traffic, and Installs on the App Stores (Google Play & App Store) through ASO (App Store Optimization). ✅ You are looking for an ASO (App Store Optimization) Expert who can create 100% working ASO Optimized Metadata (Title, Subtitle, Keywords Field (Keywords) For iOS, Short Description (For Android), and Powerful Long Description) for your Apps and Games. ✅ You want to improve the Conversion Rate (CVR) and Retention Rate of your Android or iOS Apps and Games. ✅ You want to increase your Android or iOS Apps and Games Real 5 ⭐⭐⭐⭐⭐ Ratings and +Ve Reviews Faster ⚡. ✅ You want to improve your Apps and Games Monetization Strategy and KPIs to Generate More Revenue 💰. ✅ You want Store Listing Localization 🌏 (Local ASO) for your Android & iOS Apps and Games to Reach Global Audiences. ✅ You want In-depth Mobile App Market Research and Comprehensive Competitor Analysis for your Apps and Games. ✅ You want a Full ASO Audit and Apps/Games Audit to Identify Growth Opportunities. ✅ You want Post-Install Funnel Optimization including Onboarding, Signup Flow, and Paywall Optimization to Improve Retention and Convert Installs into Paying Customers. ✅ You need an ASO Manager for Google Play Console or App Store Connect Analysis and Management. ✅ You want to⚡Boost your Apps and Games Installs via Apple Search Ads (ASA), Meta Ads, or Google Ads App Install Campaigns. My Results are Magnificent, with a more than 75% increase in downloads in One single language. I can also Localize your Apps and Games and their Store Listings in 40+ languages which include Arabic, Turkish, French, Spanish, German, Italian, Russian, Portuguese, Thai, Chinese, Japanese, Swedish, Dutch, Polish, and so on. I also help my clients with their store listing visuals (Icon and Screenshots) localization process. 🌟I have worked with some of the Top-Grossing apps in the USA, Canada, France, Switzerland, and China. 🌟 🛠 During ASO - App Store Optimization process. I use the Following Groundbreaking ASO Tools. 🔹App Annie 🔹App Follow 🔹App Tweak 🔹Sensor Tower 🔹App Figures 👉🥇What My Clients Say About Working With Me:🥇 ⭐⭐⭐⭐⭐ "Outstanding experience! Mazhar's expertise in App Store Optimization and advertising significantly boosted our app's visibility and downloads. Highly recommend for his efficiency, professionalism, and results." ⭐⭐⭐⭐⭐ "To work with Mazhar Hussain for the ASO project was the best choice. I didn't expect so much experience and so many solutions. He has done the job earlier than agreed with very good communication. 100% for our apps he is the best choice for ASO work. Thanks, Mazhar Hussain!" 🎯 WORK WITH US AND WE WILL HELP YOU TO TAKE YOUR ANDROID & iOS APPS AND GAMES TO THE NEXT LEVEL!

Senior Flutter & Node.js Developer | 5+ Years Experience | Full-Stack Architect Overview Hi, I’m Usama Mukhtar, a Software Engineer and a certified Flutter and Node.js developer with over 5+ years of hands-on experience. I specialise in mobile app development using Flutter and backend development with Node.js. I help businesses transform ideas into user-focused, scalable, and high-performance digital products by using modern technologies and efficient development practices. Trusted By: Over 100 global clients across healthcare, fintech, e-commerce, POS systems. Success Rate: 95% client retention with more than 174 projects successfully delivered on time. Commitment: I offer a free 60-minute consultation to understand your requirements and align the technical strategy with your business goals. 🟢Technical Skills Strong experience with third-party libraries and RESTful APIs Skilled in Android and iOS development Expertise in state management and app architecture in Flutter Proficient in Firebase (authentication, real-time DB, Firestore, cloud functions) Experience with push notifications and in-app purchases Integration of payment gateways and subscription models Google Maps and location-based services API integration for real-time data handling and synchronisation Strong command of Dart Additional experience: Java, Kotlin, SQLite, HTML, JavaScript, CSS3, Git 🟢Soft Skills Excellent problem-solving abilities Strong communication and teamwork Professional documentation practices Responsible, reliable, and legally compliant Creative and proactive approach to resolving issues Ability to clearly understand and deliver business requirements 🟢Roles and Responsibilities Design, develop, test, and deploy mobile and web applications Collaborate with UI/UX designers, QA teams, and stakeholders Take ownership of delivering high-quality and user-friendly products Provide continuous support, updates, and maintenance Stay current with modern technologies and trends Optimize workflows and write clean, reusable code Build Flutter applications for both Android and iOS Follow company standards, best practices, and guidelines Develop reusable UI components for efficient scalability 🟢Conclusion With strong expertise in Flutter, Node.js, and full-stack development, I focus on delivering reliable, high-quality, and scalable solutions. I have hands-on experience with Firebase, push notifications, in-app purchases, payment integrations, maps, and API-based applications. Client satisfaction and clean, efficient code are always my top priorities. I am confident that I can deliver the results you need for your project.

Android Developer | Kotlin & Java Expert | 7+ Years of Experience 🚀 Passionate Android Developer with over 7 years of hands-on experience in designing, developing, and deploying high-performance mobile applications. I specialize in building scalable, maintainable, and user-friendly apps using Kotlin and Java, following modern Android architecture and best practices. Key Expertise: ✅ Android SDK – Deep understanding of core Android components and architecture. ✅ Jetpack & MVVM – Best practices for modern, scalable app development. ✅ REST API Integration – Efficient network communication with Retrofit/Volley. ✅ Payment Gateway Integration – Stripe, PayPal, Google Pay, and in-app purchases. ✅ Google Play Console – End-to-end app deployment and management. ✅ Multi-Screen & Adaptive UI – Responsive layouts for all devices. ✅ Room Database & Firebase – Robust offline storage and real-time syncing. ✅ Push Notifications – GCM/FCM implementation for engagement. ✅ Google Fit & Google Maps API – Seamless health and location-based services. ✅ Google Drive API – Cloud storage solutions within apps. ✅ Ad Network Integration – AdMob, Facebook Ads, Unity Ads, and more. ✅ Why Choose Me? I write clean, modular, and testable code that ensures long term maintainability and easy feature expansion. Whether you're building a native Android app I can help you ship robust, production ready solutions faster. Let’s bring your idea to life across platforms! 🌐📱🚀