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Usama A.
$25/hr
100% Job Success
Available now
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Usama A. has worked .
Top Rated Flutter developer with 100% job success and 4+ years building production apps for startups and small businesses. I've shipped 15+ cross-platform apps on iOS and Android — including fintech, eCommerce, SaaS, POS, and task management apps now live in production. Most of my clients come to me with one of three problems: (1) they have a designer's mockup and need it built right the first time, (2) they have a half-finished app that needs to be fixed and shipped, or (3) they need to add real-world features like payments, push notifications, or offline sync to an existing build. I handle all three. What I build: - Cross-platform mobile apps in Flutter (iOS + Android from one codebase) - Firebase-powered backends: Auth, Firestore, Cloud Functions, Push Notifications - Payment integrations with Stripe and in-app purchases - REST API integrations and custom backend connections - State management done right with BLoC, GetX, or Provider - App Store and Play Store submissions, end to end Why clients hire me again: Clean, maintainable code you can hand to the next developer without embarrassment I write tests, document what I build, and don't disappear after delivery Honest timelines — if your idea is a 6-week build, I'll tell you, not promise 2 to win the job Send me a message with your project details and I'll get back to you within a few hours with honest feedback on scope, timeline, and approach.
Stefan V.
$25/hr
91% Job Success
$10K+ earned
Offers consultations
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Stefan V. has worked .
Mobile App Developer | Flutter & FlutterFlow Specialist I am a dedicated mobile app developer with 4 years of hands-on experience in Flutter and FlutterFlow, backed by a degree in Computer Science from the Faculty of Electrical Engineering. I specialize in crafting beautiful, intuitive, and high-performance mobile apps, with expertise spanning the entire development lifecycle—from UI/UX design and architecture to deployment. Whether you need a visually stunning app or a custom UI that enhances user experience, I can bring your vision to life with precision and creativity. 🚀 What I Offer: End-to-End App Development: I bring your vision to life with full app development, ensuring top-quality performance and user experience. UI/UX Expertise: Skilled in building sleek, user-friendly interfaces using Flutter and FlutterFlow to provide an intuitive, visually appealing app experience. Design Patterns: Proficient in implementing clean architecture and design patterns in Flutter apps, ensuring scalable and maintainable code. Landing Pages & Single-Page Websites: I also design and develop modern landing pages and single-page websites using HTML, CSS, and JavaScript — perfect for showcasing apps, services, or MVP products. Backend & Database Integration: Experienced with Node.js, Firebase and Supabase for scalable backend solutions, and SQLite for offline capabilities. Version Control: Knowledgeable in Git and GitHub for code versioning, collaboration, and project management. Automation & Build Tools: Familiar with Buildship for optimized development workflows. Tools & Technologies: Flutter, FlutterFlow, Javascript, CSS, HTML, Supabase, Firebase, SQL, RevenueCat, Paypal, OneSignal, Admob ads, Unity ads, Git, Buildship Mobile Stores Publishing: Proficient in app deployment, ensuring smooth and compliant launches on the Google Play Store and Huawei App Gallery. I’m here to collaborate with clients to deliver high-quality, responsive apps that engage users. Whether it’s building from scratch, adding features, refining UI, or following best practices with design patterns, I strive to make each project a success. Let's work together to bring your app ideas to life!
Nikhil S.
$35/hr
100% Job Success
$400K+ earned
Available now
Offers consultations
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Nikhil S. has worked .
I build complete digital ecosystems that connect field workers, office teams, customers and administrators through mobile apps, web portals and scalable backend systems. I do not build isolated apps that create more manual work. I build connected platforms where information flows between mobile devices, internal dashboards, customers and company management. Recent work: • A home inspection app I designed, built and launched on the Apple App Store • A field inspection platform for a US inspection services company • A payroll platform serving 300+ employees that I have maintained and extended for 5+ years Whether you need an MVP, an internal business tool or a complete field-operations platform, I plan, design, develop and launch systems built for long-term growth. 🚀 What I Build ✔ Field-Worker and Operations Platforms • Mobile tools for technicians, inspectors and on-site teams • Work orders, job assignments and scheduling • Digital checklists, forms and inspections • Photo, video, signature and document capture • GPS logs, time tracking and activity records • Offline access with automatic data synchronization • Office review and approval workflows • Instant PDF and custom report generation ✔ Inspection, Safety and Compliance Systems • Construction and property inspections • Safety audits and compliance tracking • Deficiency and corrective-action management • Equipment and facility inspections • Photo-based reporting and documentation • Management dashboards and analytics ✔ Internal Company Tools • Employee and operations management systems • Internal dashboards and admin portals • Approval workflows and role-based access • Document, task and data-management platforms • Reporting and business-performance dashboards ✔ SaaS, Marketplace and On-Demand Platforms • MVPs built for market validation and investor readiness • Subscription products and multi-tenant platforms • Service marketplaces, booking and on-demand applications • Customer, vendor and administrator portals • Payments, subscriptions and commission systems 🤖 AI Automation and Intelligent Features • AI-generated reports and summaries • Document and text extraction • Voice-to-text and automated note generation • AI chatbots and conversational interfaces • Automated data classification and intelligent search • Workflow automation using OpenAI, Gemini and Whisper 🛠 Technology Mobile: Flutter, React Native, Swift and SwiftUI, Kotlin and Jetpack Compose Web and Backend: React, Next.js, Node.js, Express, Firebase, MongoDB, PostgreSQL, AWS, Google Cloud Platform: Offline-first architecture, real-time sync, secure authentication and role permissions, push notifications, payment and subscription integrations, third-party APIs 🇺🇸 Working With US and Canadian Teams I work mainly with US and Canadian companies and keep daily overlap with US Eastern hours for standups, demos and reviews. Questions get answered the same business day, not the next morning. ⚡ Why Clients Choose Me • 100+ mobile, web and software products delivered • A full team behind me: product planning, UI/UX design, mobile, web, backend, QA, cloud deployment and store submission • Clear communication, realistic timelines and regular working demos • Architecture designed to avoid expensive rebuilds • Long-term maintenance and post-launch support Top Rated Plus | Top 3% on Upwork | $400K+ earned | 8,600+ hours | 136 jobs | 10+ years of product development 🚀 Let's Build Send me your requirements, your current process or an existing design. I will come back with a clear technical approach, a realistic estimate and the questions worth answering before you spend money.
Nap Works Private Limited
Associated with
Nap Works Private Limited
$200K+
earned
Komal T.
$18/hr
100% Job Success
$10K+ earned
Offers consultations
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I help startups and businesses build scalable mobile and web applications with modern technologies like Flutter, Next.js, Firebase, and AI-powered integrations. With 9+ years of experience in software development, I specialize in building high-performance digital products that are fast, user-friendly, and built for long-term scalability. My background started in native Android development (Kotlin/Java), and over the years I expanded into cross-platform mobile development, modern web applications, and AI-integrated solutions. I work with startups, founders, and growing businesses to turn ideas into reliable digital products, from MVP development to feature enhancements and long-term product support. What I Can Help You Build: • Flutter Mobile Applications • Android Apps (Kotlin/Java) • Cross-Platform Mobile Apps • Next.js & React Web Applications • SaaS Platforms & Admin Dashboards • AI Chatbot Integration • OpenAI / ChatGPT API Integration • AI-Powered Features & Automation • Firebase Backend & Authentication • REST API Integration • Google Maps & Mapbox Integration • Real-Time Features & Cloud Connectivity Technical Expertise: • Flutter • Android (Kotlin & Java) • React Native • Next.js • React.js • Firebase • SQLite • Retrofit2 / OKHttp • Google Maps / Mapbox • MVC / MVVM / BLoC / Cubit • Azure Cloud Services • AI API Integrations Why Clients Work With Me: ✔ Clean, scalable, and maintainable code ✔ Strong communication and project transparency ✔ Focus on performance and user experience ✔ Solution-oriented development approach ✔ Reliable support throughout the project lifecycle I focus on building applications that are not only technically strong but also aligned with real business goals, whether it’s launching an MVP, improving an existing product, integrating AI capabilities, or scaling a growing platform. If you're looking for a dependable developer to help build modern mobile, web, or AI-powered applications, feel free to reach out. I’d be happy to discuss your project.
Wanhar W.
$9/hr
100% Job Success
$9K+ earned
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Wanhar W. has worked .
⚡ Available for iOS Development Senior iOS Developer with 8+ years of experience building high-performance, production-ready apps 30+ shipped apps with 500K+ downloads across health-tech, logistics, and e-commerce. I focus on clean architecture, smooth UX, and scalable code that's easy to maintain and extend. 📌 Selected Work: - Built iOS app with 500K+ downloads - Delivered subscription-based platform used by international users (US & EU) - Developed logistics app with real-time tracking and complex feature set - Shipped health & fitness app with personalized user experiences 📱 iOS Development Expertise: - Swift, SwiftUI, UIKit — native iPhone & iPad apps - Clean Architecture, MVVM, VIPER — scalable & maintainable code - REST API & Firebase integration - Payments: StoreKit 2, RevenueCat, Stripe, Apple Pay - Unit Testing (XCTest), UI Testing, CI/CD (Bitrise, Jenkins) - BLE, camera, GPS, push notifications, real-time features - App Store submission & performance optimization ⭐ Why clients choose me: - Top Rated with 100% Job Success Score - Strong focus on performance, UX, and clean architecture - Fast communication & reliable delivery - Experience working with international teams (US & EU) If you need an iOS developer who ships clean, performant apps that users actually enjoy. Let's build something great. Specializations: iOS Development · SwiftUI Expert · AI Mobile Apps · LLM / OpenAI Integration · MVP Development · Health & Fitness Apps · Subscription Apps (StoreKit 2) · Firebase Backend · Scalable Mobile Architecture · REST & GraphQL APIs · BLE Integration · App Store Optimization · SaaS Mobile Apps
Betemariam A.
$15/hr
100% Job Success
$40K+ earned
Available now
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Betemariam A. has worked .
Have an app idea, an unfinished Flutter or FlutterFlow project, or an app that is stuck before launch? I build, complete, and launch FlutterFlow and Flutter apps for founders, startups, and businesses. I’m a Top Rated developer with a 100% Job Success Score, $40K+ earned, 3,700+ hours on Upwork, and more than 15 production apps delivered. My recent work includes: • Living Journal — an AI-powered journaling and reflection app • EarthToHome — a three-role marketplace connecting farmers directly with customers • Kiko Detailing — customer and service-provider marketplace apps • Academic Ballers — a sports platform connecting athletes with coaches I can take ownership of: • FlutterFlow and Flutter MVP development • Completing or repairing existing projects • Firebase and Supabase backend integration • Authentication, payments, subscriptions, APIs and notifications • Custom Dart actions and widgets • Testing, TestFlight, App Store and Google Play deployment I work directly in FlutterFlow and use custom Flutter/Dart code when the built-in tools are not enough. I test features on real devices, communicate progress clearly, and make sure the client receives the project source, backend access, and documentation. Send me your current project or feature list, and I’ll review it and tell you the best next step.
Umar A.
$20/hr
100% Job Success
Available now
Offers consultations
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Umar A. has worked .
Expert Flutter Developer specializing in frontend and backend development. Using Flutter (Dart), Firebase, Laravel, and AI integration, I build user-friendly, scalable solutions that help businesses grow always delivering high-quality results on time. 🏆 Top Rated by Upwork (Top 10%) 🏆 5+ Years of Experience 🏆 1000+ Hours here on Upwork 💯 100% Job Success Rate 🚀 Apps with 1M+ on Play Store & Apple Store 🚀 High-Performance MVPs and SaaS Applications 📅 On-Time Delivery 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀: 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: ✔️Attractive and responsive cross platform applications in Flutter/Dart. 𝗦𝘁𝗮𝘁𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: ✔️Provider, Redux, Bloc, Getx, RiverPod. 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗔𝗣𝗜𝘀: ✔️RESTful APIs integration, Firebase, PHP/Laravel. 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: ✔️MySQL, SQLite, PostgreSQL and Firebase Realtime Database. 𝗣𝘂𝘀𝗵 𝗡𝗼𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: ✔️Firebase Cloud Messaging (FCM), OneSignal, in-app notifications, and SMS integration. 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗨𝗜/𝗨𝗫: ✔️Proficiency in creative UI/UX design and Material Design. 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗚𝗮𝘁𝗲𝘄𝗮𝘆𝘀: ✔️Stripe, PayPal, Apple Pay and Google Play Subscriptions. 𝗔𝗽𝗽 𝗠𝗼𝗻𝗲𝘁𝗶𝘇𝗮𝘁𝗶𝗼𝗻: ✔️Ad Networks App Subscriptions and In-App Purchases. 𝗟𝗼𝗰𝗮𝘁𝗶𝗼𝗻 & 𝗠𝗮𝗽𝘀: ✔️Google Maps, Mapbox, Apple Maps and Location Services. 𝗔𝘂𝘁𝗵𝗲𝗻𝘁𝗶𝗰𝗮𝘁𝗶𝗼𝗻: ✔️OAuth, JWT, Firebase Authentication, Google, Apple, and Facebook Sign-in and two-factor authentication (2FA). 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 & 𝗨𝘀𝗲𝗿 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲: ✔️Analytic SDKs like AppsFlyer, Adjust and Google Analytics. 𝗔𝗜 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 : ✔️AI-Driven Chatbots and ChatGPT APIs 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻: ✔️Memory management, battery efficiency, lazy loading, offline caching and Firebase Performance Monitoring. 𝗖𝗹𝗼𝘂𝗱 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: ✔️Knowledge of cloud services like AWS (S3, EC2, Lambda), Google Cloud Platform, and Google Cloud API. 𝗩𝗲𝗿𝘀𝗶𝗼𝗻 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 & 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: ✔️Git, GitHub, Bitbucket, and project management platforms such as Jira and Trello. 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗶𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗶𝗻𝗴 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗔𝗰𝗿𝗼𝘀𝘀 𝗩𝗮𝗿𝗶𝗼𝘂𝘀 𝗗𝗼𝗺𝗮𝗶𝗻𝘀: • Food Delivery Application with Web Admin Dashboard • AI-Based Application • Hotel Booking Application for Android & iOS • Habit Tracking Mobile Application for iOS and Android • Health and Wellness App with AI-Based Exercises • Parcel Delivery System with Mobile and Web Applications • Salon Booking Application for Android & iOS • SaaS for Companies Registration System • File Transfer Application • Buy & Sell E-commerce Marketplace • Screen Mirroring Application • Speech-to-Text Application Just click on the 𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯 button and let's create something amazing together!
Evhen P.
$32.5/hr
100% Job Success
$40K+ earned
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Evhen P. has worked .
📱 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 · 𝟭𝟬𝟬% 𝗝𝗦𝗦 · 𝟳𝟬+ 𝗮𝗽𝗽𝘀 · 𝟱 𝘆𝗿𝘀 · 𝗹𝗶𝗳𝗲𝘁𝗶𝗺𝗲 𝘄𝗮𝗿𝗿𝗮𝗻𝘁𝘆 𝗼𝗻 𝗲𝘃𝗲𝗿𝘆 𝗮𝗽𝗽 𝗜 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 Clients come to me when the app needs to work - not just launch. Whatever it takes: complex state management, real-time sync, API integration, HIPAA flows, wearables, in-app purchases, AI features - I've shipped all of it. Every line still mine to support. 👉 𝗖𝗹𝗶𝗰𝗸 𝗛𝗶𝗿𝗲 𝗼𝗿 𝗜𝗻𝘃𝗶𝘁𝗲 to work with a React Native Developer and iOS Developer who owns the product, not just the sprint. 🎯 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗚𝗘𝗧 ✔️ As a React Native Developer and iOS Developer with 70+ shipped apps - complex state, real-time sync, third-party APIs, HIPAA-sensitive data flows, wearable integration. Not a prototype - a product that holds in production. ✔️ As a Mobile App Development React Native specialist - one TypeScript codebase, iOS and Android, App Store and Play Market. Firebase, Redux, push notifications, subscriptions. 40–60% faster launch than split native teams. ✔️ As a Mobile App Developer and React Native Developer for long builds - 6–18 months, mobile app redesign, scaling live codebases. 100% client retention across 5 years. ✔️ As a full stack developer react native - Node.js, REST APIs, Firebase, end-to-end mobile app development. 🔥 𝗔𝗖𝗛𝗜𝗘𝗩𝗘𝗠𝗘𝗡𝗧𝗦 ✔️ 5 years · 70+ apps as a React Native Developer and Mobile App Developer - Healthcare, Wellness, Fitness · US, EU, global. ✔️ 30–45% better retention across 15+ Mobile App Development React Native builds - wearable sync, HIPAA-compliant. ✔️ 40–60% faster time-to-market as a Mobile App Developer and iOS Developer vs split native teams - one codebase, full parity. ✔️ 2x faster onboarding as a Mobile App Developer - smart flows, push notifications, subscription logic. ✔️ 100% satisfaction · Mobile App Developer lifetime code warranty across every engagement. 🚀 𝗪𝗛𝗘𝗥𝗘 𝗜 𝗗𝗘𝗟𝗜𝗩𝗘𝗥 ✔️ Patient engagement, wearable & sensor sync, HIPAA-sensitive data - as a React Native Developer this is core territory. 15+ Healthcare Mobile App Development React Native products shipped. ✔️ Fitness booking, real-time workout sync, athlete health tracking - as a Mobile App Developer and iOS Developer for sports and wellness, apps users open daily. ✔️ Corporate wellness - Mobile App Development React Native: react native expo, react native developer expo, react native tailwind UI, multi-role, subscription-driven, production-grade. ✔️ AI wardrobe, lifestyle, and consumer products - react native app developer work across react native mobile, react native engineer, mobile application developer builds where UX drives retention. ✔️ E-Commerce and shopify mobile app builds - mobile app design, mobile app development as a Mobile App Developer delivering Mobile App Development React Native with 20–30% better conversion. 🏆 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗬 𝗩𝗘𝗥𝗧𝗜𝗖𝗔𝗟𝗦 ✔️ Healthcare & Clinical - React Native Developer and iOS Developer: HIPAA patient platforms, wearable sync, clinical-grade UX. 30–45% adherence. ✔️ Fitness & Sports - Mobile App Developer and iOS Developer: real-time sync, booking, Strava API. 2x onboarding. ✔️ Corporate Wellness - Mobile App Developer: Mobile App Development React Native for EU-market B2B, multi-role. 25–35% engagement. ✔️ AI & Lifestyle - React Native Developer: AI wardrobe, bubble-style UX, react native mobile consumer products. ✔️ E-Commerce & Shopify - Mobile App Developer: shopify mobile app, mobile app design, Mobile App Development React Native that converts. ⚒️ 𝗛𝗢𝗪 𝗜 𝗕𝗨𝗜𝗟𝗗 ✔️ 70+ apps as a React Native Developer: React Native, React, JavaScript, TypeScript, Redux, Firebase, Node.js, REST APIs, react native expo, react native tailwind - full Mobile App Development React Native stack. ✔️ Native layer as an iOS Developer and Android specialist: iOS Development (Swift, HealthKit, App Store), Android App Development (Kotlin, Google Fit, Play Market), Smartphone, Native App Development. ✔️ UI layer: HTML, HTML5, CSS, CSS3, CSS 3, Responsive Design, Mobile App Design, Web Design - react developer and web developer-aware patterns. ✔️ Backend & data as a full stack developer react native: Node.js, MongoDB, SQL, PHP, Python, Laravel, WordPress, Vue.js, Angular, Java, Git, Software Architecture & Design, Software Development, Debugging. ✔️ Ecosystem: Flutter, flutter developer App Development, Mobile App Redesign, Desktop Application, Shopify, Web Development, python developer tools, business analyst-grade ownership. 🔹 Lifetime warranty - every bug on my side fixed, no questions asked, for as long as your app is live. 🔹 Full ownership as an iOS Developer and React Native Developer - architecture, build, App Store & Play Market. 🔹 React Native Developer · iOS Developer · Mobile App Developer · Mobile App Development React Native · 70+ apps · 100% JSS. Building a mobile product on React Native? Message me 💬
Oleg A.
$30/hr
100% Job Success
$400K+ earned
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Oleg A. has worked .
Full-stack developer specialising in Flutter for sleek, cross-platform frontends and Java/GCP/AWS for robust backend systems. AI adopter. Flutter Development. 5 years of experience creating high-performance cross-platform applications with Flutter, covering mobile, web, and desktop platforms. Proven ability to develop complex solutions, including networking, video streaming, marketplaces, and social applications. Java Enterprise Development. 13 years of hands-on experience building robust Java enterprise applications, specializing in custom development for open-source ERP systems. Strong expertise in business process automation and enterprise data modelling. Backend Expertise. Capable of designing and integrating backend solutions, whether leveraging cloud services like Firebase and AWS or implementing custom Java-based architectures. Experienced in implementing and automating testing processes, including unit testing and integration testing, to ensure software reliability and maintainability. With a deep understanding of software development and a passion for creating scalable, efficient applications, I bring a results-driven approach to every project.
$30/hr
100% Job Success
$40K+ earned
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Usama T. has worked .
React Native Developer with 6+ years shipping iOS and Android apps that reach the stores and stay there. 100% Job Success | 3,548 hours | $40K+ earned on Upwork. Send me your idea, Figma file, crash log or half-finished repo and I will tell you honestly what it needs before you pay me anything. FACTS ABOUT ME - 100% Job Success Score across every contract I have completed on Upwork - 3,548 hours logged, $40K+ earned, 11 contracts, zero disputes - Two of my longest React Native contracts ran 1,356 hours and 890 hours - clients keep me for years, not weeks - Apps I built are live right now on the App Store and Google Play - BEng Software Engineering, University of Gujrat - Average response time under 4 hours WHAT I BUILD React Native Development - one codebase, iOS and Android, native modules when the job actually needs them React Native Expo - Expo managed and bare workflow, EAS Build, EAS Submit, over-the-air updates Firebase - Auth, Firestore, Cloud Functions, Push Notifications, Crashlytics, Analytics Mobile App Development - App Store and Google Play submission, TestFlight, release signing, store rejections fixed AI Integration - OpenAI and Claude APIs, AI chat, AI features inside mobile apps Backend - Node.js, Express, REST and GraphQL APIs, MongoDB, MySQL, WebSockets, AWS EC2 Native - Swift, SwiftUI, Kotlin, Jetpack Compose Web - React, Next.js, TypeScript for the dashboard behind your app WHERE I AM MOST USEFUL - Your React Native app crashes, or crashes only in the release build - Another developer started your app and disappeared halfway - Apple or Google rejected your submission and you do not know why - It works on Android and falls apart on iOS, or the other way round - Slow lists, heavy re-renders, huge bundle size, cold start takes forever - Expo to bare workflow, or an upgrade across several React Native versions - Push notifications, deep links, in-app purchases, offline sync, real-time chat - You need the app AND the backend AND the admin dashboard from one person INDUSTRIES I HAVE BUILT FOR Healthcare and Telemedicine App Development Mental Health and Therapy App Development Fitness, Health and Wellness App Development Wearables, HRV and Health Tracking Apps Food Delivery and Marketplace App Development Social and Community App Development Chat, Messaging and Real-Time App Development Admin Dashboards, CRM and Analytics Platforms Travel and Tourism Booking Apps E-Commerce and On-Demand Apps WHAT CLIENTS SAY "I had the pleasure of working with Usama on my mobile app development project using React Native, and I can confidently say that their skills and expertise in the field..." - React Native, 1,356 hours "Excellent developer! He did everything I asked and went above and beyond. Anything he didn't know, he quickly researched and found a solution immediately." - React Native Mobile Application "Usama has a very deep level understanding of so much (NodeJS, MongoDB, Mongoose, Javascript, caching). I learned a lot myself working with him." - Node.js Developer "Usama is great resource, and very professional. The whole team enjoyed working with him. Very knowledgeable and available anytime." - React / Node.js Developer HOW I WORK Step 1 - Free review. Send the repo, the crash, or a paragraph. I tell you what is actually wrong and whether I am the right person. Step 2 - Plan. Architecture and milestones agreed before I write a line of code. Step 3 - Build. Updates you never have to chase. Step 4 - Test. Real devices, multiple OS versions, edge cases. Step 5 - Launch and stay. App Store and Play Store submission handled, and I am still reachable afterwards. I use Claude Code, Cursor and GitHub Copilot to move faster, but every line ships reviewed. Speed without the sloppiness. Message me with a short summary of your project and I will reply within 24 hours. TOP SKILLS React Native | React Native Developer | React Native App Development | React Native Expo | Expo | Mobile App Development | Mobile App Developer | iOS App Development | iOS Developer | Android App Development | Android Developer | Cross-Platform App Development | Firebase | Mobile App Bug Fix | App Store Submission | Google Play Deployment | AI App Development | AI Integration | Node.js | Express | MongoDB | REST API | GraphQL | TypeScript | JavaScript | React | Redux | Healthcare App Development | Fitness App Development | MVP Development