Hire the Best React Native Developers
in Vietnam

Hi there 👋 I help businesses build high-quality React Native apps that scale seamlessly across iOS 📱 and Android 🤖. With 7+ years of experience (including apps with millions of users 🌍), I deliver fast ⚡, reliable ✅, and clean solutions that clients can trust. ✨ What I bring: • 🎨 Pixel-perfect UI from Figma/Sketch to production • 🔌 Smooth 3rd-party SDK & API integrations • 🔄 CI/CD setup (Fastlane, Bitrise, TestFlight, Diawi) • 🏪 App Store & Google Play submissions (with proven approval shortcuts) • 🛠️ Native iOS/Android support for advanced platform features 💡 Why work with me: • 💬 Responsive — I reply within minutes • 🏆 Proven track record — 100% Job Success, Top Rated • 🌐 Time zone friendly — flexible with AU/EU/US clients • 📢 Transparent — daily updates to keep you in control 📱 Some of my work: • 🔗 Reset: Lasting Weight Loss • 🔗 Pharmacity • 🔗 Aisahub • 🔗 Uniteverse 👉 Let’s turn your app idea into a polished ✨, user-friendly 💎 product that gets to market faster 🚀.

𝐖𝐞 𝐨𝐟𝐟𝐞𝐫 𝐅𝐑𝐄𝐄 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐚 𝐅𝐑𝐄𝐄 𝐪𝐮𝐢𝐜𝐤 𝐫𝐞𝐯𝐢𝐞𝐰 𝐨𝐟 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭, 𝐚𝐧𝐝 𝐮𝐬𝐮𝐚𝐥𝐥𝐲 𝐫𝐞𝐬𝐩𝐨𝐧𝐝 𝐰𝐢𝐭𝐡𝐢𝐧 𝐚 𝐟𝐞𝐰 𝐡𝐨𝐮𝐫𝐬. We are Teaser Software, an ITO company based in Hanoi, Vietnam. If you’re looking for a reliable team to take your project from idea → design → development → launch → maintenance, while leveraging AI to accelerate development and improve efficiency without compromising quality, you’re in the right place. Whether you already have a detailed specification or just an initial idea, we can help shape it into a clear roadmap with realistic timelines and costs. 𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭. 𝐉𝐮𝐬𝐭 𝐬𝐞𝐧𝐝 𝐮𝐬 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐚𝐧𝐲𝐭𝐢𝐦𝐞. 𝐖𝐞 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐚𝐜𝐫𝐨𝐬𝐬 𝐦𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐭𝐢𝐦𝐞 𝐳𝐨𝐧𝐞𝐬, 𝐬𝐨 𝐨𝐮𝐫 𝐭𝐞𝐚𝐦 𝐢𝐬 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝟐𝟒/𝟕, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠 𝐰𝐞𝐞𝐤𝐞𝐧𝐝𝐬.

I am a mobile app developer focused on building production ready applications using 𝙍𝙚𝙖𝙘𝙩 𝙉𝙖𝙩𝙞𝙫𝙚 and 𝙁𝙡𝙪𝙩𝙩𝙚𝙧. I specialize in 𝙁𝙞𝙣𝙩𝙚𝙘𝙝 and 𝙇𝙤𝙜𝙞𝙨𝙩𝙞𝙘𝙨 apps where reliability, real time data, and system stability are critical. I have worked on mobile products that go beyond UI development and deal with real world complexity such as payment flows, live tracking systems, offline usage, background sync, and performance optimization under unstable network conditions. My goal is to build mobile apps that are stable, scalable, and ready for real users from day one. I mainly work with clients from the United States, United Kingdom, Canada, and Australia. I can easily align with your timezone to ensure smooth communication and fast iteration during development. 🏦 Fintech Applications I build mobile finance systems that require accuracy, security, and consistency. Challenges I solve include 🔻 Preventing duplicate transactions in unstable network conditions 🔻 Building real time wallet and balance updates without UI issues 🔻 Integrating Stripe and payment systems with backend reconciliation 🔻 Secure authentication and role based access flows 🔻 Designing simple dashboards for complex financial data The result is stable fintech applications that handle sensitive operations with confidence. 🚚 Logistics and Mobility Applications I build apps focused on real time tracking, movement, and operational workflows. Challenges I solve include 🔻 Live GPS tracking with optimized battery usage 🔻 Real time driver and delivery status synchronization 🔻 Offline functionality for low connectivity environments 🔻 Map performance optimization using Google Maps SDK 🔻 Background location tracking without crashes or delays The result is reliable logistics systems used in real operational environments. ⚙️ Tech Stack ∘ React Native ∘ Flutter ∘ Node.js ∘ Express ∘ FastAPI ∘ Firebase Authentication ∘ Firestore ∘ Cloud Messaging ∘ Supabase PostgreSQL ∘ Supabase Edge Functions ∘ Stripe Payments ∘ Google Maps SDK ∘ REST APIs ∘ GraphQL APIs ∘ Git and CI CD ∘ App Store and Play Store deployment 🧠 How I Work Most mobile apps fail because of poor data flow, unstable backend integration, or missing edge case handling. My approach focuses on Designing data flow before UI Building strong API integration structure Handling offline and failure cases early Optimizing performance during development, not after launch Ensuring stable user experience under real usage conditions 🌍 Clients I Work With I work with startups and businesses building serious mobile products, especially in fintech and logistics domains. Most of my clients are based in - United States - United Kingdom - Canada - Australia - Germany ⏰ Timezone I can align with your timezone to ensure smooth communication, quick feedback cycles, and efficient collaboration throughout the project. 🚀 What You Get - Production ready mobile applications - Clean and scalable architecture - Strong performance and reliability focus - Fast and clear communication - Long term maintainable codebase 💪 Interested in working together? Feel free to click the Message button. Let’s discuss your project goals and see how I can help you build a reliable and scalable solution. 🔎 Upwork SEO Keywords mobile app developer, React Native developer, Flutter developer, fintech app developer, logistics app developer, GPS tracking app developer, real time mobile app, Firebase developer, Supabase developer, Node.js backend developer, cross platform mobile apps, iOS Android developer, Stripe integration, payment app developer, mobile app architecture, offline first mobile app, Google Maps integration, fleet management app, delivery tracking app, mobile API integration, scalable mobile apps, push notifications Firebase Cloud Messaging, backend integration mobile apps

Welcome to my profile, hope we can work together. Here are a couple of feedbacks given by my previous clients, exactly here in Upwork, for your reference: 🔊"Phương is a very good developer. He works diligently, recommends best practices & walk the extra mile with you. Would like to hire him again for any similar work in the future." 🔊"Phương Nguyễn is a great resource. Always ready to walk an extra mile, recommend best practices, follow good coding methodologies. I'll hire him again & again." 🔊"I have been looking for experienced React developer, here I found one Mr Nguyen. He is very cool guy. I enjoyed working with him. I never thought he would finish the job very fast. Even he taught me how can I run the code in my computer. Gave me some extra time. I will definitely hire him again." Here are some skills that I'm proficient with React Native: ✅ 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄: MobX, Redux ✅ 𝐒𝐓𝐎𝐑𝐀𝐆𝐄: react-native-storage, react-native-SQLite, realmJS ✅ 𝐓𝐃𝐃: jest, detox ✅ 𝐎𝐏𝐒: Fastlane, Github Actions, Azure Pipeline

Hi! I’m Long Nguyen, a Top Rated Full Stack & React Native Developer with 4+ YoE building web and mobile applications. I specialize in React Native mobile apps and modern full-stack development with ReactJS / Next.js and Node.js / NestJS. I’ve built and shipped production applications serving 100,000+ users and 98%+ crash-free rate across iOS and Android. I help startups and businesses turn ideas into high-performance, scalable applications with clean architecture and smooth user experience. ⸻ 🚀 Building scalable web & mobile apps that users actually love ⭐ 100% Job Success | 💰 $19K+ Earnings 💼 What I Can Help You With ✅ Mobile App Development (React Native / Expo) Cross-platform apps with native-like performance for iOS & Android ✅ Modern Web Applications (ReactJS / NextJS) Fast, scalable, and SEO-friendly web apps ✅ Backend & API Development (NodeJS / NestJS) Secure APIs, authentication systems, and scalable backend architecture ✅ Real-Time Features Chat systems, push notifications, live updates ✅ Cloud & Integrations Firebase, AWS, Google APIs, third-party services ✅ Performance Optimization & App Store Deployment CI/CD pipelines, optimized builds, App Store & Play Store releases ⸻ 💡 Why Work With Me? • Clean, maintainable, production-ready code • Strong communication and fast response • Startup mindset — focus on shipping real products • Experience building and scaling production apps ⸻ 👉 If you’re looking for a developer who can design, build, and ship your web or mobile app end-to-end, let’s connect!

Senior Node.js, React & React Native developer with 5+ years of experience building scalable APIs, web/mobile apps, and real-time systems. Strong background in authentication, payments, Firebase, AWS, and AI integrations for SaaS platforms. Backend-focused engineer with solid frontend expertise—React.js for SPAs and React Native for cross-platform mobile applications—delivering clean, maintainable, and production-ready code. Tech stack highlights: - Node.js (MEAN & MERN stacks) - React.js & React Native - GraphQL & RESTful APIs - MongoDB, MySQL, PostgreSQL - TypeORM, Sequelize, Prisma,... - AWS services I’d be excited to apply my skills to your project and deliver meaningful value to your team.