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Hello! I'm Antony Hoang , a dedicated software engineer specializing in building high-performance Flutter applications. I'm focused on forming long-term partnerships with clients to help build and scale their digital products over time. With 3+ years of hands-on experience, I transform app ideas into robust, real-world solutions. My technical expertise includes Java, Kotlin, and Dart, and I am highly proficient with Android Studio and VS Code. Recent Project Highlights I deliver solutions that provide lasting value. Here are a few examples: HR Leave Management App: I developed a complete HR application that modernized how employees request annual leave. By creating an intuitive workflow for requests, manager approvals, and balance tracking, we successfully replaced a manual system, saving the company significant administrative time. POS App with Data Sync Module: For a Japanese client, I built a highly reliable Point-of-Sale (POS) application. This complex project involved handling secure transactions directly to a database and integrating with hardware. A key feature was a custom synchronization module I developed to seamlessly sync all data from the POS terminal to a central server, ensuring data integrity. Corporate Education App: I developed an internal mobile app for a large corporation to deliver employee training. The platform featured engaging educational modules and progress tracking, making corporate training more accessible and effective. My Approach to Collaboration A Dedicated Partner for Long-Term Success: I am seeking to build a long-term relationship (1+ year) with a client. My goal is to become a trusted part of your team, deeply understanding your business goals to consistently deliver value and drive your project's success. Performance-focused Development: I write clean, efficient code to ensure your app is fast, reliable, and scalable for the future. Full-Cycle Expertise: I can handle the entire development process, from initial concept and UI/UX design input to deployment and ongoing maintenance. Proactive Communication: I believe in clear, consistent communication. I work closely with you to ensure your vision is perfectly executed and that you are updated every step of the way. If you are looking for a committed developer to build a great product and a lasting professional relationship, I would be excited to learn more about your project.

I work for a software company which is specialized in * Web development * Android development etc. and also my skill set allows me to work in these technologies as well. During this time, I've participated in many training workshops on various aspects related to technology and development that are relevant to my expertise

⭐ 9 yrs experience · ⭐ 30+ apps shipped · ⭐ Team Lead · ⭐ iOS & Android & Backend Senior mobile engineer and team lead with 9 years building production software — 6+ of them in cross-platform Flutter and React Native, backed by hands-on backend and native platform work. I don't just build screens; I architect apps that are scalable, maintainable, and ready for real users. I've led mobile teams and shipped apps across logistics, EV charging, fintech, e-commerce, and social — including work for Changi Airport (Singapore), EV-charging platform EMMA SG, and the food-rescue marketplace ResQ. I'm comfortable owning a product end to end: REST API design, auth and multi-role access (member/partner/admin), wallet and transaction logic, merchant catalogues, admin/CRM tooling, and CI/CD. What you get working with me: ✅ Clean, well-documented architecture — Clean Architecture, BLoC, Riverpod, MVVM, TDD ✅ Strong native depth (Android & iOS) for anything Flutter doesn't support out of the box — platform channels, custom plugins, maps, payments, deep links, push ✅ Full-stack capability — Node.js, Cloud Functions, Supabase/PostgreSQL, Firebase ✅ Reliable delivery — automated testing, GitHub Actions CI/CD, on-time releases ✅ Clear communication in English, Chinese, Cantonese & Vietnamese Tech: Flutter · Dart · React Native · Kotlin/Java · Swift · Objective-C · Node.js · Supabase/PostgreSQL · Firebase Tools: Xcode · Android Studio · VS Code · Git/Gitflow Whether it's a brand-new build, rescuing a stalled project, or scaling an existing app, I'd love to help. Tell me about your project and let's build something great.

AVAILABLE NOW 👋 Hi, I'm Nha — a Flutter Developer with 5+ years of experience building mobile, web, and backend solutions for startups and businesses. I specialize in creating high-quality applications that combine excellent user experiences, scalable backend systems, and clean architecture. My experience covers the entire product lifecycle—from UI/UX design and frontend development to backend architecture, deployment, and maintenance. I don't just write code. I actively collaborate with clients, suggest improvements, identify potential issues early, and help deliver products that create real business value. ## 📱 Mobile Development (Flutter) * Cross-platform development for Android, iOS, Web, and Desktop * Flutter & Dart * Clean Architecture * State Management: BLoC, Riverpod, Provider, GetX * Responsive & Pixel-Perfect UI * Performance Optimization * Offline-First Applications * Real-Time Features * Push Notifications * In-App Purchases * App Store & Google Play Deployment ### 🚗 Automotive Applications * Android Auto Integration * Apple CarPlay Integration * Navigation & Location-Based Features * Media & Audio Applications * Background Services & Connectivity ## 💻 Web Development * Next.js * React.js * TypeScript * Server-Side Rendering (SSR) * Static Site Generation (SSG) * Dashboard & Admin Systems * SEO Optimization * Responsive Web Design * API Integration ## ⚙️ Backend Development * Node.js * ExpressJS * RESTful APIs * GraphQL APIs * MongoDB * Authentication & Authorization * JWT & OAuth * Real-Time Applications * WebSocket * Database Design & Optimization * Third-Party Service Integrations ## ☁️ Backend-as-a-Service (BaaS) ### Firebase * Authentication * Firestore * Cloud Functions * Cloud Messaging (FCM) * Storage * Analytics * Crashlytics ### Appwrite * Authentication * Database * Storage * Functions * Notifications ### Supabase * Authentication * PostgreSQL Database * Storage * Edge Functions * Realtime Features * Row Level Security (RLS) ## 🎨 UI/UX Design * Figma * Adobe XD * Wireframing * Interactive Prototypes * Design Systems * User Flows * Mobile & Web Design * User-Centered Design * Design-to-Code Implementation ## 🗺️ Maps & Geolocation * Google Maps * TomTom Maps * Live Tracking * Route Planning * Geospatial Queries * Location-Based Services ## 💳 Third-Party Integrations * Stripe * PayPal * Social Login (Google, Apple, Facebook, Twitter) * Printer Integration * QR Code Systems * Analytics Platforms * Social Media APIs ## 🚀 DevOps & Deployment * GitHub Actions * Fastlane * CI/CD Pipelines * Automated Testing & Deployment * App Store Connect * Google Play Console ## 🧰 Tools & Workflow * Figma * GitHub * GitLab * Bitbucket * Jira * Trello * Postman * Android Studio * VS Code ## Why Work With Me? ✅ 5+ Years of Flutter Development Experience ✅ Full-Stack Development Capability ✅ UI/UX Design Background ✅ Experience with Android Auto & Apple CarPlay ✅ Strong Communication & Fast Response ✅ Clean, Maintainable, and Scalable Code ✅ Long-Term Product Mindset I am available for both short-term and long-term projects and enjoy working with teams that value quality, transparency, and continuous improvement. Let's build a product your users will love.

🔥 Senior Frontend & Mobile Developer — React Native | Flutter | Angular | AI Integration With 8+ years of hands-on experience, I build high-performance, cross-platform mobile and web applications that merge speed, reliability, and modern user experience. I specialize in clean architecture, scalable development, and AI-powered features — helping businesses launch faster, innovate confidently, and grow sustainably. ⸻ 📱 Mobile & Cross-Platform Expertise • Build modern, responsive apps using React Native, Flutter, and Angular • Develop custom native modules (Swift, Kotlin, Objective-C, Java) for hardware-level integrations • Engineer AI-driven features such as: • 🧠 Text-to-Video, Text-to-Image, Audio & Voice Processing • 🎙️ Speech recognition, real-time transcription, voice assistants • 🤖 OpenAI, Gemini, and custom ML model integration • Integrate Firebase, GraphQL, REST APIs, WebSockets, offline-first data • Full delivery pipeline: CI/CD (Fastlane, Bitrise) → App Store / Play Store publishing • Performance monitoring with Crashlytics, Sentry, and analytics tools ⸻ 🗺️ Newly Added Projects 📍 Mapbox Vessel Booking & Tracking App (Mobile + Web) • Built a real-time vessel tracking & booking system using React Native + Mapbox • Integrated weather layers, ocean particles, live vessel positions, and custom mapping logic • Built web version with Angular + Mapbox • Included live updates, notifications, and role-based dashboards 📺 TV App Using Expo • Developed a smart TV app using Expo • Optimized for remote navigation, large screen layout, and low-latency data display • Integrated streaming, analytics, and adaptive UI for TV platforms ⚽ Flutter Sports App — Livestream + Player Assessment + Marketplace • Built a sports livestreaming app in Flutter • Includes player performance scoring, analytics, and review workflows • Integrated features for buying/selling players, profiles, and team management • Supported real-time video, chat, and cloud storage ⸻ ⚙️ Core Tech Stack Languages: JavaScript, TypeScript, Dart, Swift, Kotlin Frameworks: React Native, Flutter, Angular AI & Native: T2V, T2I, Voice Processing, OpenAI, custom ML, native modules Mobile Tools: Firebase, SQLite, Fastlane, Crashlytics, CodePush, Expo Web Tools: RxJS, NgRx, Tailwind, SCSS DevOps: Git, Bitbucket, Bitrise, Postman, Sentry ⸻ 🚀 Advanced Capabilities • AWS, dynamic links, affiliate systems • In-app purchases with RevenueCat • Video calls, chat messaging, screen sharing, PiP mode • Healthcare integrations with biometric / IoT devices • Booking platforms, passkey authentication, real-time sync ⸻ 💡 Professional Values I believe great products are built through a mix of technical mastery, clear communication, and strong ownership. My mission is to convert complex ideas into impactful digital experiences — blending creativity, engineering excellence, and real business value.

A skilled software developer specializing in mobile and web application development. Notable projects include architecting and developing advanced Flutter applications and delivering efficient landing pages using React.js and Next.js. Also expertise spans API integration, responsive design, and software deployment, enhancing user experiences across platforms. Proficient in Flutter, React.js, Next.js, and Node.js, applying these technologies to create scalable and high-performance applications. Willing to work night and weekends to get the job done.