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Senior Mobile Engineer with 6+ years building and shipping production apps, including 6 years specializing in Flutter/Dart across fintech, secure communications, and Web3 products. I work across the full lifecycle — architecture, feature development, testing, code review, CI/CD, and multi-store release management — and I’m comfortable owning features end-to-end from spec to production. I have strong expertise in Clean Architecture and modern state management (Bloc, Riverpod, GetX), secure data handling (encryption, KYC, secure storage), and third-party SDK integration. I also bring native iOS experience in Swift for platform-specific work (WatchKit, push extensions, HealthKit), and I actively contribute to real-world open-source codebases (Matrix and JMAP clients).…Senior Mobile Engineer with 6+ years building and shipping production apps, including 6 years specializing in Flutter/Dart across fintech, secure communications, and Web3 products. I work across the full lifecycle — architecture, feature development, testing, code review, CI/CD, and multi-store release management — and I’m comfortable owning features end-to-end from spec to production. I have strong expertise in Clean Architecture and modern state management (Bloc, Riverpod, GetX), secure data handling (encryption, KYC, secure storage), and third-party SDK integration. I also bring native iOS experience in Swift for platform-specific work (WatchKit, push extensions, HealthKit), and I actively contribute to real-world open-source codebases (Matrix and JMAP clients).

NGUYEN QUANG HUY

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Senior Mobile Engineer with 6+ years building and shipping production apps, including 6 years specializing in Flutter/Dart across fintech, secure communications, and Web3 products. I work across the full lifecycle — architecture, feature development, testing, code review, CI/CD, and multi-store release management — and I’m comfortable owning features end-to-end from spec to production. I have strong expertise in Clean Architecture and modern state management (Bloc, Riverpod, GetX), secure data handling (encryption, KYC, secure storage), and third-party SDK integration. I also bring native iOS experience in Swift for platform-specific work (WatchKit, push extensions, HealthKit), and I actively contribute to real-world open-source codebases (Matrix and JMAP clients).…Senior Mobile Engineer with 6+ years building and shipping production apps, including 6 years specializing in Flutter/Dart across fintech, secure communications, and Web3 products. I work across the full lifecycle — architecture, feature development, testing, code review, CI/CD, and multi-store release management — and I’m comfortable owning features end-to-end from spec to production. I have strong expertise in Clean Architecture and modern state management (Bloc, Riverpod, GetX), secure data handling (encryption, KYC, secure storage), and third-party SDK integration. I also bring native iOS experience in Swift for platform-specific work (WatchKit, push extensions, HealthKit), and I actively contribute to real-world open-source codebases (Matrix and JMAP clients).

Available to hire

Senior Mobile Engineer with 6+ years building and shipping production apps, including 6 years specializing in Flutter/Dart across fintech, secure communications, and Web3 products. I work across the full lifecycle — architecture, feature development, testing, code review, CI/CD, and multi-store release management — and I’m comfortable owning features end-to-end from spec to production.

I have strong expertise in Clean Architecture and modern state management (Bloc, Riverpod, GetX), secure data handling (encryption, KYC, secure storage), and third-party SDK integration. I also bring native iOS experience in Swift for platform-specific work (WatchKit, push extensions, HealthKit), and I actively contribute to real-world open-source codebases (Matrix and JMAP clients).

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Vietnamese

Fluent

English

Advanced

Work Experience

Senior Flutter Engineer at Vault22

September 1, 2024 - Present

SmartDev personal finance & wealth-management platform covering budgeting, debt/insurance tracking, and multi-asset investing (traditional, Shariah-compliant, digital assets). Developed and maintained core features in a cross-functional team of ~30 with focus on code quality, stability, and test coverage. Owned release management across iOS, Android, and Huawei AppGallery including iOS signing configuration, Android keystore signing, and migration of App Store Connect uploads to API-key authentication. Integrated KYC/identity verification via Smile Identity (document capture and liveness). Implemented bank linking using Lean SDK with WebView-based connection flow and token exchange between app and backend. Added reCAPTCHA Enterprise to protect authentication endpoints and debug token validation vs. a .NET backend. Built secure Google Sign-In with robust cancellation/error handling. Implemented client-side encryption and secure storage for sensitive financial and KYC data using Flutter

Senior Flutter Engineer (Matrix & JMAP) at Twake Chat & Tmail — Linagora

December 1, 2022 - September 30, 2024

Twake Chat: built an open-source decentralized chat client on the Matrix protocol (mobile + web from one Flutter codebase). Implemented real-time messaging, sync, and federation features using the Matrix SDK including end-to-end encrypted rooms. Configured Matrix push rules and built an iOS Notification Service Extension (NSE) to decrypt and render rich push notifications; integrated FCM and APNs. Implemented voice-message recording with segment-based WAV merging (no FFmpeg) and cross-platform MIME-type handling. Wrote Patrol-based end-to-end tests for WebView SSO/login flows. Tmail: cross-platform email client implementing JMAP protocol with team-backend extensions. Built mailbox, threading, search, and composer features for a public open-source codebase (linagora/tmail-flutter) with a team of ~20. Implemented offline caching/local persistence with Hive. Reviewed community contributions, triaged issues, and maintained CI/CD pipeline.

Flutter Developer / Product Owner at MoonFit — Giong Network

December 1, 2021 - December 31, 2022

Web3 move-to-earn lifestyle app rewarding users with tokens for physical activity around MoonBeast NFTs. Developed and optimized GPS run-tracking and Google Maps route processing for accurate distance and calorie calculations. Integrated Web3 wallets (MetaMask, WalletConnect, SubWallet) and on-chain reward/claim logic. Built a companion Apple Watch app using WatchKit, HealthKit, CoreLocation, and MapKit for workout tracking from the wrist. As Product Owner, researched and prioritized features, created roadmaps, and analyzed user data using Firebase and on-chain scanning tools. Led and mentored the mobile team and managed App Store and Google Play releases.

Flutter Developer at TILT — FPT Software

December 1, 2020 - December 31, 2021

Golf-coaching video-analysis app for iOS, Android, mobile, and tablet with an editing experience inspired by TikTok/Instagram. Reworked the video processing pipeline to reduce slow rendering by moving heavy work off the main thread with Isolates. Integrated real-time body-pose tracking (OpenPose, NVIDIA, Google AI) to visualize a player’s swing. Implemented annotation tools (drawing lines, audio voiceover) and side-by-side comparison playback for before/after analysis. Built local + AWS cloud storage for imported/recorded/edited video and configured AWS infrastructure. Handled App Store/Google Play releases, bug fixing, and code review.

Flutter Developer at AngelHub — VMO Group

December 1, 2019 - November 30, 2020

Tech-investment platform enabling deal-by-deal co-investment alongside funds and institutional partners. Built profile, dynamic forms, and payment features. Developed image/video upload with watermarking and investor/startup invitation flows. Integrated REST APIs and push notifications (FCM + APNs). Published to App Store and Google Play. Supported and mentored team members and helped evaluate new technologies.

Flutter Developer at SCM Connext (E-Commerce) — VMO Group

September 1, 2018 - January 31, 2020

Social-commerce ordering app for managing team organizations, online shopping, and delivery/pick-up. Built Home, Profile, Checkout, and Payment features. Implemented image/video upload with watermarking. Set up CI/CD with GitLab and Fastlane to automate builds and App Store/Google Play releases.