Mobile App & Frontend Developer

Building Exceptional Mobile Apps

Mobile & Frontend Developer with 4+ years of professional experience building high-performance web and mobile applications. Currently at SysOne Technology, developing secure authentication systems, advanced mobile features, and enterprise monitoring solutions.

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4+
Years Exp.
10+
Major Projects
2M+
App Users
Get to know me

About Me

Passionate developer crafting exceptional mobile experiences

Doan The Duy

My Journey

I'm a passionate Mobile and Frontend Developer with 4+ years of professional experience building high-performance web and mobile applications for e-commerce, retail, and enterprise sectors.

Currently at SysOne Technology, I'm developing secure authentication systems (SSO, WebAuthn, Passkey, Biometric), advanced mobile features with OCR and native modules, and enterprise monitoring solutions with dynamic dashboards and real-time data visualization.

Previously at MWG (thegioididong.com), I successfully launched the Avakids e-commerce app and developed loyalty platform features serving millions of users.

Mobile First

Expert in React Native cross-platform development

Clean Code

Maintainable & scalable architecture

Innovation

Constantly learning & adopting new tech

Career Path

Work Experience

Crafting exceptional mobile experiences across leading tech companies

Current
SysOne Technology logo

Mobile App & Frontend Developer

SysOne Technology

Jun 2025 - Present•6 mos
  • Implemented comprehensive authentication solutions including SSO, Passkey FIDO WebAuthn, biometric authentication, and TOTP
  • Developed camera OCR functionality and custom native modules for advanced image gallery picker
  • Built enterprise monitoring system with dynamic layout customization and real-time data visualization
  • Architected micro frontend architecture using Vite.js for modular, scalable web applications
  • Built SDK for mobile team and partners with UI-kit, authentication methods, and documentation website using Next.js and MDX

Tech Stack

React NativeReactTypeScriptVite.jsSSOWebAuthnMicro FrontendNext.js
MWG (thegioididong.com) logo

Mobile Developer

MWG (thegioididong.com)

Jun 2022 - May 2025•3 yrs
  • Developed utilities such as ordering, cart, promotional campaigns, distribute gifts, vouchers, customer surveys, mini games for Quà Tặng VIP loyalty app
  • Managed product listings, categories and search on Avakids app, contributed to successful launch in September 2024
  • Applied Federated Login and integrated IdP for authentication and account linking across MWG app ecosystem
  • Coordinated with design, business analyst, and backend teams to clarify requirements and optimize performance

Tech Stack

React NativeTypeScriptGraphQLRedux SagaSocketFCMApollo Client
FADO Vietnam logo

Frontend Developer

FADO Vietnam

May 2021 - Jun 2022•1 yr 2 mos
  • Implemented product listing, landing page, promotions, wishlist, and tracking features in FADO mobile app
  • Developed sales order management system, statistics, and profit/revenue reporting system for Ratraco Railway Logistics
  • Built web admin panel and internal systems using modern frontend frameworks

Tech Stack

React NativeExpoNext.jsVue.jsTailwind CSSRedux Toolkit
4+
Years Experience
3
Companies
10+
Apps Launched
2M+
Users Impacted
Portfolio

Featured Projects

Showcasing my work building high-performance mobile applications

🔐
2024

Enterprise Auth System

SysOne Technology

Full-stack authentication platform with SSO, WebAuthn, biometrics, and enterprise monitoring dashboards

50K+users
React NativeNext.js+1
🛍️
2024

Avakids E-commerce

MWG

Leading kids products marketplace with 2M+ users

2M+users
React NativeGraphQL
📦
2024

SDK Platform

SysOne

Comprehensive mobile SDK with documentation portal

React NativeMDX
🎁
2023

Loyalty Program

MWG

Rewards platform with mini-games and federated login

1.5M+users
React NativeSocket.io
🌏
2022

FADO Marketplace

FADO Vietnam

Cross-border shopping with multi-language support

React NativeExpo
📊
2022

Logistics Dashboard

FADO

Railway logistics management and reporting system

Next.jsVue.js
🤖
2024

AI Chat Assistant

Personal Project

Intelligent chatbot with natural language processing

PythonOpenAI+1
10+
Projects Completed
20+
Technologies Used
3.5M+
Total Users

Technical Skills

Comprehensive expertise across mobile development, frontend technologies, and modern development tools

React Native

Mobile

Primary Skill

TypeScript

Language

React.js

Frontend

Ne

Next.js

Frontend

Vu

Vue.js

Frontend

Vi

Vite.js

Build Tool

Re

Redux Saga

State Management

Re

Redux Toolkit

State Management

Gr

GraphQL

API

Ap

Apollo Client

API

RE

REST APIs

API

Ta

Tailwind CSS

UI

MU

MUI

UI

An

Ant Design

UI

SS

SSO

Security

We

WebAuthn

Security

Pa

Passkey

Security

TO

TOTP

Security

Je

Jest

Testing

Re

React Query

Data Fetching

So

Socket.io

Real-time

FC

FCM

Push Notifications

Mi

Micro Frontend

Architecture

Na

Native Modules

Mobile

All Technologies

React NativeTypeScriptReact.jsNext.jsVue.jsVite.jsRedux SagaRedux ToolkitGraphQLApollo ClientREST APIsTailwind CSSMUIAnt DesignSSOWebAuthnPasskeyTOTPJestReact QuerySocket.ioFCMMicro FrontendNative Modules

Let's Work Together

Have a project in mind? I'd love to hear about it. Let's build something amazing together.

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