Human Resources Management
Optimize all your business growth resources with innovative Human Resources Management, Automation Workflow, and Task Management features in one place.
Hau Le Xuan.
I build mobile and web products with React Native and Next.js, and turn design systems into code.
I don't just build screens. I build systems that scale, stay consistent, and are easy to change.
From design tokens in Figma to React Native and Next.js in production. Every component has a reason to exist.
What I do
Mobile Apps
React Native, Expo and NativeWind, tested on real devices
Web Apps
React and Next.js sites that are fast and accessible
Design Systems
Tokens, variables and components from Figma to code, in one source of truth
Frontend Architecture
Monorepos, shared packages and clear conventions that scale with the team
Performance & Accessibility
Core Web Vitals, semantic markup and keyboard-friendly interfaces
Selected Work
SonoWise | Sổ Nợ Online
An offline-first debt ledger app: track what people owe you, record repayments and see due dates, with no bank sync and no account needed.
TestCase Management
Manage all your manual and automated test cases and test run.
SDK Framework for iOS, Android
Recognize faces and text, convert image to digital documents, and extract data from receipts, cards and IDs through smart API.
Project Management
Let's invite your team to collaborate in one place where tasks are easy to manage, work progress is transparent. And your team's goals become easy to achieve.
How I work.
A few principles I keep on every project, from the first token to the last release.
Tokens first
Colors, spacing and type live as variables before any screen is drawn, so design and code share one source of truth.
Component-driven
Small, documented components that compose into pages. Fewer one-offs, faster changes.
Design–engineering bridge
I work in Figma and in code, so handoff is a conversation instead of a gap.
Ship in small steps
Short iterations with working demos, so direction can change early and cheaply.
Latest writing
A free cron job for side projects, with Google Apps Script
Apps Script · 8 min read
Vibe coding my portfolio end to end: Figma, Claude Code, Next.js and Vercel
Vibe coding · 8 min read
Building SwiftUI apps with Expo UI
React Native · 8 min read
