dat’s little worldA little code. A little wonder.
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Dat Dang’s World

Fullstack Developer

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A small cottage with a moss-green roof, flower boxes, and a wooden front doorAbout me

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A little corner for big ideas.
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A little about me

Ho Chi Minh City, Vietnam

Dat Dang

Fullstack Developer

5 years of professional frontend experience

Fullstack Developer with five years of professional frontend experience, specializing in React, Next.js, and TypeScript. Experienced in building and delivering web applications from responsive interfaces to backend workflows, database integration, and deployment.

  • ~200monthly bookings for a commercial booking platform
  • 2,000+average monthly active users on corporate websites
  • 12,000+students served by EdTech platforms I’ve supported
View Resume See my toolkit ↓

DAT_OS

My developer toolbox
dat / workspace / skillsBack to the room

Languages

  • TypeScript
  • JavaScript
  • HTML
  • CSS

Frontend

  • React
  • Next.js (SSR/SSG)
  • Framer Motion
  • MathJax

Backend & Services

  • Node.js
  • NestJS
  • Prisma
  • PostgreSQL
  • Redis
  • Firebase
  • Directus
  • JWT

State & API Data

  • TanStack Query
  • Redux
  • Zustand
  • REST APIs
  • GraphQL

UI & Styling

  • Tailwind CSS
  • Ant Design
  • Mantine
  • Material UI (MUI)
  • Figma

Performance & SEO

  • Core Web Vitals
  • PageSpeed Insights
  • Google Rich Results Test

Monitoring

  • Sentry
  • Grafana

Frontend Testing

  • Jest
  • React Testing Library
  • Playwright

Tools & DevOps

  • GitHub Actions
  • Postman
  • DBeaver
  • Feature Flags
  • Docker
  • Vercel

AI-Assisted Coding

  • OpenAI Codex
10 directories · 41 everyday toolsMade to work together.

A few steps further, my everyday tools.

Vietnam Silicon — Engineering Experience Dossier

Frontend Developer

VIETNAM SILICON CO., LTD. | Ho Chi Minh City, Vietnam

Mar 2025 – Mar 2026

  • Owned frontend delivery for SEO-focused corporate websites in Vietnam and Thailand, from Figma handoff through launch.
  • Built maintainable, responsive React interfaces for desktop and mobile, translating design requirements into reusable UI components and animations.
  • Launched and optimized both corporate websites, which averaged 2,000+ active users per month and supported regional branding and recruitment goals.
  • Collaborated within a 33-member team on a web application for Thailand's Ministry of Agriculture and Cooperatives.
  • Developed centralized dashboards and interactive climate and forest visualizations for data exploration and reporting.
  • Built a proof of concept with an AI agent and chat-based querying to evaluate feasibility and guide implementation planning.

Frontend Developer

Geniebook | Ho Chi Minh City, Vietnam

Aug 2022 – Sep 2024

  • Delivered learning management, coursework, administration, and interactive worksheet interfaces with REST API integration.
  • Managed server state with TanStack Query and UI state with Redux and Zustand. Applied memoization and lazy loading for maintainability and performance.
  • Redesigned responsive desktop and mobile experiences. 20% increase in user engagement associated with responsive redesign.
  • Developed interactive worksheets emphasizing usability and accessibility.
  • Worked with a 60-member cross-functional team across Singapore and Indonesia to deliver 10+ LMS features. 40% increase in teacher engagement within three months, as a team result.
  • Supported workflows for 50+ administrators and teachers. 12,000+ students supported by platform workflows.

Frontend Developer

FPT Software | Ho Chi Minh City, Vietnam

Jan 2021 – Aug 2022

  • Built and maintained an internal product management system. ~500 employees served by an internal management system.
  • Improved order-processing workflows. 35h order-processing time saved per month.
  • Developed machine-monitoring dashboards with clearer data visualizations. 25% improvement in issue identification and resolution speed.

Best Student AwardFPT AI Conference

FPT University

Bachelor Degree

Software Engineering

Start date
Graduation date

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