Open to opportunities

Senior Frontend Developer
& Web Engineer

I build fast, scalable web applications across the full JavaScript ecosystem — React, Vue, Next.js, and beyond.

View My WorkDownload Resume
Htet Ko

About Me

I'm a Senior Web Developer based in Nha Trang, Vietnam, with 5+ years building production applications across Southeast Asia's tech market.

My edge is range: I can architect a Next.js SSR app, integrate a Laravel API, write an Appium test suite, and lead the team shipping it — all in the same sprint.

I've worked across Myanmar, Cambodia, and remotely — in Chinese-based, Japanese-based, and international teams. I know how to communicate across cultures and time zones.

5+

Years Experience

10+

Projects Shipped

3

Countries Worked In

Skills & Technologies

Frontend

ReactVue.jsNext.jsNuxt.jsTypeScriptReact NativeTailwind CSSSCSS/SASS

Backend

Node.jsExpressPHP / LaravelRESTful APIsPython (Appium)

Databases

MySQLPostgreSQLMongoDBFirebase

Tools & DevOps

GitViteWebpackJestPostmanCursor / Copilot

Where I've Worked

Freelance Web Developer

Feb 2026 – Present

Self-Employed · Remote

  • Design and build custom web applications for clients using React, Vue.js, and Next.js — full lifecycle from requirements to deployment.
  • Deliver responsive, accessible frontends integrated with RESTful APIs and third-party services.

Senior Web Developer

Dec 2024 – Feb 2026

Lang Group · Phnom Penh, Cambodia

  • Built and maintained scalable web applications in React and Vue.js; enforced clean code standards across the team.
  • Developed automated iOS testing solutions using Python and Appium, cutting QA cycle overhead significantly.
  • Integrated complex RESTful APIs enabling seamless data flow between frontend and distributed backend services.

Senior Frontend Developer

Mar 2024 – Nov 2024

FLCT · Phnom Penh, Cambodia

  • Spearheaded frontend architecture of enterprise-level applications using React and Vue.js.
  • Ran technical feasibility reviews on UI/UX designs before implementation — preventing expensive pivots.

Team Leader

Oct 2023 – Mar 2024

Willtec Myanmar · Yangon, Myanmar

  • Led a cross-functional team of designers and developers on a Japanese e-learning platform.
  • Mentored junior developers and introduced modern frontend practices that improved team delivery velocity.

Senior Frontend Developer

Jan 2023 – Sep 2023

Illumination · Yangon, Myanmar

  • Built interactive UI components with React and Vue.js that improved user engagement.
  • Optimized page load performance through bundle reduction, asset compression, and code refactoring.

Junior Web Developer

Mar 2021 – Dec 2022

Doctoral Institute for EBP · Yangon, Myanmar

  • Collaborated with UX/UI teams to build responsive, accessible web pages and applications.
  • Maintained and expanded existing websites; established cross-browser testing standards.

Featured Projects

Spring Revolution Memorial
Full-Stack Web App

Spring Revolution Memorial

A digital memorial honoring the 7,500+ lives lost in Myanmar's Spring Revolution since the 2021 military coup. Each star in an interactive D3.js sky represents a real person — users can explore the star field, read individual stories, and leave flower or candle tributes with AI-generated messages. Bilingual in English and Burmese.

Next.jsPostgreSQLDrizzle ORMD3.jsTailwind CSSGemini AI
LexiGraph IELTS
Full-Stack Web App

LexiGraph IELTS

An interactive vocabulary upgrade tool for IELTS candidates that visualises word relationships through a force-directed band-score graph. Instead of flat definitions, it renders band-scored synonyms, collocations, and upgrade paths to help students improve their lexical resource score.

ReactTypeScriptD3.jsTailwind CSSVite
dynamic-json-generator
npm Package

dynamic-json-generator

Frontend developers waste hours waiting for backend APIs that aren't ready. This npm package lets you generate realistic, schema-driven fake JSON data instantly using @faker-js/faker — no backend required.

JavaScriptNode.jsFaker.jsnpm

✦ Published open-source — used by developers beyond personal projects

Dynamic JSON API Generator
Full-Stack Web App

Dynamic JSON API Generator

A web interface for the same problem — visually design your API schema, generate a mock endpoint URL instantly, and start coding your frontend the same day backend planning begins.

Next.jsPrismaPostgreSQLTypeScript

Other Projects

Thai Lottery GLO Hub
Full-Stack Web Application

Thai Lottery GLO Hub

Bilingual (Myanmar/English) Thai government lottery result checker for Myanmar people living in Thailand. Features real-time GLO official API integration, historical draw lookup, QR/barcode ticket scanning, Claude Vision AI OCR for ticket photo upload, blog system with lucky number articles, and direct advertiser banner placements. Built with Vite + React frontend and Express + TypeScript API deployed on Vercel.

ReactTypeScriptExpressViteTailwind CSSPostgreSQLVercel
Thai Lottery Reselling Platform
Full-Stack Web Application

Thai Lottery Reselling Platform

A web platform for Myanmar agents in Thailand to resell official Thai government lottery tickets. Agents upload ticket inventory; buyers browse and purchase via bank transfer; agents confirm payment and track profit/loss per draw date.

ReactTypeScriptExpressViteTailwind CSSPostgreSQLVercel
Foodies App
Web App

Foodies App

Recipe discovery app with ingredient-based search, category browsing, and a personal favorites system built server-side with Next.js for fast load performance.

Next.jsCSS Modules
E-Shop
Full-Stack eCommerce

E-Shop

End-to-end eCommerce platform with Laravel REST backend and React frontend. Features category navigation, search, user authentication, and cart management.

LaravelReactTailwind CSSMySQLMotion UI

Let's Build Something

I'm currently available for senior frontend roles and interesting freelance projects.

htetko510217@gmail.com
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