Y'hello, I'm

Zhi Jie Chen.

Fullstack developer.

Designing, developing and testing impactful applications. Experienced in fullstack technologies and currently working on nationwide ecommerce platforms in StudioForty9.

About

Hi, I'm Zhi, and I'm passionate about bringing ideas to life on the internet. I didn't dive into app development until later, having always thought I lacked the creative touch. However as with any skill at the start, I tried, practiced, cried and eventually I've found a real love for it.

Fast-forward to today, and I spend my days at StudioForty9 building Shopify storefronts and making sure they don't break — it's the best of both worlds. Shipping features and writing the tests to catch my own bugs.

Here's some of what I've been working with lately with the rest listed below:

  1. Shopify Liquid
  2. Playwright
  3. CSS / Tailwind
  1. JS / TS
  2. React
  3. Next.js
  1. Node
  2. Express
  3. Figma
Self profile image

Skills

Languages
JavaScriptTypeScriptHTMLShopify LiquidCSSSassPythonPHP
Frameworks
ReactTailwindNodeJSPlaywrightCypressNextJSExpressPrismaSymfony
Tools
GitMySQLSQLiteNeovim
Platforms
MongoDBFigmaSupabaseGitHubVercelLinux

Work Experience

StudioForty9

Junior QA Engineer / Frontend Developer

July 2024 - Present

  1. Developed and customised Shopify theme sections, templates, and reusable components across 10+ client e-commerce stores using Shopify Liquid, JavaScript, CSS, and Shopify Theme Customizer, delivering responsive features aligned with Figma designs and business requirements.
  2. Implemented custom Shopify frontend features including metafields, discount logic, mini-cart selectors, PDP galleries, and responsive UI fixes, improving user experience and reducing homepage flashing by 30% through performance-optimised asset loading.
  3. Customised and extended third-party integrations including Rebuy, Advanced Commerce / Graphene, and Flickity, enabling seamless feature delivery while preserving site stability across ongoing releases.
  4. Built and maintained 300+ Playwright end-to-end regression tests across 30+ Shopify repositories, establishing scalable automated QA coverage and significantly improving release confidence for new features and store launches.
  5. Designed comprehensive Qase test suites covering customer journeys, checkout flows, PDP/PLP validation, shipping rates, and gift card functionality, strengthening pre-release defect detection.

Personal Ventures

I enjoy working on projects as an outlet for my creativity. As well as that, it provides a fun way to learn new technologies or improve on my current skills (At least that's what I tell myself before my code breaks). Below are some of my favourite ones.

Mern Estate

Fullstack responsive real estate website with user authentication, post CRUD functionality with Prisma and MongoDB, map view with react-leaflet, protected routes with react-router-dom and Node Express backend server.

React

MongoDB

Node

Express

Primsa ORM

Trace project homepage

Trace

Website for volunteers to record their efforts and rewarded redeemable crypto credits. They can redeem this credits in future to request assistance of their own. Implemented custodial wallets with psuedo meta-transactions along with ERC-20 smart contract created in OpenZeppelin.

React

TypeScript

Figma

Supabase

Solidity

Trace project homepage

Older Projects

Next-Post

Fullstack application built with NextJs and MongoDB. CRUD via custom NextAPI. OAuth and normal authentication.

NextJSMongoDBNextAuth

Let's Chat

My inbox is always open — like a tab I forgot to close. Feel free to reach out anytime.

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