Full Stack Developer

Hi, my name is Han Qing. I am a software engineer with 3 years of working experience with experience developing for both the front end as well as the backend.

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Tech

Languages

  • TypeScript
  • Go
  • Python
  • SQL

Frontend

  • React
  • Next.js
  • styled-components
  • Tailwind CSS

Backend & cloud

  • Node.js
  • FastAPI
  • AWS Lambda
  • Docker
  • PostgreSQL

Tooling & testing

  • Vite
  • Vitest
  • Playwright
  • Storybook
  • GitHub Actions

Projects

HQ-UI & design system

The component library and token-based design system this site is built with. WCAG-checked color, type, and layout tokens are shared between the library and this app through one dependency-free package.

  • React
  • TypeScript
  • styled-components
  • Vite
  • Vitest
GitHub ↗npm ↗

crashpath

Paste a raw stack trace and see the failure as a path through your codebase graph. Post-mortem debugging that is local-first, with zero setup.

  • TypeScript
  • Hono
  • Tree-sitter
  • MCP
GitHub ↗

quant-cockpit

Trade journal and backtest-to-live reconciliation for systematic traders. A monorepo with a Next.js web app, FastAPI backend, and a generated, typed API client.

  • Next.js
  • FastAPI
  • Python
  • Docker
  • OpenAPI
Private build — case study coming

Flashcards

A flashcard app in two halves: a Go backend deployed as an AWS Lambda with SAM, and a React single-page app driven by TanStack Query.

  • Go
  • AWS Lambda
  • SAM
  • React
  • TanStack Query
Backend ↗Frontend ↗