Wei
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Live Demos

Interactive demonstrations that run directly in your browser. Each demo maps to a service I offer.

Code Migration Viewer

Live

Interactive before/after comparison of real-world code migrations: jQuery to Vue, CSS to Tailwind, Webpack to Vite, legacy tables to AG Grid.

Demonstrates: Migration ExpertiseTry it →

GraphQL API Explorer

Live

A real Apollo Server endpoint. Write queries, execute them, see live responses. Full CRUD with Users, Posts, Comments.

Demonstrates: Backend ArchitectureTry it →

Data Pipeline

Live

Real CSV processor — paste data and watch it parsed, validated, transformed, and loaded. Catches missing fields, bad formats, duplicates. Not simulated.

Demonstrates: Data EngineeringTry it →

Site Performance Monitor

Live

Real metrics from your browser via Navigation Timing API. Pings this site's GraphQL endpoint and charts latency, p95, and uptime — actual data, not random numbers.

Demonstrates: ObservabilityTry it →

Markdown Editor

Live

Live split-pane editor with a hand-rolled parser — zero dependencies. Headings, bold, italic, code blocks, lists, links, blockquotes, all from scratch.

Demonstrates: Frontend CraftTry it →

Wei

Senior Full Stack Developer

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