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SeanChiuGit/README.md

Hi 👋, I'm Sean Shiang-Ruei Chiu

Backend • Distributed Systems • AI Engineering • Developer Tools

🚀 Featured Engineering Projects

🔧 Universal AI Cover Letter Generator (Chrome Extension)

A production-ready AI tool that generates personalized cover letter PDFs from any job posting and any resume — using automatic provider detection and PDF.js parsing.

  • Auto-detects API provider from key (OpenAI, Groq, Anthropic, Gemini, etc.)
  • Parses PDF/TXT resumes → structured JSON
  • Generates professional US-letter PDFs (jsPDF)
  • Uses selectionText (no content scripts → works everywhere)

🔗https://github.com/SeanChiuGit/CoverLetterGenerator

⚡ Realtime Multiplayer Infrastructure

React · Firebase RTDB · WebSockets · OpenAI API · SQL

Event-driven architecture for multiplayer puzzle & strategy games.

  • Fault-tolerant sync
  • Optimized Firebase schema
  • Adaptive difficulty via AI
  • 20%–30% latency reduction

🔗 https://github.com/SeanChiuGit/Realtime-Multiplayer-Infrastructure

♜ AI-Powered Board Game Engines (Go Chess / T-Cube / Gomoku)

Python · C/C++ · Minimax + Alpha-Beta · TensorFlow Self-Play · Profiling

  • Custom rule engines
  • Search-based AI
  • Reinforcement self-play framework
  • Multithreaded simulation pipeline (3× speedup)

🔗 https://github.com/SeanChiuGit/tcube

📊 Verve AI: Backend Automation & Data Infrastructure

Python · Airflow · Pandas · Search Console API · Distributed Scripts

  • Automated backend workflows across 2000+ endpoints
  • Hourly ETL validation pipelines
  • Distributed indexing + async scheduling
  • Real-time dashboards for 8+ internal teams

🧰 Tech Stack

🧠 What I Like to Build

  • Distributed backend systems
  • AI-powered developer tools
  • Multiplayer infrastructure
  • Chrome extensions
  • Automation pipelines
  • Real-time or state-heavy applications
  • Compilers / interpreters / engines

I enjoy solving high-complexity engineering problems by mixing
systems fundamentals, automation, and AI-assisted development.

📫 Contact

🌟 “Good engineers solve problems. Great engineers design tools that solve the problems for them.”

Pinned Loading

  1. CoverLetterGenerator CoverLetterGenerator Public

    AI-powered Chrome extension that generates personalized cover letter PDFs from any job posting.

    JavaScript 1 1

  2. Realtime-Multiplayer-Infrastructure Realtime-Multiplayer-Infrastructure Public

    Event-driven multiplayer sync system with Firebase, WebSockets, and low-latency state architecture.

  3. SeanChiuGit.github.io SeanChiuGit.github.io Public

    Personal portfolio website showcasing engineering projects and interactive demos.

    HTML

  4. TCube TCube Public

    Turn-based board game engine with online multiplayer, minimax AI single-player, and a production release on Google Play.

    JavaScript 2

  5. Wavelength Wavelength Public

    Forked from swedenfish/Wavelength

    Multiplayer Wavelength-style guessing game with real-time sync, Firebase state management, and smooth animated UI.

    HTML

  6. PuzzleSite PuzzleSite Public

    Interactive puzzle platform with custom puzzle engine, hint system, progress saving, and responsive web UI.

    JavaScript