Henry Tsai

Full-stack personal platform combining a technical blog, AI-powered weekly digest, Australian IT job search engine, AI cover letter generator, and job application tracker.

• Built an AI digest pipeline that fetches content from OpenAI, Google AI, DeepMind, HuggingFace, and ArXiv, applies a GPT quality filter, then auto-generates summarised MDX posts with Mermaid diagrams
• Integrated Adzuna API to aggregate thousands of Australian IT jobs with location/type filters, save-to-Supabase, and one-click cover letter generation
• Built a streaming AI cover letter generator (OpenAI GPT-4o-mini) tailored to Australian HR standards, with history saved per user in Supabase
• Implemented GitHub OAuth via Supabase Auth, user dashboard, and application status tracker (Applied → Interview → Offer)

Cross-platform mobile app for discovering and tracking movies, featuring real-time search with debouncing, a custom trending algorithm, and a light/dark theme.

• Integrated TMDB API for live movie data and built a trending algorithm tracking user search patterns in Appwrite
• Implemented real-time search with debouncing to minimise API calls and improve UX
• Delivered consistent UI across iOS and Android using NativeWind (Tailwind CSS for React Native)

Full-stack job application tracker with server-side rendering, AI-assisted features, and containerised deployment targeting cloud platforms.

• Built with React Router v7 using SSR, hot module replacement, and optimised asset bundling
• Containerised with Docker for deployment to AWS ECS, Google Cloud Run, and Azure
• Designed a clean TypeScript-first architecture with 90%+ type coverage

Autonomous AI agent with function-calling capabilities, able to execute Python scripts, perform file operations, and run a calculator — all orchestrated by an LLM.

• Implemented OpenAI function calling to let the LLM decide which tools to invoke
• Built a modular architecture with separate modules for prompts, function registry, and config
• Designed the agent loop to handle multi-step reasoning and tool chaining

A near full-featured Reddit clone with communities, posts (text/image/video/link), comments, upvotes, user messaging, and subscriptions.

• Built core Reddit features from scratch: communities, nested comments, voting, and user subscriptions
• Implemented direct messaging and real-time chat between users
• Designed relational data models for Users, Submissions, Communities, and Comments in Rails