👋 Hi, I’m Andy Fan — AI Engineer and Full-Stack Developer passionate about bridging enterprise-grade backend engineering with modern AI systems.

Welcome to my personal tech blog, built with Minimal Mistakes.
Here, I’ll document my learning journey and share insights from my daily work in AI Engineering, Multi-Agent Systems, and SaaS architecture.

🧠 What You’ll Find Here

I’ll be writing about topics such as:

  • RAG System Architecture — from encoder–decoder fine-tuning to hybrid retrieval design
  • ABP.io Multi-Tenant SaaS Development — modular backends, OpenIddict, and tenant isolation
  • LangGraph + FastAPI — building reasoning-driven AI agents with orchestration workflows
  • Cloud Deployment & DevOps — containerization, CI/CD pipelines, and GCP deployments

🚀 Why I Started This Blog

After 13+ years of enterprise software experience, I’m now focused on AI platform engineering — connecting backend scalability with generative intelligence.
This blog is my way of sharing experiments, lessons learned, and building in public.

Thanks for visiting, and feel free to explore!
👉 About Me · Demo Site

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