RAG Chatbot with a Custom Knowledge Base

Summary

A production-quality RAG system over a real document set — the single most commonly requested AI engineer portfolio piece because it maps directly to real hiring needs.

How to Learn This

1Use a genuinely useful knowledge base (docs, a book, a company's public content).
2Add source citations and a clear 'I don't know' fallback for unanswerable questions.
3Include a short write-up of your chunking, retrieval and evaluation choices.

End-to-End ML Pipeline with Deployment

Fine-Tuned LLM for a Niche Domain

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