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Stop 21 · Build AI Engineer Portfolio ProjectsProjects · 2/8

RAG Chatbot with a Custom Knowledge Base

Part of the AI Engineer Roadmap

In short

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

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

More projects at this stop

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