Interview Question
Design a production RAG platform for an enterprise knowledge base with strict access controls.
What the interviewer is testing
- End-to-end architecture
- Authorization
- Evaluation
- Operations
Real-World Sample Answer
I would approach “Design a production RAG platform for an enterprise knowledge base with strict access controls.” by clarifying the requirements first, then using these considerations: in a real interview, i would not jump straight to a technology choice. for “design a production rag platform for an enterprise knowledge base with strict access controls.”, i would first design ingestion and document lifecycle. then i would separate retrieval, ranking, and context construction and enforce document-level authorization. i would also define evaluation and grounding signals. finally, i would include observability, cost controls, and fallback behavior. i would make the assumptions explicit and explain what evidence or production signals would make me revisit the decision.. I would state my assumptions and defend the trade-offs rather than presenting the choice as universally correct.
What a Strong Answer Should Cover
In a real interview, I would not jump straight to a technology choice. For “Design a production RAG platform for an enterprise knowledge base with strict access controls.”, I would first design ingestion and document lifecycle. Then I would separate retrieval, ranking, and context construction and enforce document-level authorization. I would also define evaluation and grounding signals. Finally, I would include observability, cost controls, and fallback behavior. I would make the assumptions explicit and explain what evidence or production signals would make me revisit the decision.
Common Mistakes
- Treating the vector database as the whole architecture
- Applying authorization only after retrieval
- No evaluation strategy
Interviewer Follow-ups
- What assumptions would you clarify before committing to the design?
- What changes if the scale, reliability target, security requirement, or budget changes?
- What is the biggest failure mode in your proposed approach?