Design Chatbot Personalization Memory

Company: Microsoft

Role: Software Engineer

Category: ML System Design

Difficulty: medium

Interview Round: Onsite

Quick Answer: This question evaluates competency in designing per-user chatbot memory systems, including data modeling for durable memories, retrieval-augmented generation (RAG) workflows, candidate generation and ranking, conflict resolution, scalability under unbounded histories, latency constraints, and privacy-aware data lifecycle management.