Microsoft ML System Design Interview Questions
Practice the exact questions companies are asking right now.

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"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

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Calibrate LLM output to match Word formatting
Scenario You’re building an LLM-powered feature in a word processor (e.g., Microsoft Word) that generates content users can insert directly into a doc...
Optimize vector semantic search for an assistant
Scenario You own the vector semantic search layer for an AI assistant (e.g., Copilot). Users query across enterprise documents and/or product knowledg...
Infer user intent from typing in real time
Scenario You’re building an AI feature that observes a user’s typing stream in an editor/search box and predicts the user’s intent in real time. This ...
Explain Transformers and deploy an LLM safely
Answer the following LLM-focused questions. 1) Transformer basics - What problem does the Transformer architecture solve compared with RNNs? - Explain...
Design a RAG-based assistant service
Scenario You need to build a Retrieval-Augmented Generation (RAG) assistant for an enterprise product. It should answer questions using internal docum...
Design email ranking and summarization in Outlook
Scenario You are building ML features for an email client: 1) Debias email display order (inbox ranking) so users see the most relevant emails first w...
Design a video VLM end-to-end
Prompt: Design a video vision-language model (VLM) from scratch You are asked to design an end-to-end system to build a video vision-language model th...