Microsoft interview questions

Practice system design interviews out loud with an AI interviewer, a shared whiteboard and a scorecard for your level.

• CodingMediumLeetCode 22

  Generate Parentheses

  Given a number n, generate all distinct well-formed parentheses strings formed from n pairs of opening and closing brackets. Return all valid combinations as a…

  Companies: Microsoft, Amazon, Bloomberg, Salesforce

  Backtracking · Bracket Sequences · Dynamic Programming · String

  Last reported Jan 2026

  Open workspace
• System designMedium

  Design a Ticketmaster-like ticketing system

  Companies: Microsoft

  System Design · System Design Fundamentals

  Last reported Jan 2026

  Open workspace
• System designMedium

  Peer-to-Peer File Distribution: Discovery, Chunked Transfer and Integrity Checks

  Companies: Microsoft

  System Design

  Last reported Jan 2026

  Open workspace
• ML system designMedium

  Calibrate LLM output to match Word formatting

  Companies: Microsoft

  ML System Design

  Last reported Jan 2026

  Open workspace
• Behavioral and leadershipDifficulty not specified

  Tell me about a time when you had to balance the needs of the customer with the needs of the business.

  Companies: Microsoft, Amazon, Modular, Oracle

  Last reported Jan 2026

  Open workspace
• Behavioral and leadershipDifficulty not specified

  Tell me about a time where you mentored a colleague

  Companies: Microsoft, Bloomberg, Confluent, Google +9

  Last reported Jan 2026

  Open workspace
• CodingMediumLeetCode 213

  House Robber II

  Given a circular array of nonnegative values where robbing two adjacent houses is forbidden, find the maximum total amount you can rob without alerting the…

  Companies: Microsoft, Amazon, Digitalocean

  Last reported Jan 2026

  Open workspace
• CodingDifficulty not specifiedLeetCode 337

  House Robber III

  Companies: Microsoft, Snapchat

  Last reported Jan 2026

  Open workspace
• System designMedium

  Design an online ticket booking system

  Companies: Microsoft

  System Design

  Last reported Jan 2026

  Open workspace
• CodingMediumLeetCode 54

  Spiral Matrix

  Traverse the m×n matrix in clockwise spiral order (right, down, left, up) and return the elements in that sequence. The core challenge is managing changing…

  Companies: Microsoft, Capital One, Liveramp, Meta +1

  Array · Matrix · Simulation

  Last reported Jan 2026

  Open workspace
• CodingDifficulty not specifiedLeetCode 1185

  Day of the Week

  Given day, month, and year, determine which weekday that date falls on (one of Sunday–Saturday) by applying calendar arithmetic (e.g., Zeller's congruence) or a library…

  Companies: Microsoft

  Last reported Dec 2025

  Open workspace
• CodingEasyLeetCode 169

  Majority Element

  Given an array of n integers, return the element that appears more than ⌊n/2⌋ times (the majority element is guaranteed to exist). The goal is…

  Companies: Microsoft, Amazon, Bloomberg, Coupang +1

  Array · Boyer–Moore Majority Vote Algorithm · Counting · Divide and Conquer

  Last reported Dec 2025

  Open workspace
• Object-oriented designDifficulty not specified

  Design a database query execution system

  Design a class-based system that allows users to execute queries on a database, including connection management, query processing, and result handling.

  Companies: Microsoft

  Last reported Dec 2025

  Open workspace
• CodingDifficulty not specified

  Task Assignment to Machines by Maximum Capacity

  Given n machines with different capacities and m tasks, assign each task to the machine with the highest available capacity at that moment. Return the…

  Companies: Microsoft

  Last reported Dec 2025

  Open workspace
• System designDifficulty not specified

  Design a Google Drive security scanner

  Design a system that can scan Google Drive files and detect sensitive content, returning alerts or reports when potentially sensitive files are identified.

  Companies: Microsoft, CrowdStrike

  Last reported Dec 2025

  Open workspace
• Object-oriented designDifficulty not specified

  Design a graph-based system

  Design a graph-based system with two types of nodes connected by edges. The system should support different node types and maintain relationships between them through…

  Companies: Microsoft

  Last reported Dec 2025

  Open workspace
• Object-oriented designDifficulty not specified

  Design a path validation system

  Design a system that validates file or URL paths, ensuring they meet specified criteria and security requirements.

  Companies: Microsoft

  Last reported Dec 2025

  Open workspace
• CodingEasyLeetCode 359

  Logger Rate Limiter

  Implement a logger that decides whether to print a message at a given timestamp: return true if the message hasn't been printed in the last…

  Companies: Microsoft, Amazon, Bloomberg, Google +3

  Data Stream · Design · Hash Table

  Last reported Dec 2025

  Open workspace
• System designMedium

  Open-Ended Design: Scope and Design a Data Center From a Vague Prompt

  Companies: Microsoft

  System Design · System Design Fundamentals

  Last reported Dec 2025

  Open workspace
• Behavioral and leadershipDifficulty not specified

  Tell me about the machine learning projects listed on your resume

  Companies: Microsoft

  Last reported Dec 2025

  Open workspace
• System designMedium

  Design a replicated key-value store with quorums

  Companies: Microsoft

  System Design

  Last reported Dec 2025

  Open workspace
• System designMedium

  Design device telemetry pipeline for real-time and batch

  Companies: Microsoft

  System Design

  Last reported Dec 2025

  Open workspace
• System designMedium

  Design streaming error-log counting with moving average

  Companies: Microsoft

  System Design

  Last reported Dec 2025

  Open workspace
• Object-oriented designDifficulty not specified

  Design a DNS caching system

  Design a DNS caching system for operating systems that minimizes network calls and can be deployed across billions of devices to handle diverse use cases…

  Companies: Microsoft

  Last reported Dec 2025

  Open workspace
• System designMedium

  Design a cloud console main page

  Companies: Microsoft

  Authentication & Authorization · System Design

  Last reported Dec 2025

  Open workspace