LinkedIn Interview Questions and Guide
Classic data structures and algorithms plus feed, search and messaging style design problems.
The LinkedIn interview loop
- Recruiter screen
- Technical phone screen
- Onsite: coding, system design, host manager, culture
LinkedIn interview questions
- Design WhatsApp
- Design a News Feed
- Design a Notification System
- Design Search Autocomplete
- Design Meta Post Privacy
- Design Twitter Search
- Design Google News
- Design a Distributed Message Queue
- Minimum Window Substring
- Maximum Subarray (Kadane's Algorithm)
- Max Consecutive Ones III
- Subarray Product Less Than K
- Valid Triangle Number
- Isomorphic Strings
- LFU Cache
- Repeated DNA Sequences
- Shortest Word Distance
- Shortest Word Distance II
- Merge Two Sorted Lists
- Evaluate Reverse Polish Notation
- Exclusive Time of Functions
- Max Stack
- Binary Tree Level Order Traversal
- Minimum Knight Moves
- Kth Largest Element in an Array
- Find K Pairs with Smallest Sums
- Search in Rotated Sorted Array
- First and Last Position in a Sorted Array
- Find K Closest Elements
- Search in Rotated Sorted Array II
- Valid Perfect Square
- Find Smallest Letter Greater Than Target
- Lowest Common Ancestor of a Binary Tree
- Maximum Depth of a Binary Tree
- Symmetric Tree
- Binary Tree Zigzag Level Order Traversal
- All Nodes Distance K in Binary Tree
- Find Leaves of Binary Tree
- Create Binary Tree From Descriptions
- Find Largest Value in Each Tree Row
- Validate a Binary Search Tree
- Lowest Common Ancestor in a BST
- Closest Binary Search Tree Value
- Closest Binary Search Tree Value II
- Accounts Merge
- Graph Valid Tree
- Word Ladder
- Is Graph Bipartite?
- Number of Connected Components in an Undirected Graph
- Possible Bipartition
- Find the Celebrity
- Longest Palindromic Subsequence
- Maximum Product Subarray
- Permutations
- Permutations II
- Factor Combinations
- Can Place Flowers
- Merge Overlapping Intervals
- Insert Interval
- Replace Words
- Partition to K Equal Sum Subsets (Bitmask DP)
- Pow(x, n) — Fast Exponentiation
- Integer to English Words
- Bulb Switcher
- Valid Number
- Max Points on a Line
- Robot Bounded In Circle
- Sum of Square Numbers
- Design a Content Popularity Tracker
- Design an In-Memory Pub/Sub Message Broker
- Design a Notification Service
- Design a Bounded Blocking Queue
- Tell me about critical feedback you received
- Why are you leaving your current role?
- Tell me about working with a difficult stakeholder
- Tell me about delivering a project across multiple teams
- Tell me about a time you led without formal authority
- Tell me about a time you made the case for paying down tech debt
- Your team is split on a technical direction. What do you do?
- Tell me about a time you changed your mind
- Refactor a Legacy Module with AI
- Review an AI-Generated Pull Request
- Ship a Feature Behind a Flag with a Data Migration