Professional networking platform with rich data and ML-driven recommendations.
4 Rounds
~21 Days
Hard
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Software Engineer
•
System Design
•
hard
Design the LinkedIn News Feed. Users should be able to see updates from their connections, companies they follow, and relevant ads. How do you handle high read/write volumes?
#Scalability
#Database Design
#Caching
#Message Queues
Software Engineer
•
System Design
•
hard
Design LinkedIn's connection system. How would you efficiently store and query 1st, 2nd, and 3rd-degree connections for hundreds of millions of users?
#Graph Databases
#Scalability
#Data Modeling
Software Engineer
•
System Design
•
hard
Design the LinkedIn Job Search and Recommendation system. How do you ingest millions of job postings and serve relevant recommendations to users in real-time?
#Search
#Machine Learning Infrastructure
#Data Pipelines
#Elasticsearch
Software Engineer
•
System Design
•
medium
Design a Profile View Counter. When someone visits a LinkedIn profile, the view count should increment. The user should be able to see who viewed their profile in the last 90 days.
#Stream Processing
#Database Design
#Aggregation
Software Engineer
•
System Design
•
medium
Design a Notification System for LinkedIn. Users can receive push notifications, emails, and in-app alerts for various events (messages, connection requests, job alerts).
#Microservices
#Message Queues
#Scalability
Software Engineer
•
System Design
•
hard
Design LinkedIn Messaging. Users should be able to send 1-on-1 messages and group messages. Messages should sync across multiple devices in real-time.
#WebSockets
#Database Design
#Real-time Systems
Software Engineer
•
System Design
•
hard
Design a system to detect fake profiles and bot activity on LinkedIn in near real-time.
#Stream Processing
#Machine Learning Infrastructure
#Security
Software Engineer
•
System Design
•
medium
Design a Typeahead Search (Autocomplete) for LinkedIn connections and global search.
#Trie
#Caching
#Search
Software Engineer
•
System Design
•
medium
Design a Distributed Rate Limiter for LinkedIn's public APIs to prevent abuse.
#Distributed Systems
#Caching
#Algorithms
Software Engineer
•
System Design
•
medium
Design a system to track and display trending hashtags on LinkedIn over the last 24 hours.
#Stream Processing
#Heavy Hitters
#Algorithms
Software Engineer
•
System Design
•
hard
Design the LinkedIn News Feed. How would you handle feed generation, ranking, and distribution for users with thousands of connections?
#Microservices
#Caching
#Fan-out
#Databases
Software Engineer
•
System Design
•
hard
Design LinkedIn's 'People You May Know' (PYMK) recommendation system.
#Graph Databases
#Batch Processing
#Machine Learning Infrastructure
#Hadoop/Spark
Software Engineer
•
System Design
•
medium
Design a system to track and display the number of profile views a LinkedIn member gets in real-time.
#Stream Processing
#Kafka
#Redis
#Time-series Data
Software Engineer
•
System Design
•
hard
Design the LinkedIn Job Search and Application system.
#Search
#ElasticSearch
#Scalability
#Database Consistency
Software Engineer
•
System Design
•
medium
Design a Notification System for LinkedIn that handles push, email, and in-app notifications.
#Pub/Sub
#Asynchronous Processing
#Rate Limiting
#Microservices
Software Engineer
•
System Design
•
medium
Design the LinkedIn Endorsements feature. How do you store and query who endorsed whom for what skill?
#Database Schema
#High Throughput
#Caching
Software Engineer
•
System Design
•
hard
Design a real-time messaging system (LinkedIn InMail).
#WebSockets
#Chat
#NoSQL
#Real-time
Software Engineer
•
System Design
•
hard
Design a system to detect and prevent spam or abusive content in LinkedIn posts and messages.
#Machine Learning Integration
#Stream Processing
#Rate Limiting
#Security
Software Engineer
•
System Design
•
medium
Design LinkedIn's Typeahead Search (Autocomplete).
#Trie
#Caching
#Low Latency
#Data Partitioning
Software Engineer
•
System Design
•
medium
Design a distributed rate limiter for LinkedIn's public API.
#Algorithms
#Redis
#Distributed Systems
#API Gateway
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.