Twitter / X
Real-time social platform with petabyte-scale data and ML ranking systems.
4 Rounds
~14 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
Cloud Engineer
•
System Design
•
hard
Design the cloud infrastructure to support Twitter's timeline generation at scale, ensuring sub-200ms latency for 500 million daily active users.
#Scalability
#Caching
#Load Balancing
#Microservices
Cloud Engineer
•
System Design
•
hard
Design a global rate-limiting service for the X API that can handle millions of requests per second across multiple geographic regions.
#Rate Limiting
#Distributed Systems
#Redis
#Concurrency
Cloud Engineer
•
System Design
•
medium
Design a distributed caching layer for trending topics that can handle extreme traffic spikes (e.g., during the Super Bowl or a major global news event).
#Caching
#Redis
#Memcached
#Thundering Herd
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.