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
Product Manager
•
System Design
•
hard
Design the high-level architecture for X's 'For You' timeline recommendation engine.
#Machine Learning
#Recommendation Systems
#Scalability
Product Manager
•
System Design
•
medium
Design a rate-limiting system to prevent malicious bots from scraping X's API while allowing legitimate enterprise partners uninterrupted access.
#API
#Security
#Infrastructure
Product Manager
•
System Design
•
hard
Design the backend architecture for X Spaces (live audio) to support 1 million concurrent listeners in a single room.
#Audio
#Scalability
#Real-time Systems
Product Manager
•
System Design
•
hard
Design a system to detect and filter out spam in X Direct Messages in real-time.
#Spam Detection
#Real-time
#Machine Learning
Product Manager
•
System Design
•
hard
Design a system to handle viral spikes (e.g., Super Bowl, Election Night) to ensure X stays online and responsive.
#Scalability
#Load Balancing
#Infrastructure
Product Manager
•
System Design
•
hard
Design the backend for Community Notes to ensure real-time updates and consensus calculation across millions of users.
#Real-time
#Distributed Systems
#Algorithms
Product Manager
•
System Design
•
hard
Design a system to support X's trending topics. How do you ensure it is real-time, localized, and resistant to manipulation?
#Algorithms
#Real-time Systems
#Data Processing
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.