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
DevOps Engineer
•
System Design
•
hard
Design a multi-region Kubernetes cluster architecture for X's timeline service to ensure 99.99% uptime, even if an entire region goes offline.
#Kubernetes
#High Availability
#Disaster Recovery
#Global Load Balancing
DevOps Engineer
•
System Design
•
hard
Design the caching layer for the X timeline using Redis to handle millions of concurrent reads and thousands of writes per second.
#Redis
#Caching
#High Throughput
#Data Modeling
DevOps Engineer
•
System Design
•
hard
Explain how you would implement aggressive auto-scaling for stateless microservices to handle sudden viral events (like the Super Bowl) while minimizing idle compute costs.
#Auto-scaling
#KEDA
#Kubernetes
#Cost Optimization
DevOps Engineer
•
System Design
•
hard
We are moving away from managed cloud services to self-hosted solutions to save money. How would you design a highly available, self-hosted Kafka cluster across 3 data centers?
#Kafka
#Distributed Systems
#Bare-metal
#High Availability
DevOps Engineer
•
Technical
•
medium
Explain the difference between eventual consistency and strong consistency. Give an example of where you would use each within X's architecture.
#Distributed Systems
#CAP Theorem
#Databases
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.