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
•
Coding
•
medium
Implement a function that takes an IPv4 address string and a CIDR block string (e.g., '192.168.1.5', '192.168.1.0/24') and returns a boolean indicating if the IP belongs to the CIDR block.
#Networking
#Bit Manipulation
#Python
#Go
Cloud Engineer
•
Technical
•
medium
Walk me through the lifecycle of a DNS query when a user types x.com, focusing specifically on how global load balancing and Anycast routing are involved.
#DNS
#Load Balancing
#Anycast
#BGP
Cloud Engineer
•
Technical
•
easy
Explain the difference between an Application Load Balancer (ALB) and a Network Load Balancer (NLB). When would you explicitly choose an NLB for a service at X?
#Load Balancing
#AWS
#OSI Model
Cloud Engineer
•
Technical
•
hard
Explain BGP routing. How does X use BGP to announce IP prefixes for its global CDN network?
#BGP
#CDN
#Routing
#Networking
Difficulty Radar
Based on recent AI-sourced data.
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The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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Always explain your thought process before writing code or drawing architecture.