Twitter / X

Twitter / X

Real-time social platform with petabyte-scale data and ML ranking systems.

4 Rounds ~14 Days Hard
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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

Backend Engineer Coding medium

Write a function to implement an LRU (Least Recently Used) Cache. This is often used for caching user profiles in memory.

#Linked List #Hash Map #Design
Backend Engineer Coding medium

Implement a Trie (Prefix Tree) to support autocomplete for user handles (@mentions).

#Trie #Design #String
Backend Engineer Coding hard

Implement a basic LFU (Least Frequently Used) Cache.

#Hash Map #Linked List #Design

Difficulty Radar

Based on recent AI-sourced data.

Meet Your Interviewers

The "Standard" Interviewer

Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

Simulate

Unwritten Rules

Think Out Loud

Always explain your thought process before writing code or drawing architecture.

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