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
Data Engineer
•
System Design
•
hard
Design the data pipeline for Twitter's View Count feature, ensuring real-time updates and high throughput.
#Stream Processing
#Kafka
#Redis
#Event Sourcing
Data Engineer
•
System Design
•
hard
Design a real-time trending topics system capable of processing millions of tweets per second.
#Heavy Hitters
#Stream Processing
#Distributed Systems
Data Engineer
•
System Design
•
hard
How would you architect the migration of a massive on-premise Hadoop cluster to GCP BigQuery with zero downtime?
#Cloud Migration
#BigQuery
#Dual Writes
#Data Validation
Data Engineer
•
System Design
•
hard
Design an ad-click attribution pipeline that handles late-arriving events and ensures exactly-once processing.
#Exactly-Once Semantics
#Watermarks
#Data Pipelines
Data Engineer
•
System Design
•
hard
Architect a streaming system to detect spam and bot activity in real-time as tweets are published.
#Machine Learning Pipelines
#Real-time Streaming
#Feature Engineering
Data Engineer
•
System Design
•
hard
Design a data lake architecture for storing, partitioning, and querying 10PB of daily tweet logs efficiently.
#Data Lake
#Partitioning
#Parquet
#Iceberg/Hudi
Data Engineer
•
System Design
•
hard
How would you design the batch and streaming data pipelines to generate features for the 'For You' timeline recommendation engine?
#Feature Store
#Lambda Architecture
#Graph Processing
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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Think Out Loud
Always explain your thought process before writing code or drawing architecture.