Cognizant
American multinational information technology services and consulting company.
4 Rounds
~21 Days
Medium
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 a batch ETL pipeline to migrate 500GB of daily transactional data from an on-premise Oracle database to Snowflake on AWS. What tools and architecture would you use?
#AWS
#Snowflake
#Data Migration
#ETL Architecture
Data Engineer
•
System Design
•
hard
Design a real-time streaming pipeline to process clickstream data from a retail client's website and update a live dashboard.
#Streaming
#Kafka
#Spark Streaming
#Real-time Analytics
Data Engineer
•
System Design
•
hard
Design a system to ingest and process daily healthcare claims data (HIPAA compliant). The data arrives as CSVs in an SFTP server.
#Healthcare
#Security
#ETL
#Cloud Architecture
Data Engineer
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System Design
•
medium
Design a CI/CD pipeline for deploying Data Engineering assets (Airflow DAGs, Snowflake SQL scripts, PySpark code).
#CI/CD
#DevOps
#Git
#Jenkins/GitHub Actions
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
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.