Airtel Digital Data Engineer Interview Questions
The questions to prepare for a Airtel Digital Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
Explain how RANK() and DENSE_RANK() handle ties differently in ordered SQL results such as leaderboards.
Assesses SQL reasoning for reconciliation and handling missing historical data.
Tests understanding of null behavior in SQL and ensuring accurate aggregated metrics.
Find the third-highest distinct successful Airtel Thanks data-pack amount using DENSE_RANK and a customer join.
Use CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.
Curefit
ReachMobi
IndeedAssesses your ability to design robust data engineering architectures and workflows.
Tests troubleshooting skills and reliability improvements for data pipelines.
Assesses experience designing and operating Spark Streaming for near real-time pipelines.
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Tests Java problem-solving across concurrency, data processing, and algorithmic challenges.