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 daily.

11questions

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SQL & Data ManipulationStart here. 7 questions + 1 drill · ~81 min

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

RANK vs DENSE_RANK in LeaderboardsEasy

Explain how RANK() and DENSE_RANK() handle ties differently in ordered SQL results such as leaderboards.

Window FunctionsRankingData WranglingAAirtel Digital

SQL for Closing Balance ReconciliationHard

Assesses SQL reasoning for reconciliation and handling missing historical data.

sqltransactionsdata integrityAAirtel Digital

SQL and Unix Scenario QuestionsMedium

Evaluates practical SQL and Unix problem-solving for real-world data tasks.

sqlAAirtel Digital

Find the third-highest distinct successful Airtel Thanks data-pack amount using DENSE_RANK and a customer join.

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Pipelines4 questions · ~41 min

Assesses your ability to design robust data engineering architectures and workflows.

Debugging Failed Data JobsMedium

Tests troubleshooting skills and reliability improvements for data pipelines.

DebuggingAAirtel Digital

Spark Streaming PipelinesMedium

Assesses experience designing and operating Spark Streaming for near real-time pipelines.

streamingsparkAAirtel Digital

Optimize Spark Job PerformanceHard

Evaluates ability to tune Spark jobs for performance and efficiency at scale.

sparkoptimizationAAirtel Digital

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