Iris software Data Engineer Interview Questions

The questions to prepare for a Iris software Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

ETL Performance Bottlenecks

Medium

Tests ability to diagnose and improve ETL pipeline performance.

performanceETLbottlenecks

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Handling Data Skew in Distributed Data

Hard

Tests advanced distributed performance troubleshooting and mitigation strategies for skew.

data skewnessdistributed systemsspark

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Handling Nulls and Corrupt Records

Medium

Tests data quality handling, resilience, and operational thinking in production pipelines.

Data Qualitynull handling

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Disagreeing on Architecture Decisions

Medium

Tests conflict resolution, collaboration, and sound architectural judgment.

Conflict Resolutionteam dynamicsarchitecture

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Broadcast vs Shuffle Joins in Spark

Medium

Tests Spark join strategy knowledge and performance tradeoffs.

Joinsperformancespark

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Optimizing Slow SQL Queries

Medium

Tests query optimization skills and understanding of execution behavior for join-heavy SQL.

Joinsquery optimizationsql

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