SDG Group Data Engineer Interview Questions
The questions to prepare for a SDG Group Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Explain how you select, build, operate, monitor, and troubleshoot data pipeline tools and platforms.
Describe hands-on experience selecting, implementing, operating, and troubleshooting real-time data processing frameworks.
Explain how to define, enforce, monitor, and safely change data retention policies across engineering pipelines and storage layers.
Explain which orchestration tools you use for data pipelines and how their capabilities influence your choice.
Discuss a data architecture you built, the trade-offs you made, and the main pipeline challenges you solved.
Tests ownership and communication through clear, maintainable documentation for data engineering work.
Return the second-highest distinct non-null salary from a single employee table.
Explain star and snowflake schemas, their tradeoffs, and when to use each in large-scale analytics systems.
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Calculate three-day rolling user activity averages and classify behavior trends with SQL window functions.
Compare RANK, DENSE_RANK, and ROW_NUMBER by applying each to ordered employee scores.
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