Booking Data Engineer Interview Questions

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

Cleaning Missing Values in Pipelines

Easy

Approach for handling missing values in a pipeline with data quality checks and repeatable transformations.

Data WranglingETLQuality

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Choosing Batch vs Real Time

Hard

Evaluate when a pipeline should use stream processing versus scheduled batch based on latency, cost, complexity, and data quality needs.

Stream ProcessingBatch ProcessingDependencies

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Top 10 Booked Destinations Query

Easy

Tests SQL proficiency with sorting, aggregation, and limiting results for analytics use cases.

RankingGroup ByAggregations

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Relational vs NoSQL

Easy

Tests your foundational data modeling and database selection knowledge.

JoinsData Modeling

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Longest Consecutive Sequence

Medium

Tests ability to implement an efficient algorithm for array sequence problems.

Hash TablesArraysSorting

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Finding Duplicates in a Dataset

Easy

Tests ability to detect duplicates and implement practical data validation logic.

Hash TablesArraysSorting

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