Reply Data Engineer Interview Questions
The questions to prepare for a Reply Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Find the second highest salary in each department without using aggregate functions.
ReplyExplain SQL window functions and when to use ROW_NUMBER() versus DENSE_RANK() for ranked ticket analysis.
ReplyExplain how FULL OUTER JOIN and LEFT JOIN differ when reconciling customer records across systems.
ReplyUse a CTE, joins, and distinct aggregates to calculate Meta Logistics bookstore payment metrics.
Meta LogisticsUse RANK() and grouped revenue to find ServiceTitan's top three service categories in each region.
ServiceTitanCompute the exact sum of two signed integers using XOR, AND, shifts, and fixed-width two's-complement logic.
ReplyTests your understanding of Python iteration and how to reduce memory usage in data processing.
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Compare batch and streaming data processing, including when each fits best in a pipeline.
ReplyTests your understanding of how storage and compute interact for reliability in distributed data processing.
ReplyTests your ability to reason about Spark execution costs and optimize transformations to reduce shuffles.
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