Nasdaq Data Engineer Interview Questions
The questions to prepare for a Nasdaq Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Find the first non-repeating character in a string using frequency counting and a second pass in O(n) time.
NasdaqDeduplicate pipeline events and aggregate success counts, failure counts, and durations using a single Python pass.
NasdaqAggregate annual sales by employee and identify the employee-year with the highest total.
NasdaqFilter valid market records, calculate average prices by symbol, and explain a safe Git workflow for the data task.
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Diagnose Spark data skew and reduce shuffle cost using AQE, partitioning, salting, broadcasting, and pre-aggregation.
NasdaqCompare star and snowflake schemas, then choose between denormalized reads and normalized writes for high-volume financial reporting.
NasdaqExplain how you improved an ETL pipeline with data quality checks and validated its correctness, completeness, and reliability.
NasdaqTests data modeling for temporal history and audit requirements in market data systems.
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