Susquehanna International Group Data Engineer Interview Questions
The questions to prepare for a Susquehanna International Group Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Explain Python reference counting, cyclic garbage collection, and how memory is reclaimed.
Susquehanna International GroupExplain how Python decorators wrap functions and implement a custom decorator that logs execution time.
Susquehanna International GroupCompare generator expressions and list comprehensions by memory usage, execution model, and when each is preferable.
Susquehanna International GroupHow to choose between row-oriented and column-oriented formats across different stages of a data pipeline.
Susquehanna International GroupApproach for adding data quality checks, observability, and production monitoring to a data pipeline.
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Explain how pandas BlockManager groups columns by dtype and how consolidation, copies, views, and dtype changes affect DataFrame memory.
Susquehanna International GroupOptimize million-row Pandas calculations by replacing Python row loops with vectorized operations, while managing memory, profiling, and unavoidable cus...
Susquehanna International GroupExplain how to tune a slow PostgreSQL query that joins several large transaction tables using indexes, join strategy, and partitioning.
Susquehanna International GroupUse joins, aggregation, and CASE logic to convert technical event data into concise audience-friendly summaries.
Susquehanna International GroupFind the second highest salary in each department without using aggregate functions.
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Cisco Restaurant + BarCalculate Pearson correlation for each category while excluding incomplete value pairs.
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