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Updated weekly · Last refresh Oct 17

NatWest Data Engineer Interview Questions

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

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1
SQL & Data ManipulationStart here. 4 questions + 3 drills · ~62 min
Join Record Count ReasoningMedium

Evaluates SQL join semantics and the ability to reason about row counts.

JoinsNatWest
SQL Join Types and PerformanceMedium

Evaluates SQL fundamentals and performance-aware query design.

performancesqljoin typesNatWest
Multiple SQL SolutionsMedium

Assesses flexibility in SQL problem-solving and ability to reason about tradeoffs.

JoinssqlAggregationsNatWest
SQL Window Functions ExperienceMedium
Practice
Practice drill

Use SQL window functions to rank regions by average 2024 yield within each country.

Window FunctionsJoinsData ManipulationErnst & YoungKBRMaximus Tech
SQL Query PracticeEasy
Practice
Recently asked
Practice drill

Return the second-highest distinct non-null salary from a single employee table.

null handlingsqldatabase queryingii3 ConsultingTTravelexIInfrrd
3rd Highest Salary SQLMedium
Practice
Practice drill

Find the third-highest distinct salary among employees whose last names contain both 'a' and 'c'.

Data Manipulationdatabase queryingAggregationsNatWest
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2
Pipelines5 questions · ~41 min
Spark Job LifecycleMedium

Assesses understanding of Spark execution flow from submission to processing.

sparkNatWest
Hadoop Processing Models ComparisonMedium

Assesses understanding of Hadoop compute options and when to use each.

hadoopNatWest
Spark Architecture and MemoryHard

Tests deep understanding of Spark internals and memory management for performance.

memory managementsparkarchitectureNatWest
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3
Behavioral & Leadership8 questions · ~65 min
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4
More topics2 questions · ~16 min
Optimizing Slow Python Record ProcessingMedium

Explain how to profile and optimize a slow Python script processing one million records by reducing algorithmic cost and removing bottlenecks.

Hash TablesArraysSortingNatWest
Python List ComprehensionsEasy

Tests ability to write concise, correct Python for data transformation tasks.

pythonNatWest

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