Top 15
Prep plan
Updated weekly · Last refresh Aug 30

NCR Data Engineer Interview Questions

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

15questions
~2htotal time
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1
SQL & Data ManipulationStart here. 5 questions + 2 drills · ~64 min
Second Highest Trader SalaryEasy
Practice

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingNCR
Structured vs Unstructured Data BasicsEasy

Explain how structured and unstructured data differ in format, storage, and how easily they can be queried with SQL.

Data WranglingETLNCR
Normalization in Database DesignEasy

Tests your fundamentals of relational modeling and data integrity.

JoinsData WranglingData ModelingNCR
Third Highest Salary in SQLEasy
Practice
Practice drill

Find the third-highest distinct salary at NCR Voyix using DENSE_RANK and a department join.

sqlNCRDeutsche Bank
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
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2
Pipelines4 questions · ~35 min
Cleaning Missing Values in PipelinesEasy

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

Data WranglingETLQualityNCR
Explain ETL in Data EngineeringEasy

Explain the ETL process, why it matters, and how it fits into a practical data pipeline.

ETLOrchestrationQualityNCR
Designing a Data PipelineHard

Tests end-to-end pipeline design skills including ingestion, transformations, orchestration, and data quality.

ETLOrchestrationData ModelingNCR
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3
Behavioral & Leadership5 questions · ~44 min
Prioritizing Competing DeadlinesEasy

Tests prioritization under pressure, including trade-off judgment, stakeholder communication, and ownership of outcomes.

OwnershipDealing With AmbiguityPrioritizationNCR
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4
More topics1 question · ~9 min
Python Data Cleaning ProcessMedium

Tests practical data preprocessing skills including missing values, outliers, and schema consistency.

Hash TablesArraysStringsNCR
The finish line: interview-readyComplete all 15 questions plus 2 hands-on drills to finish this plan.