Top 21
Prep plan
Updated weekly · Last refresh Aug 30

Zensar Technologies Data Engineer Interview Questions

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

21questions
~3htotal time
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1
CodingStart here. 4 questions · ~35 min
Flatten Nested JSON PathsMedium
Practice

Flatten a deeply nested JSON-like object into path-value pairs using recursion and deterministic key construction.

Zensar Technologies
PySpark Transformations vs ActionsEasy

Tests your understanding of Spark execution semantics and how they impact performance.

performancebasicssparkZensar Technologies
Second Highest Salary Without WindowsMedium

Tests your ability to implement correct ranking logic without relying on SQL window functions.

Data WranglingpythonAlgorithmsZensar Technologies
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2
Pipelines7 questions · ~62 min
Secure AWS Pipeline Access DesignMedium

Approach for applying least privilege and security controls to an AWS-based data pipeline infrastructure.

InfrastructureSecurityQualityZensar Technologies
Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQualityZensar Technologies
Incremental Daily Batch Load StrategyMedium

Explain how to build and operate an incremental daily batch load with safe reruns, backfills, and data quality checks.

Batch ProcessingIncremental loadIdempotencyZensar Technologies
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3
Behavioral & Leadership9 questions · ~79 min
Receiving Feedback and ChangingEasy

Tests how a candidate receives feedback, self-assesses, and turns critique into measurable behavior change.

CommunicationLeadershipOwnershipZensar Technologies
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4
More topics1 question · ~9 min
Adding Match Indicator ColumnMedium

Tests your SQL and DataFrame manipulation skills for creating derived match indicators.

Data ManipulationZensar Technologies
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 21 questions plus 3 hands-on drills to finish this plan.