Top 46

Prep plan

Updated weekly · Last refresh Oct 17

Publicis Sapient Data Engineer Interview Questions

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

46questions

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SQL & Data ManipulationStart here. 4 questions + 2 drills · ~53 min

SQL Duplicate DetectionEasy

Practice

Find duplicate customer profiles by grouping on identifying fields and returning only repeated records.

Group ByHavingAggregations

Publicis Sapient

SQL Query Performance TuningMedium

Tests your approach to diagnosing and improving query performance in analytics workloads.

Window FunctionsJoinsAggregations

Publicis Sapient

Optimizing Slow SQL QueriesMedium

Practice

Practice drill

Optimize a customer order aggregation query while preserving date, status, join, and spending filters.

Window Functionsdatabase optimizationJoins

Lam Research

Publicis Sapient

Atlanticus Services

Calculate Monthly Sales Growth by Product CategoryMedium

Practice

Practice drill

Calculate month-over-month sales growth for each product category using JOINs and window functions.

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Pipelines23 questions · ~192 min

Design Real-Time Feature PipelineHard

Design a real-time feature pipeline processing 120K events/sec into low-latency feature tables and warehouse models with replay and quality controls.

InfrastructureStream ProcessingOrchestration

Publicis Sapient

Star vs Snowflake SchemaEasy

Compare star and snowflake schemas in a warehouse pipeline, including structure and transformation trade-offs.

snowflake schemastar schemaData Modeling

Publicis Sapient

Describe a Complex Transformation PipelineMedium

Explain a complex ETL transformation you built, including the main challenges and how you handled them.

ETLData ModelingQuality

Publicis Sapient

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Coding5 questions · ~42 min

Write Code While MonitoredEasy

Tests your ability to perform reliably and communicate clearly in a monitored coding environment.

Hash TablesArraysStrings

Publicis Sapient

PySpark for Large Dataset ProcessingMedium

Tests your ability to write scalable PySpark code for big data transformations.

Hash TablesArraysSorting

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Explain PySpark TransformationsMedium

Tests your understanding of transformation design and implementation details in PySpark.

Hash TablesArraysSorting

Publicis Sapient

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Behavioral & Leadership14 questions · ~117 min

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The finish line: interview-readyComplete all 46 questions plus 2 hands-on drills to finish this plan.