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Prep plan
Updated weekly · Last refresh Aug 30

Circana Data Engineer Interview Questions

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

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 7 questions + 2 drills · ~78 min
Top 3 Products by CategoryMedium
Practice

Use a CTE and ROW_NUMBER to return the top three Rakuten products by completed-order revenue in each category.

Window FunctionsRankingCTEsCircana
Window Ranking in Ticket QueuesMedium

Explain SQL window functions and when to use ROW_NUMBER() versus DENSE_RANK() for ranked ticket analysis.

Window FunctionsRankingrow_numberCircana
Optimized SQL for Retail ReportingMedium

Evaluates your ability to write performant SQL for demanding retail analytics use cases.

Window FunctionsJoinsAggregationsCircana
Analyze Customer Purchase Trends with Window FunctionsEasy
Practice
Practice drill

Calculate the monthly spending trends for customers using window functions and joins.

The Home DepotAvisoWorld Wide Technology
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
Pipelines42 questions · ~346 min
Manage Pipeline Infrastructure as CodeEasy

Approach for managing data pipeline infrastructure as code, including orchestration, drift control, and operational monitoring.

InfrastructureToolsQualityCircana
Design an ETL Pipeline with Data Quality ChecksMedium

Develop an ETL pipeline to process 10TB of daily sales data with strict data quality validations and orchestration requirements.

Deep LearningCircana
Model Analytics Warehouse for ELTEasy

Design a Snowflake ELT warehouse model for healthcare analytics with layered schemas, SCD handling, dbt orchestration, and strong data quality controls.

Data ModelingQualityCircana
Design Robust ETL Pipeline for E-Commerce AnalyticsMedium

Design an ETL pipeline to process 10TB daily from multiple sources while ensuring data quality and compliance with GDPR.

ETLQualityCircana
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3
More topics1 question · ~8 min
Dictionary Key Sorting LogicMedium

Tests your ability to translate a messy dict-manipulation requirement into correct, efficient code logic.

Circana
The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.