Top 13
Prep plan
Updated weekly · Last refresh Aug 30

Analysis Group Data Engineer Interview Questions

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

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1
PipelinesStart here. 5 questions · ~40 min
QA Dataset Before HandoffMedium

Tests end-to-end QA practices for healthcare datasets, including checks for accuracy, completeness, and reproducibility.

ToolsData ModelingQualityAnalysis Group
Document Datasets and Analysis StepsEasy

Tests documentation discipline and reproducibility for collaborative consulting analytics.

DependenciesData ModelingQualityAnalysis Group
Conduct Data and Code Quality ChecksEasy

Tests quality control practices that reduce errors in Analysis Group healthcare analytics workflows.

ToolsData ModelingQualityAnalysis Group
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2
SQL & Data Manipulation7 questions + 3 drills · ~86 min
Optimize a Slow SQL QueryHard

Tests performance troubleshooting, query optimization, and validation of results after changes.

JoinsData WranglingAggregationsAnalysis Group
Build Patient Demographics SummaryMedium

Tests ability to design SQL/R/Python logic for cohort summaries used in Analysis Group healthcare deliverables.

Data WranglingGroup ByAggregationsAnalysis Group
Join Large Datasets With Mismatched KeysHard

Tests join strategy, data quality handling, and correctness/performance tradeoffs for large datasets.

SubqueriesJoinsData WranglingAnalysis Group
Joining Datasets With Key MismatchesHard

Tests your approach to designing correct joins and handling data quality issues at scale.

SubqueriesJoinsData WranglingAnalysis Group
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
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
Unify CRM and Google Analytics ViewHard
Practice
Practice drill

Merge CRM orders with GA events via an identity map to build a customer-level view using joins, window functions, and monthly rollups.

SubqueriesJoinsData WranglingArtefact
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3
More topics1 question · ~8 min
Statistical Programming ComfortMedium

Assesses your baseline ability to write and use statistical code for data analysis work.

Analysis Group
The finish line: interview-readyComplete all 13 questions plus 3 hands-on drills to finish this plan.