Top 25
Prep plan
Updated weekly · Last refresh Aug 30

Adyen Data Engineer Interview Questions

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

25questions
~3htotal time
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1
PipelinesStart here. 12 questions · ~97 min
ETL vs ELT Trade-offsEasy

Compare ETL and ELT, and explain when ELT is the better pipeline pattern.

ETLELTData ModelingAdyen
Handling Missing Data in PipelinesMedium

Approach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.

InfrastructureETLBatch ProcessingAdyen
Batch vs Streaming Data ProcessingEasy

Compare batch and streaming data processing, including when each fits best in a pipeline.

Stream ProcessingETLBatch ProcessingAdyen
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2
SQL & Data Manipulation3 questions + 3 drills · ~54 min
Optimize Slow SQLHard

Tests query tuning skills including indexing, execution plans, and query rewrites.

SubqueriesJoinsData WranglingAdyen
Deduplication and Data Manipulation CodingMedium

Tests your hands-on ability to implement data transformations and manipulations correctly.

JoinsData WranglingAggregationsAdyen
Improving Spark Join PerformanceMedium

Tests your ability to diagnose and optimize Spark SQL join strategies for performance.

sqlpythonAdyen
Rank Drivers of Failed PaymentsMedium
Practice
Practice drill

Find the top failure driver in each payment dimension using joins, aggregations, and ranking.

JoinsCase WhenAggregationsAdyenIntuit
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
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
3
Behavioral & Leadership9 questions · ~73 min
Prioritizing Across Competing Client ProjectsEasy

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

OwnershipPrioritizationAdyen
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4
More topics1 question · ~8 min
The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.