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Updated weekly · Last refresh Aug 30

Taboola Data Engineer Interview Questions

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

22questions
~3htotal time
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1
PipelinesStart here. 16 questions · ~140 min
Batch vs Stream Processing Trade-offsMedium

Compare batch and stream processing across latency, complexity, cost, and data quality in a modern analytics pipeline.

InfrastructureStream ProcessingETLTaboola
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityTaboola
Real-Time Dashboard Pipeline DesignHard

Approach for building near-real-time dashboard pipelines with streaming, orchestration, and data quality controls.

Stream ProcessingSchedulingDependenciesTaboola
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2
SQL & Data Manipulation3 questions + 3 drills · ~56 min
SQL vs NoSQL DifferencesEasy

Tests foundational database knowledge and when to choose each type.

JoinsData WranglingTaboola
Optimizing Slow SQL QueriesEasy

Tests SQL performance tuning skills and practical tradeoffs for large datasets.

Joinsquery optimizationAggregationsTaboola
Strategies to Optimize Slow QueriesMedium

Tests performance diagnosis and optimization techniques for production analytics workloads.

Window FunctionsJoinsquery optimizationTaboola
SQL for Good UsersMedium
Practice
Practice drill

Use CTEs and aggregation to find Taboola Ads Manager users averaging at least three weekly sessions and calculate session duration.

sql queryData AnalysisTaboola
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
More topics3 questions · ~26 min
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersTaboola
Run Length EncodingMedium

Assesses your coding fundamentals and attention to correctness for a string compression algorithm.

Taboola
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The finish line: interview-readyComplete all 22 questions plus 3 hands-on drills to finish this plan.