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Updated weekly · Last refresh Oct 7

Taboola Backend Engineer Interview Questions

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

15questions
~2htotal time
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1
System DesignStart here. 3 questions · ~25 min
Design AI-Assisted OA SystemHard

Evaluates system design thinking for an AI-assisted application workflow.

AITaboola
Database Trade-Offs for WritesMedium

Assesses your ability to choose and justify data storage technologies for write-heavy systems.

Trade-offsTaboola
Low-Latency High-Frequency SystemHard

Evaluates your system design skills for low-latency, high-throughput backend workloads.

high-frequency requestslow latencysystem architectureTaboola
2
Coding3 questions · ~25 min
Hash Map ImplementationMedium

Assesses understanding of hashing, collisions, and core data structure design.

Data StructuresTaboola
Reusable Object-Oriented DesignMedium

Evaluates your ability to apply OOP for reusable abstractions and clean interfaces.

Taboola
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3
Behavioral & Leadership6 questions · ~50 min
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4
More topics3 questions · ~25 min
Parse Logs Into MetricsMedium

Evaluates ability to transform semi-structured logs into useful metrics for backend systems.

log parsingstatisticsTaboola
Debugging Production in Distributed SystemsMedium

Tests your production debugging workflow across distributed services and data flows.

distributed systemsDebuggingTaboola
Speed vs Code QualityMedium

Assesses how you manage trade-offs between delivery speed and engineering quality.

code qualityTaboola

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
7-Day Rolling Active UsersMedium
Practice
Practice drill

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsMetaSpotifyMeta IT
Handling Missing DataEasy
Practice
Practice drill

Replace missing sales fields with defined defaults and return a consistently ordered dataset.

missing valuesdata cleaningnull handlingUniversity of MinnesotaThe Home DepotNationwide
SQL vs NoSQL DifferencesEasy
Practice
Practice drill

Query a comparison table to present the key structural and operational differences between SQL and NoSQL databases.

nosqlJoinsData WranglingCogitoRamsey SolutionsIInnovaccer
The finish line: interview-readyComplete all 15 questions plus 3 hands-on drills to finish this plan.