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Updated weekly · Last refresh Aug 30

Tencent Data Engineer Interview Questions

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

31questions
~4htotal time
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1
PipelinesStart here. 7 questions · ~56 min
Incremental ETL With Late DataHard

Tests pipeline design for correctness, idempotency, and late data handling in incremental ETL.

ETLIncremental loaddata integrityTencent
Real-Time DeduplicationHard

Tests strategies for deduping events under throughput and ordering constraints.

Data QualitydeduplicationStream ProcessingTencent
Kafka Queue Setup in CloudHard

Tests Kafka architecture knowledge for reliability, scaling, and operational readiness.

kafkafault toleranceCloudTencent
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2
SQL & Data Manipulation3 questions + 3 drills · ~54 min
Partitioning vs BucketingMedium

Tests understanding of storage layout choices and when to apply them for performance.

data warehousepartitioningData ModelingTencent
Explain Data PartitioningEasy

Tests foundational knowledge of partitioning concepts in data warehouses.

sql basicspartitioningData ModelingTencent
Optimize Slow SQL on PartitionsHard

Tests query optimization skills for large partitioned datasets and performance troubleshooting.

Performance TuningsqlpartitioningTencent
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
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
Validate Migration Reconciliation MetricsMedium
Practice
Practice drill

Use CTEs, joins, aggregations, and CASE to reconcile legacy and warehouse totals for a migration batch.

data validationdata integritycloud platformsAccenture
3
Behavioral & Leadership20 questions · ~160 min
Building a Dashboard Users AdoptedMedium

Tests stakeholder management, requirements gathering, and ownership in delivering a dashboard that meets user needs and drives adoption.

Stakeholder ManagementCommunicationdashboardingTencent
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4
More topics1 question · ~8 min
Spark Memory and OOM PreventionHard

Tests Spark execution understanding and practical tuning to avoid OOM during joins.

cachingsparkperformance analysisTencent

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