Allianz Data Engineer Interview Questions

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

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SQL & Data ManipulationStart here. 4 questions + 2 drills · ~54 min

Clustered vs Non-Clustered Indexes in WMSMedium

Explain clustered vs non-clustered indexes and how they affect WMS query performance and row storage.

JoinsData WranglingAggregations

Allianz

Optimizing Large Transaction Table JoinsHard

Explain how to tune a slow PostgreSQL query that joins several large transaction tables using indexes, join strategy, and partitioning.

Joinsperformancesql

Allianz

Second Highest Premium in SQLMedium

Practice

Find UK Property policies with the second-highest distinct premium using aggregation, DENSE_RANK, and a LEFT JOIN.

SubqueriesRankingAggregations

Allianz

Optimize a Slow SQL QueryHard

Practice

Recently asked

Practice drill

Rewrite a slow PostgreSQL loan payment query to reduce scanned rows while preserving the required aggregated results.

database optimizationJoinsData Wrangling

AmeripriseEEltro Cyberchrome Private

EnergyHub

SQL Claims Delay AnalysisMedium

Practice

Practice drill

Join claims and operations data to calculate monthly average processing delay and delayed-claim rates by region.

Date FunctionsJoinsAggregations

Allianz

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Pipelines3 questions · ~26 min

Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQuality

Allianz

Batch and Real-Time Policy UpdatesHard

Tests pipeline architecture choices for combining batch and streaming processing with reliability and correctness.

system designStream ProcessingBatch Processing

Allianz

Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQuality

Allianz

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Behavioral & Leadership13 questions · ~111 min

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