Top 34
Prep plan
Updated weekly · Last refresh Aug 30

phData Solutions Architect Interview Questions

The questions to prepare for a phData Solutions Architect interview. Questions from real interview reports rank first. Updated weekly.

34questions
~5htotal time
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1
SQL & Data ManipulationStart here. 4 questions + 2 drills · ~53 min
2
Pipelines6 questions · ~50 min
Capacity Planning for Data PipelinesMedium

How to think about capacity planning for a pipeline, including throughput, storage growth, latency, and operational headroom.

system designhardware architecturecapacity planningphData
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityphData
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3
System Design7 questions · ~58 min
Design a Personalized Recommendation RankerHard

Design a personalized recommendation system that turns user preferences into ranked suggestions with retrieval, ranking, and feedback loops.

RetrievalTwo-Tower ModelsRecommendation SystemsphData
Real-Time Multi-Source AnalyticsHard

Tests system design skills for streaming ingestion, processing, and analytics readiness under constraints.

InfrastructureStream ProcessingBatch ProcessingphData
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4
Coding4 questions · ~33 min
Apache Spark Data TransformationMedium

Tests your ability to implement common ETL-style transformations in Spark for phData delivery work.

Hash TablesArraysStringsphData
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5
Behavioral & Leadership11 questions · ~92 min
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6
More topics2 questions · ~17 min
Balancing Performance and CostHard

Tests your ability to make architecture decisions that meet SLAs while controlling spend for phData clients.

EstimationCompetitive AnalysisPricing StrategyphData
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The finish line: interview-readyComplete all 34 questions plus 2 hands-on drills to finish this plan.