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Persistent Systems Solutions Architect Interview Questions

The questions to prepare for a Persistent Systems Solutions Architect interview. Questions from real interview reports rank first. Updated daily.

50questions
~7htotal time
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1
CodingStart here. 24 questions · ~208 min
Efficient JSON TransformationsHard
Practice

Recursively filter Palo Alto Networks JSON by blocked paths using a trie to prune excluded subtrees efficiently.

efficiencyPersistent Systems
Sliding Window Rate LimiterMedium
Practice

Implement an exact sliding-window rate limiter using a queue to decide allow/deny per request.

Hash TablesQueueArraysPersistent Systems
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2
System Design14 questions · ~122 min
Vector Search for Massive DatasetsHard

Design a distributed vector search index that supports massive collections while maintaining low query latency and reliable freshness.

Vector Searchlow latencydistributed systemsPersistent Systems
Design an Enterprise RAG PipelineHard

Design an enterprise RAG system that balances retrieval quality, grounded answers, and low latency over frequently changing internal data.

latencyRAG pipelinesAccuracyPersistent Systems
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingPersistent Systems
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3
Pipelines5 questions · ~43 min
Pipeline Alerting and Monitoring DesignMedium

Set up pipeline monitoring and alerting that catches critical failures quickly while limiting noisy alerts.

InfrastructureToolsQualityPersistent Systems
Data Governance in PipelinesMedium

Describe a practical approach to data governance across shared data pipelines, including quality, ownership, lineage, and controlled data access.

InfrastructureQualityPersistent Systems
Data Quality and Schema EvolutionMedium
Recently asked

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

schema evolutionData ModelingQualityPersistent Systems
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4
Behavioral & Leadership7 questions · ~61 min
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