Top 29
Prep plan
Updated weekly · Last refresh Aug 30

Personalis Software Engineer Interview Questions

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

29questions
~4htotal time
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1
CodingStart here. 7 questions · ~56 min
Fast Multi-Dimensional Data StructureHard

Tests advanced data structure design for efficient multi-dimensional operations.

Hash TablesData Structuresperformance analysisPersonalis
Find Recurring Patterns in Genomic StringsMedium

Tests your ability to write Python solutions for pattern detection on sequence data.

frequency countStringspythonPersonalis
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2
Execution5 questions · ~40 min
AWS Backend for Lab WorkflowsHard

Tests your ability to build and operate reliable cloud services supporting lab workflow execution.

monitoringdesign systemcloud platformsPersonalis
Troubleshoot Distributed DB BottlenecksHard

Tests your systematic debugging skills for latency, throughput, and resource contention.

database optimizationTroubleshootingbottlenecksPersonalis
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3
SQL & Data Manipulation4 questions + 3 drills · ~62 min
4
Behavioral & Leadership11 questions · ~88 min
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5
More topics2 questions · ~16 min
AWS Secrets and Deployment PipelinesMedium

Tests your cloud engineering practices for secure configuration and reliable deployments.

InfrastructuredeploymentawsPersonalis
Scalable Genomic Pipeline in LIMSHard

Tests your end-to-end pipeline design for data ingestion, validation, and traceability in LIMS.

Data QualityETLOrchestrationPersonalis
The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.