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Top 17
Prep plan
Updated weekly · Last refresh Aug 30

One call Software Engineer Interview Questions

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

17questions
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1
SQL & Data ManipulationStart here. 5 questions + 3 drills · ~70 min
Stored Procedures vs TriggersMedium
Recently asked

Explain how stored procedures and triggers differ in control, execution, and data-integrity use cases.

JoinsData WranglingAggregationsOne call
SQL vs NoSQL Trade-OffsMedium
Recently asked

Evaluates database selection reasoning for scalability, consistency, and query needs.

nosqlsqldatabase designOne call
Query Optimization in ProductionMedium
Recently asked

Tests performance tuning skills, diagnostics, and safe changes in production data systems.

performancequery optimizationsqlOne call
Weekly Service KPI by TeamMedium
Practice
Practice drill

Analyze weekly service delivery performance by team using joins, a CTE, date aggregation, and KPI calculations.

KPIJoinssqlDeloitteReputation
SQL Ranking by SalaryEasy
Practice
Practice drill

Join employee and salary data, then rank employees within each Intuit product company using a PostgreSQL window function.

JoinssqlAggregationsIntuit
Average Vehicle Idle Time by ZoneHard
Practice
Practice drill

Use joins, a CTE, and aggregations to calculate average vehicle idle minutes in a specific geographic zone.

JoinsData ManipulationsqlWaymo
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2
System Design3 questions · ~24 min
High-Frequency Update Service DesignHard
Recently asked

Assesses system design for handling high-throughput, low-latency data ingestion and processing.

data processingscalabilityOne call
Zero-Downtime Deployment ArchitectureHard
Recently asked

Evaluates system design choices for deploying changes without service interruption.

system architecturezero downtimedeploymentOne call
End-to-End Feature OwnershipMedium
Recently asked

Evaluates ownership, execution, and delivery across the software development lifecycle.

project ownershipdeploymentOne call

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3
Behavioral & Leadership7 questions · ~56 min
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4
More topics2 questions · ~16 min
Refactoring a Legacy SystemMedium
Recently asked

Assesses strategy for reducing risk while improving legacy codebases and architecture.

refactoringlegacy systemsOne call
Testability in CI/CD PipelinesMedium
Recently asked

Assesses how you build quality gates and maintainability into CI/CD workflows.

code qualityCI/CDTestingOne call
The finish line: interview-readyComplete all 17 questions plus 3 hands-on drills to finish this plan.