Dataford
Dataford
Top 18
Prep plan
Updated weekly · Last refresh Oct 17

Stem Software Engineer Interview Questions

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

18questions
~2htotal time
Track your progressSign up free to work through all 18 questions and resume where you left off.
Start practicing free →
1
PipelinesStart here. 3 questions · ~24 min
Zero-Downtime Database MigrationsHard

Tests your ability to execute safe schema changes with minimal risk to availability.

availabilityschema evolutionCloudStem
Real-Time Battery Data IngestionHard

Tests your ability to design ingestion and processing pipelines for high-frequency energy telemetry.

data integrationStream ProcessingmonitoringStem
More Pipelines questions with a free account
2
Behavioral & Leadership8 questions · ~65 min
More Behavioral & Leadership questions with a free account
3
More topics7 questions · ~57 min
API Response Time OptimizationMedium

Tests your ability to diagnose and improve API latency through engineering and system design choices.

performanceStem
Building Clean .NET APIsHard

Evaluates your ability to design and implement maintainable backend APIs with modern .NET practices.

best practicesStem
Optimizing Time-Series Query PerformanceHard

Tests your performance tuning skills for time-series workloads and large-scale queries.

Performance Tuningquery optimizationTime SeriesStem
Clean Architecture for Backend ServicesMedium

Tests your software design judgment and ability to structure maintainable backend services.

best practicestechnical experiencearchitectureStem
Caching Strategy for EndpointsMedium

Assesses your approach to selecting caching layers and designing cache correctness and performance.

api designcachingStem
Scalable Telemetry API DesignHard

Tests ability to design scalable APIs for high-throughput real-time telemetry use cases.

rest apisscalabilitytelemetryStem
More questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Refactoring a Slow QueryMedium
Practice
Practice drill

Refactor a slow Candid Health claims query using pre-aggregation, latest-event logic, and monthly payer metrics.

Performance Tuningdatabase optimizationCTEsCandid Health
Troubleshooting Data Integration IssuesMedium
Practice
Practice drill

Reconcile records from two systems and classify missing records, amount differences, and status discrepancies.

data integrationnull handlingJoinsAutodesk
Automate with Your Programming LanguageMedium
Practice
Practice drill

Count Citi workflow task types with more than one exception and show the latest review date.

Data ManipulationAutomationtechnical experienceCiti
The finish line: interview-readyComplete all 18 questions plus 3 hands-on drills to finish this plan.