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Updated weekly · Last refresh Sep 22

ServiceTitan Data Engineer Interview Questions

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

25questions
~4htotal time
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1
SQL & Data ManipulationStart here. 10 questions + 1 drill · ~106 min
Window Functions vs GROUP BYEasy

Explain how window functions differ from GROUP BY and when to use each in Splice product analysis.

Window FunctionsGroup ByAggregationsServiceTitan
Nested SQL Query WritingMedium

Assesses SQL proficiency for nested query patterns and translating requirements into queries.

sqlServiceTitan
SQL Churn After First MonthMedium
Practice
Practice drill

Use monthly cohort logic to find users with no transaction in the calendar month after their first transaction month.

data relationshipsDate FunctionsCTEsServiceTitan
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2
Pipelines6 questions · ~58 min
Batch vs Stream Processing Trade-offsMedium

Compare batch and stream processing across latency, complexity, cost, and data quality in a modern analytics pipeline.

InfrastructureStream ProcessingETLServiceTitan
Data Quality and Schema EvolutionMedium

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

schema evolutionData ModelingQualityServiceTitan
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityServiceTitan
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3
Behavioral & Leadership6 questions · ~58 min
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4
More topics3 questions · ~29 min
Flatten JSON Into StructureMedium
Practice

Flatten nested JSON objects and arrays into dot-and-index paths using an iterative traversal.

Codingjson parsingData StructuresServiceTitan
Large File Processing in PythonMedium

Tests scalable data processing techniques and memory-aware implementation choices.

memory managementpythonServiceTitan
Unit Testing for Data TransformationsMedium

Tests testing strategy for deterministic transformations and data validation in pipelines.

pythonServiceTitan
The finish line: interview-readyComplete all 25 questions plus 1 hands-on drill to finish this plan.