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Updated weekly · Last refresh Aug 30

Fivetran Software Engineer Interview Questions

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

50questions
~9htotal time
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1
SQL & Data ManipulationStart here. 9 questions · ~98 min
Customer Transaction Running TotalsEasy
Practice

Calculate each customer's cumulative transaction amount over time using a CTE and window function.

Window FunctionsDate FunctionsRunning TotalsFivetran
Latest Row Per GroupEasy
Practice

Use ROW_NUMBER and windowed COUNT to return the latest row from duplicate Fivetran sync record groups.

Window FunctionsRankingGroup ByFivetran
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2
Coding12 questions · ~131 min
Graph Traversal with BFS and DFSEasy
Practice

Traverse a graph from a start node using BFS and DFS, returning the visit order for each traversal.

StackQueueGraphsFivetran
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsFivetran
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3
System Design11 questions · ~120 min
Design Cold Start RecommendationsHard

Design a recommendation system strategy for new users and new items when interaction history is sparse or missing.

Cold StartFeature StoreRecommendation SystemsFivetran
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4
Pipelines7 questions · ~76 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityFivetran
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5
Execution6 questions · ~66 min
Plan a Cloud Architecture MigrationMedium

Plan a cloud architecture migration while balancing delivery risk, stakeholder expectations, and uptime constraints.

InfrastructureTrade-offsRisk AssessmentFivetran
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6
Behavioral & Leadership3 questions · ~33 min
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7
More topics2 questions · ~22 min
Why Java Strings Are ImmutableMedium

Tests your understanding of Java language design and performance implications.

javaStringsFivetran
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The finish line: interview-readyComplete all 50 questions to finish this plan.