Top 50
Prep plan
Updated weekly · Last refresh Aug 30

HubSpot Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 16 questions · ~156 min
Merge Two Sorted ArraysEasy
Practice

Merge two sorted arrays into one sorted array using a two-pointer linear scan.

ArraysSortingTwo PointersHubSpot
Shortest Substring Sliding WindowHard
Practice

Find the shortest substring containing all required characters, including duplicates, using a frequency map and sliding window.

Sliding WindowHubSpot
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2
Pipelines6 questions · ~59 min
Global Weather Monitoring PipelineHard

Tests your ability to design end-to-end streaming and low-latency query systems under high ingest rates.

InfrastructureStream ProcessingQualityHubSpot
Cross-Device Playback ResumeMedium

Tests your ability to design consistent state tracking across devices with low latency and fault tolerance.

APIsIdempotencyData ModelingHubSpot
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3
System Design15 questions · ~147 min
Video Streaming System DesignHard

Tests your system design skills for large-scale media delivery, including storage, indexing, and content delivery.

Feature StoreModel ServingRecommendation SystemsHubSpot
Scalable Streaming PlatformHard

Assesses end-to-end execution, scalability thinking, and coding performance under interview constraints.

HubSpot
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4
Execution6 questions · ~59 min
Long Write-Up With CORSHard

Evaluates your ability to deliver a correct solution and explain web security considerations.

Problem SolvingHubSpot
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5
SQL & Data Manipulation3 questions + 3 drills · ~59 min
6
Behavioral & Leadership4 questions · ~39 min
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.