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Prep plan
Updated weekly · Last refresh Oct 17

Thumbtack Software Engineer Interview Questions

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

50questions
~10htotal time
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1
CodingStart here. 31 questions · ~376 min
Prefix Notation Expression EvaluationEasy
Practice

Evaluate a postfix expression of variables and operators using a stack, as used in Thumbtack quote calculations.

Thumbtack
Rating Threshold Manual ReviewEasy
Practice

Scan rating arrays and return the indices of Pros whose ratings are strictly below the manual-review threshold.

ArraysArray ManipulationAlgorithmsThumbtack
Service Dependency Legality CheckHard
Practice

Validate a proposed Thumbtack service order using dependency checks and topological ordering rules.

Data Structurescycle detectionAlgorithmsThumbtack
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2
System Design8 questions · ~97 min
Design X for a Top WebsiteHard

Evaluates system design breadth, tradeoffs, and ability to scope a large web service.

designThumbtack
Todo List With RemindersMedium

Evaluates your system design approach for scheduling, notifications, and data modeling.

Thumbtack
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3
Behavioral & Leadership8 questions · ~97 min
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4
More topics3 questions · ~36 min
Token Frequency CountingEasy

Assesses your ability to implement efficient frequency counting with common data structures.

Data AnalysisThumbtack
High-Scale Notification DeliveryHard

Tests your ability to design reliable, rate-limited notification pipelines at very high scale.

Stream ProcessingmonitoringOrchestrationThumbtack
Analyze a Small SQL TriggerMedium

Assesses your SQL fluency and ability to reason about side effects in database triggers.

code analysissqlThumbtack
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.