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Prep plan
Updated weekly · Last refresh Oct 17

Dialpad Software Engineer Interview Questions

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

50questions
~10htotal time
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1
CodingStart here. 35 questions · ~410 min
Binary Tree BasicsEasy
Practice

Compute a Datadog event tree's maximum depth using recursive depth-first search.

Dialpad
Longest Substring Without RepeatsMedium
Practice

Find the length of the longest substring without repeated characters using a sliding window and hash map.

Hash TablesdeduplicationArraysDialpad
Two Sum PracticeEasy
Practice

Use a hash map to find two cart item indices whose prices add to a target budget in O(n) time.

Hash TablesArraysTwo PointersDialpad
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2
System Design3 questions · ~35 min
Design a Rudimentary APIMedium

Evaluates your REST fundamentals, resource modeling, and endpoint design skills.

api designDialpad
Design a CalculatorMedium

Tests system design and requirements-to-implementation thinking for a simple product.

designDialpad
Check 10-Digit Number AvailabilityMedium

Evaluates your system design thinking for fast lookups, storage, and consistency.

designDialpad

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3
Behavioral & Leadership10 questions · ~117 min
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4
More topics2 questions · ~23 min
Trade-offs Among Backend LanguagesEasy

Tests ability to reason about language fit, performance, ecosystem, and maintainability.

Stakeholder ManagementCommunicationDialpad
Handling Positive and Negative FeedbackEasy

Tests your receptiveness, professionalism, and ability to iterate based on stakeholder input.

Trade-offsSuccess CriteriaRisk AssessmentDialpad
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