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Updated weekly · Last refresh Aug 30

Compass Software Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 17 questions · ~143 min
Sliding Window or Two PointersMedium
Practice

Find the longest contiguous Compass search session containing at most k distinct neighborhoods using a sliding window.

ArraysSliding WindowTwo PointersCompass
Debug an Email ScriptMedium

Tests your debugging skills and ability to implement a safe fix from a faulty snippet.

Compass
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2
System Design12 questions · ~101 min
Design a Screen for Compass AppMedium

Assesses product-minded system design for UI and backend interactions for a real app feature.

user interfaceCompass
System Design Interview PatternMedium

Assesses ability to structure solutions across system design and coding interview formats.

system designleetcodeCompass
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3
Security & Infrastructure14 questions · ~118 min
URI vs Query ParametersMedium

Assesses URL structure knowledge and API request parameter handling.

Compass
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4
Behavioral & Leadership4 questions · ~34 min
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5
More topics3 questions · ~25 min
Explain the CAP TheoremMedium

Tests distributed systems fundamentals relevant to data infrastructure.

InfrastructureToolsData ModelingCompass
Create Color-Coded Table From ObjectsMedium

Evaluates your ability to translate data models into a correct, presentation-ready tabular structure.

data visualizationCompass
AI Round on Forms MatchingMedium

Assesses ability to reason about AI/ML-style matching problems and practical implementation thinking.

AICompass

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Customers by Sales RevenueEasy
Practice
Practice drill

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsHousecall ProEquifaxXYZ
SQL Average Selling PriceMedium
Practice
Practice drill

Calculate weighted average selling prices by product using a date-range join, aggregation, and NULL handling.

leetcodesqlCostarCostar Group
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.