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Updated weekly · Last refresh Aug 30

Cedar Software Engineer Interview Questions

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

32questions
~5htotal time
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1
CodingStart here. 8 questions · ~69 min
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersCedar
Dynamic Programming ApproachMedium

Tests your problem-solving strategy for DP, including state definition and transitions.

RecursionMathDynamic ProgrammingCedar
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2
System Design4 questions · ~34 min
Design a URL Shortening ServiceHard

Design a URL shortening service that routes, ranks, and monitors links at scale.

Feature StoreModel ServingCedar
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3
Execution6 questions · ~52 min
Reliability and Fault ToleranceMedium

Tests your approach to building resilient services and handling failures gracefully.

Rollback PlanTrade-offsRisk AssessmentCedar
Reducing API Response TimeMedium

Tests your ability to diagnose and improve API latency using engineering best practices.

Trade-offsSuccess CriteriaRisk AssessmentCedar
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4
Behavioral & Leadership10 questions · ~86 min
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5
More topics4 questions · ~34 min
SQL vs NoSQL for Go-to-Market DataEasy

Explain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.

JoinsData WranglingCedar
Real-Time Notifications ArchitectureHard

Tests your system design skills for low-latency, reliable real-time messaging.

InfrastructureStream ProcessingOrchestrationCedar
Defining Pipeline Success CriteriaMedium

Tests your ability to define measurable outcomes and implement data processing logic in pipelines.

data processingSuccess CriteriaCedar
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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
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
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 32 questions plus 3 hands-on drills to finish this plan.