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Eloelo Interview Questions

The questions to prepare for Eloelo interviews, across all roles. Questions from real interview reports rank first. Updated daily.

32questions
~6htotal time
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1
SQL & Data ManipulationStart here. 7 questions + 1 drill · ~87 min
Calculate 30-Day User RetentionHard
Practice

Use CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.

Window FunctionsDate FunctionsAggregationsEloelo
Daily User Retention QueryMedium
Practice

Calculate cohort-based daily user retention using PostgreSQL CTEs, joins, distinct counts, and date arithmetic.

Date FunctionsData AnalysisCTEsEloelo
Freight Volume YoY GrowthMedium
Practice
Practice drill

Calculate 2024 freight volume growth by Uber Freight region compared with 2023.

Date FunctionsJoinsData AnalysisUber Freight
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2
Coding9 questions · ~98 min
Longest Subarray Sum Equals KMedium
Practice

Find the longest contiguous subarray whose sum equals K using prefix sums and a hash map.

ArraysEloelo
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3
Execution5 questions · ~55 min
SSR vs CSR User ExperienceMedium

Tests understanding of SSR and CSR tradeoffs and their impact on UX.

web technologiesEloelo
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4
Product Sense3 questions · ~33 min
Why Eloelo Wins UsersMedium

Tests product sense and ability to articulate user value drivers for Eloelo.

Competitive AnalysisEloelo
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5
Behavioral & Leadership5 questions · ~55 min
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6
More topics3 questions · ~33 min
Web App Security VulnerabilitiesMedium

Tests security fundamentals and ability to apply mitigations across the web stack.

security vulnerabilitiesRisk ManagementEloelo
Live Streaming for ThousandsHard

Tests system design skills for scalable real-time streaming delivery.

scalabilityarchitectureEloelo
Funnel Analysis ApproachMedium

Evaluates your ability to design and interpret funnel metrics to drive product decisions.

product metricsFunnel AnalysisEloelo
The finish line: interview-readyComplete all 32 questions plus 1 hands-on drill to finish this plan.