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Prosper Marketplace Interview Questions

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

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1
SQL & Data ManipulationStart here. 5 questions · ~52 min
2
Coding5 questions · ~52 min
Stack-Based Queue ImplementationMedium
Practice

Implement FIFO queue operations using two stacks with amortized O(1) enqueue and dequeue.

coding challengeStackQueueProsper Marketplace
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3
Metrics5 questions · ~52 min
Analyze a Successful CampaignEasy

Describe how you would evaluate a successful marketing campaign using funnel KPIs, conversion, and ROI.

KPIsDiagnosisEngagement MetricsProsper Marketplace
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4
Execution5 questions · ~52 min
Prioritize Conflicting Engineering DeadlinesMedium

Explain how you would prioritize competing engineering deadlines when stakeholders, business impact, and delivery risk are all in tension.

Trade-offsRoadmappingRisk AssessmentProsper Marketplace
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5
Pipelines3 questions · ~31 min
Consistency Across Service PipelinesMedium

Approach for keeping pipeline outputs consistent when multiple microservices publish overlapping, delayed, or duplicate data.

system designdata consistencymicroservicesProsper Marketplace
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6
Statistics & Probability5 questions · ~52 min
Biased Coin IdentificationHard

Determine how many consecutive heads are needed to reach 99% posterior confidence that a selected coin has two heads.

Bayesian ReasoningBiasprobabilityProsper Marketplace
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7
More topics22 questions · ~228 min
A/B Test for Email CampaignMedium

Design and analyze an A/B test for a new email campaign, including metrics, power, guardrails, and common experiment risks.

email campaignAnalysisA/B TestingProsper Marketplace
New Product Market and Default RateHard

Estimate the addressable market and expected default rate for a new Prosper loan product aimed at a specific credit tier.

EstimationBusiness Modelanalytical thinkingProsper Marketplace
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