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OfferUp Interview Questions

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

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1
CodingStart here. 5 questions · ~49 min
Merge Two Sorted Linked ListsEasy
Practice

Merge two sorted singly linked lists into one sorted list by relinking existing nodes.

RecursionLinked ListsSortingOfferUp
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2
Metrics4 questions · ~39 min
Design Success Metrics FrameworkMedium

Define a practical framework for judging design success using leading, lagging, and funnel-based product metrics.

KPIsConversion RateEngagement MetricsOfferUp
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3
Sales & Customer5 questions · ~49 min
Handle Client ObjectionsMedium

Handle client objections by diagnosing the real concern, re-anchoring on value, and advancing the deal.

Stakeholder ManagementCommunicationOfferUp
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4
Machine Learning4 questions · ~39 min
Bias-Variance Tradeoff in PracticeMedium

Explain the bias-variance tradeoff and how it guides model choice, regularization, and generalization performance.

Cross-ValidationBias-Variance TradeoffRegularizationOfferUp
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5
Execution5 questions · ~49 min
Handling Ambiguity in Product ExecutionMedium

Describe how you handled ambiguity in a product initiative by creating clarity, aligning stakeholders, and driving execution forward.

Trade-offsRoadmappingRisk AssessmentOfferUp
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6
SQL & Data Manipulation4 questions + 3 drills · ~69 min
Optimizing Slow Queries at ScaleHard

Explain how to diagnose and optimize a slow PostgreSQL query on large customer datasets.

SubqueriesJoinsData WranglingOfferUp
SQL Window Functions ExperienceMedium
Practice
Practice drill

Use SQL window functions to rank regions by average 2024 yield within each country.

Window FunctionsJoinsData ManipulationErnst & YoungKBRMaximus Tech
Window Functions for TrendsMedium
Practice
Practice drill

Calculate account-level running totals and three-row moving averages with PostgreSQL window functions.

Window FunctionsJoinsData ManipulationAAxtriaGGrowth IntelligenceOOxford Nanopore Technologies
Using Moving Window FunctionsMedium
Practice
Practice drill

Calculate three-row moving averages with SQL window frames after aggregating order data by seller and date.

Window FunctionsLag/LeadJoinsCColes GroupttjxShopee
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7
More topics23 questions · ~223 min
Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchOfferUp
Handling Architectural Stakeholder ConflictMedium

Tests conflict resolution and influence when a stakeholder challenges an architectural decision with meaningful business or technical stakes.

Conflict ResolutionStakeholder ManagementCommunicationOfferUp
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