Top 22
Prep plan
Updated weekly · Last refresh Oct 17

Flexport Data Scientist Interview Questions

The questions to prepare for a Flexport Data Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 5 questions + 1 drill · ~55 min
Top Delayed Routes by RegionMedium
Practice

Use a CTE and window ranking to find the top 3 routes with the highest average delay in each region.

Window FunctionsJoinsRankingFlexport
Optimizing Large Transaction Table JoinsHard

Explain how to tune a slow PostgreSQL query that joins several large transaction tables using indexes, join strategy, and partitioning.

JoinsperformancesqlFlexport
SQL Onboarding Progress TrackingHard
Practice
Practice drill

Aggregate client shipment progress, delay rates, and changes between consecutive 30-day periods.

Window FunctionsDate FunctionsJoinsFlexport
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2
Product Sense4 questions · ~36 min
Measure New Dashboard Feature SuccessMedium

Define a framework to measure whether a new observability dashboard feature is delivering real value and sustained adoption.

Feature PrioritizationUser NeedsProduct VisionFlexport
Prioritizing Speed vs Cost TransparencyMedium

Assesses product sense tradeoffs and metric-driven prioritization for logistics outcomes.

Feature PrioritizationUser Needscost analysisFlexport
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3
A/B Testing & Experimentation6 questions · ~55 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 MismatchFlexport
Simpson’s Paradox DiagnosisHard

Tests advanced causal reasoning and debugging of confounding via segmentation and stratification.

Data AnalysisA/B TestingFlexport
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4
Behavioral & Leadership5 questions · ~45 min
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5
More topics2 questions · ~18 min
SQL and Scheduling ProblemHard

Evaluates problem-solving process and debugging skills on a scheduling-style coding task.

Problem SolvingFlexport
Investigating a 10% Metric DropMedium

Tests structured incident investigation using data, segmentation, and validation checks.

root cause analysisFlexport
The finish line: interview-readyComplete all 22 questions plus 1 hands-on drill to finish this plan.