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Prep plan
Updated weekly · Last refresh Aug 30

Upstart Network Research Scientist Interview Questions

The questions to prepare for a Upstart Network Research Scientist interview. Questions from real interview reports rank first. Updated weekly.

35questions
~5htotal time
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1
CodingStart here. 4 questions · ~34 min
Count Valid Triangle CombinationsMedium
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Count side combinations that form valid triangles using sorting and a two-pointer scan in O(n²) time.

AlgorithmsUpstart Network
Array or DP Under ConstraintsHard

Tests algorithmic problem solving and optimization under performance constraints.

Dynamic ProgrammingArraysAlgorithmsUpstart Network
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2
Statistics & Probability12 questions · ~103 min
Central Limit Theorem LimitsMedium

Explain the Central Limit Theorem, its assumptions, and when normal approximations break down in practice.

DistributionsCentral Limit TheoremExpected ValueUpstart Network
Variance of Dependent SumHard

Tests ability to derive variance relationships for dependent random variables.

VarianceConditional ProbabilityUpstart Network
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3
Machine Learning6 questions · ~52 min
Gradient Boosting Missing ValuesMedium

Tests knowledge of tree-based model internals for missing data handling.

Ensemble Methodsmodel trainingDecision TreesUpstart Network
L1 vs L2 RegularizationMedium

Tests understanding of regularization geometry and its impact on model sparsity and selection.

Feature EngineeringRegularizationmodel trainingUpstart Network
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4
Model Evaluation3 questions · ~26 min
Detect Data Leakage in Time SeriesHard

Tests ability to prevent leakage in temporal modeling and ensure valid evaluation.

Evaluation TechniquesBiasTime SeriesUpstart Network
Metrics for Imbalanced Credit DefaultsMedium

Tests metric selection and trade-off reasoning for imbalanced credit risk evaluation.

PrecisionAUC-ROCRecallUpstart Network
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5
Behavioral & Leadership10 questions · ~86 min
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