Dataford
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Prep plan
Updated weekly · Last refresh Aug 30

Aviso Data Scientist Interview Questions

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

29questions
~4htotal time
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1
Machine LearningStart here. 6 questions · ~52 min
Prevent Overfitting in ML ModelsEasy

Explain how to reduce overfitting using regularization, validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationAviso
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2
System Design4 questions · ~35 min
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingAviso
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3
A/B Testing & Experimentation3 questions · ~26 min
Discovery UI Metrics and GuardrailsMedium

Define primary and guardrail metrics for a discovery UI test, with power, MDE, and a pre-registered analysis plan.

ExperimentationGuardrail MetricsA/B TestingAviso
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4
Behavioral & Leadership7 questions · ~61 min
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5
More topics9 questions · ~78 min
Analyze Customer Purchase Trends with Window FunctionsEasy
Practice

Calculate the monthly spending trends for customers using window functions and joins.

Aviso
Improve Predictive Model AccuracyMedium

Assess why a predictive model is missing accuracy targets and identify changes that would improve it.

Cross-ValidationAccuracyThreshold TuningAviso
Evaluating Observed Lift SignificanceMedium

Explain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.

Confidence IntervalsStatistical SignificanceP-ValuesAviso
Diagnose KPI Drop After ReleaseMedium

Diagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.

KPILeading IndicatorsDiagnosisAviso
Batch Pipeline for Event DataMedium

Tests your ability to design reliable batch ingestion, validation, and backfill for analytics-ready data.

ETLBatch ProcessingBackfillingAviso
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
Longest Consecutive Login Streak per UserHard
Practice
Practice drill

Calculate the longest consecutive login streak for each user using window functions and date manipulations.

Window FunctionsJoinsAggregationsChimeECSSalesforce
SQL for Weekly Regional PerformanceMedium
Practice
Practice drill

Calculate weekly volume, handling time, and week-over-week change by Kuiper Commercial Services region.

Window FunctionsJoinsAggregationsAmazon Kuiper Commercial Services
The finish line: interview-readyComplete all 29 questions plus 2 hands-on drills to finish this plan.