Harnham Data Scientist Interview Questions
The questions to prepare for a Harnham Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Design an A/B test for a new app-store ranking algorithm, including primary metrics, guardrails, sample size, and launch criteria.
HarnhamExplain how to evaluate an AI model using the right metrics and how metric choice depends on the business goal.
HarnhamTests practical knowledge of RAG system components, evaluation, and operational considerations.
HarnhamUse PostgreSQL window functions to compare Harnham Recruiter Cloud's seven-day application average with the prior week.
HarnhamDiscuss the main pipeline challenges that appear as data volume, velocity, and system complexity grow.
HarnhamDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
HarnhamTests your understanding of hypothesis testing and statistical validation for model changes.
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Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.
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Inc.
Benjamin MooreUse ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
Replit
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