Extend Interview Questions
The questions to prepare for Extend interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Calculate the monthly spending trends for customers using window functions and joins.
ExtendUse joins, CASE WHEN, and date filtering to compare outcome rates before and after a decision.
HarbourVest PartnersUse ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
Replit
QuantcastExplain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
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Explain how you would prioritize and execute technical debt work without losing stakeholder alignment or delivery momentum.
ExtendIdentify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
ExtendDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
ExtendA framework for prioritizing AI product features based on user value, feasibility, evaluation quality, and trade-offs.
ExtendExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
ExtendExplain a sales strategy you built and executed, including segmentation, objection handling, and how it drove account growth.
Extend