Scale Interview Questions
The questions to prepare for Scale interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Aggregate user activity by week, then use LAG to compare sessions and watch time versus the prior active week.
ScaleUse joins, CASE WHEN, and date filtering to compare outcome rates before and after a decision.
HarbourVest PartnersBuild a daily series and compute a 30-day trailing moving average of task bookings using window functions.
TaskRabbit
RBCFlatten an arbitrarily nested list of integers using recursion or an explicit stack while preserving order.
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Plan a phased rollout for a new operational initiative with clear stages, success criteria, and risk controls.
ScaleBuild a KPI hierarchy that links frontline operational signals to business outcomes and supports better decisions.
ScaleDesign an LLM serving system that balances latency, cost, scalability, and safety for production traffic.
ScaleBuild a classifier for a highly imbalanced dataset and choose training and evaluation methods that surface rare positives.
ScaleFramework for choosing a feature's primary success metric and guardrails before launch.
ScaleDesign an experiment to determine whether a new product feature causes a meaningful retention lift without harming key guardrail metrics.
Scale