OpenX Interview Questions
The questions to prepare for OpenX interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Merge overlapping intervals by sorting start times and greedily extending the current range.
OpenXCompute rolling seven-day impression and click averages for each publisher using PostgreSQL window functions.
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Explain how you would prioritize and execute technical debt work without losing stakeholder alignment or delivery momentum.
OpenXInvestigate why a key KPI moved the wrong way after a product change and separate signal from noise.
OpenXExplain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.
OpenXExplain how bias and variance affect generalization, and how model complexity changes the balance.
OpenXExplain how to reduce memory usage and stabilize a Pandas-based batch pipeline that is failing on larger inputs.
OpenXEstimate sample size and power for detecting a small conversion lift in an A/B test on a mobile app feature.
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