Marlabs Interview Questions
The questions to prepare for Marlabs interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Return the second-highest distinct non-null salary from a single employee table.
Tests how interfaces and abstract classes differ in contracts, shared state, inheritance, and when to choose each.
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Approach for maintaining data quality and integrity across ETL pipelines.
Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
Explain how you track project execution and report status to different stakeholders using clear tools, metrics, and escalation rules.
Define a success metric for a new feature that captures real user value, not just raw usage.
Explain what a p-value means, how it relates to statistical significance, and how to describe it clearly to non-technical stakeholders.
Define a practical metric framework for engineering velocity, project health, and delivery success.