Data First Interview Questions
The questions to prepare for Data First interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Assesses your ability to build resilient cloud architectures with strong availability and recovery guarantees.
Tests your systematic approach to performance analysis and remediation across distributed components.
Tests your ability to design scalable ingestion systems for high-throughput data at Data First.
Tests your knowledge of redundancy, failover, and resilience patterns for distributed systems.
Tests prioritization and decision-making under pressure, especially how you balance speed, quality, and long-term technical cost.
Explain how you deliver near-term business value while protecting system maintainability and managing stakeholder pressure.
Tests your understanding of partitioning choices and their impact on performance and operations.
Evaluates your approach to observability, troubleshooting, and root-cause analysis in production systems.
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Build an efficient PostgreSQL report that aggregates partitioned project events and costs without join multiplication.
McKinsey &Optimize a PostgreSQL query with multiple joins and aggregations over large tables while preserving correct filtered totals.
GoogleDetect a heavily skewed join key and produce a deterministically salted join result for more balanced large-scale processing.
Databricks