Programmers Interview Questions
The questions to prepare for Programmers interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Evaluates coding discipline, readability, and performance awareness under time pressure.
Evaluates performance troubleshooting, measurement, and optimization strategy.
Assesses your baseline knowledge and your ability to prepare for structured technical screening.
Assesses your ability to explain UI architecture, state flow, and component responsibilities.
Assesses realtime update architecture and your approach to minimizing latency.
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Evaluates caching, API design, and performance optimization for high-frequency data.
Assesses your understanding of data modeling tradeoffs and fit-for-purpose decisions.
Tests your ability to translate requirements into a normalized, practical schema.
Calculate weighted average selling prices by product using a date-range join, aggregation, and NULL handling.
Costar
Costar GroupUse a normalization CTE and self-join to find FanDuel player records sharing an email or phone number.
FanduelUse LEFT JOINs, a CTE, and aggregation to summarize 2025 claims and completed payments for active Guidewire PolicyCenter policies.