HDFC Bank Data Scientist Interview Questions
The questions to prepare for a HDFC Bank Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Find the top 3 customers in each region by transaction volume using joins, aggregation, and window ranking.
HDFC BankRank the top 3 completed rides per vehicle per day using joins, a CTE, and ROW_NUMBER.
WaymoUse ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
Replit
QuantcastEstimate sample size and power for an experiment, define MDE and guardrails, and decide whether the test is worth running.
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Explain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.
HDFC BankExplain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
HDFC BankDesign a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.
HDFC BankDevelop an ETL pipeline to process 10TB of daily sales data with strict data quality validations and orchestration requirements.
HDFC BankDefine a practical metric stack for a new digital banking feature, from adoption and activation to retention and risk guardrails.
HDFC BankExplain common machine learning evaluation metrics and when each is useful.
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