Idfc First Bank Data Scientist Interview Questions

Calculate each IDFC FIRST Bank customer's rolling 7-day transaction average with a date-based window frame.

Window FunctionsDate FunctionsRunning TotalsIdfc First Bank

Compare prompt engineering and fine-tuning for an LLM that gives personalized guidance, then show how you would build and evaluate it.

Language ModelsWord EmbeddingsTokenizationIdfc First Bank

Use worst-case reasoning to find the minimum number of sock draws needed to guarantee a matching pair.

combinatoricsExpected ValueConditional ProbabilityIdfc First Bank

Build an imbalanced binary classifier for payment fraud detection using cost-sensitive learning, threshold tuning, and precision-recall evaluation.

Cross-ValidationFeature EngineeringSupervised LearningIdfc First Bank

Define a success metric for a new feature that captures real user value, not just raw usage.

MetricsFeature Prioritizationuser valueIdfc First Bank

Design an interactive Tableau dashboard that defines, calculates, and diagnoses key IDFC FIRST Bank loan portfolio risk metrics.

dashboardsKPIoperational metricsIdfc First Bank