Telefónica Data Scientist Interview Questions
The questions to prepare for a Telefónica Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Tests your approach to class imbalance in fraud or anomaly detection models.
TelefónicaTests understanding of regularization effects and model selection for churn prediction.
TelefónicaTests your ability to explain core mechanics of gradient boosting and loss optimization.
TelefónicaEvaluates your approach to designing an end-to-end fraud detection system.
TelefónicaTests your performance tuning skills for distributed data processing.
TelefónicaTests your ability to connect data sourcing to operational impact in telecom reliability.
TelefónicaTests SQL windowing and percentile-style logic for telecom usage analytics.
TelefónicaTests product-focused modeling choices for personalization in a large-scale media platform.
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Aggregate user activity by week, then use LAG to compare sessions and watch time versus the prior active week.
B Lab Global
Tapad
ScaleUse a CTE, join, and aggregation to find bet365 users with the 10 highest settled stake amounts.
bet365TelefónicaUse a time-based window to identify users with more than three failed attempts within five minutes.
Chime
ByteDance