Senior Data Scientist
Core
Build and improve censored bid-landscape models, real-time win probability estimation, and hierarchical lift estimation models for a live ad exchange processing hundreds of millions of auction requests daily.
Role type
Senior Machine Learning Engineer (AdTech)
Builds
Predictive modeling and optimization platform integrated with a live ad exchange
Domain
Programmatic advertising, AdTech, real-time bidding
Deliverable
production ML models
Required skills
Python (numpy, pandas, scikit-learn), SQL, XGBoost, LightGBM, CatBoost, Spark/PySpark, feature engineering, A/B testing, SHAP, permutation importance
Preferred skills
AdTech modeling (CTR/CVR, bid-landscape), sparse/delayed label handling, counterfactual evaluation, causal inference, Vertex AI
Technologies
Python, SQL, XGBoost, LightGBM, CatBoost, Spark, PySpark, Vertex AI
Responsibilities
Build censored bid-landscape models, develop real-time win probability estimation, design hierarchical lift estimation models, implement advertiser-level calibration strategies, design robust offline evaluation frameworks, contribute to scalable ML platform design
Seniority
Senior, hands-on IC
