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