Senior Machine Learning Engineer (Multiple Positions)

Build and optimize large-scale machine learning systems across the full ML lifecycle, from data preparation and feature engineering to hyperparameter tuning, evaluation, and model selection. Apply statistical learning to model real-world user behavior, run experiments and significance analyses, and develop deep learning models to predict metrics and treatment effects. Use big data frameworks for analytics, collaborate with cross-functional teams on ML-driven product strategy, and mentor junior engineers and interns.