Senior Machine Learning Modeler, Advanced Insights & Modeling

We're looking for a Senior Machine Learning Modeler to pioneer the design of intelligent systems that power the future of decision-making across Block—spanning Cash App, Square, and Corporate domains such as Treasury, Cost, and Accounting. The role involves leading the architecture and delivery of AI-driven, self-adaptive models that forecast, reason, and act—shaping how Block allocates resources, scales growth, and plans for the future.

Requirements

• 8+ years of experience in machine learning or software engineering, with proven experience leading large-scale ML projects
• Deep expertise in forecasting, predictive modeling, and value estimation, including statistical and ML-based methods
• Advanced proficiency in Python, and experience with libraries such as scikit-learn, XGBoost, LightGBM, and pandas/numpy
• Strong experience building end-to-end ML pipelines, leveraging tools like Airflow, Spark, BigQuery, or equivalent systems
• Demonstrated success in designing systems that support explainability, reproducibility, and operational reliability
• Strong understanding of data modeling, feature engineering, and model evaluation in production contexts
• Experience mentoring engineers and shaping team-wide technical direction
• Experience with forecasting frameworks (e.g., Prophet, statsmodels, or custom time-series methods)
• Background in financial modeling, planning, or customer lifetime value prediction
• Experience building automated or interactive explainability systems for ML-driven forecasts

Benefits

• Remote work
• Medical insurance
• Flexible time off
• Retirement savings plans
• Modern family planning