Senior Data/ML Engineer — Databricks Forecasting Platform | Remote

Headquarters: Remote URL: https://www.toptal.com/ About the Role We're looking for a Senior Data/ML Engineer to refactor, operationalize, and improve an existing time series forecasting platform that's already live and driving real business value. This is not a greenfield build — the focus is modernizing a Databricks-based forecasting system that's been maintained primarily by a single developer for years. You'll reduce technical debt, strengthen testing and observability, and raise the engineering bar on a system the business already depends on. If you'd rather bring discipline and maturity to an existing production system than start from a blank slate, this is built for that. What You'll Do • Review the current forecasting platform architecture and identify areas for improvement • Refactor existing Databricks, Python, and PySpark implementations • Move business logic out of Databricks notebooks and into reusable Python modules or packages • Improve separation of concerns between orchestration and core business logic • Establish stronger engineering standards and help define what "good" looks like for the platform • Implement or improve au