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Speaker

Geoffrey Freeman

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talks

Director of Data Engineering T-Mobile

Geoffrey Freeman has spent most of his career working in massive scale online data delivery services. He is currently the Director of Data Engineering for the T-Mobile Finance division.

Bio from: Data + AI Summit 2025

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Talks & appearances

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Breaking Silos: Enabling Databricks-Snowflake Interoperability With Iceberg and Unity Catalog

As data ecosystems grow more complex, organizations often struggle with siloed platforms and fragmented governance. In this session, we’ll explore how our team made Databricks the central hub for cross-platform interoperability, enabling seamless Snowflake integration through Unity Catalog and the Iceberg REST API. We’ll cover: Why interoperability matters and the business drivers behind our approach How Unity Catalog and Uniform simplify interoperability, allowing Databricks to expose an Iceberg REST API for external consumption Technical deep dive into data sharing, query performance, and access control across Databricks and Snowflake Lessons learned and best practices for building a multi-engine architecture while maintaining governance and efficiency By leveraging Uniform, Delta, and Iceberg, we created a flexible, vendor-agnostic architecture that bridges Databricks and Snowflake without compromising performance or security.