Role Summary Own the target-state data architecture on Google Spanner, ensuring the new data model satisfies functional correctness, performance SLOs, and transactional semantics required by 1000+ applications before large-scale app rewrites occur. This role is not a schema converter. It is a distributed systems architect role. Key Responsibilities Data Architecture & Modeling Define the Logical Canonical Data Model (LCDM) independent of physical storage. Design Spanner-native physical schemas: