A Microsoft Sync Framework developer designs and implements data synchronization solutions. They use Microsoft Sync Framework to create applications that can share data across multiple platforms and data sources. This involves creating custom data providers, handling conflicts, and managing synchronization metadata. They also optimize data synchronization processes to ensure efficient data transfer. Their work enables offline access to data, seamless collaboration, and data backup. They are responsible for troubleshooting any sync issues and ensuring data integrity and security. They work closely with other software developers, database administrators, and network engineers to integrate sync capabilities into applications.