A Migrations Developer is primarily responsible for managing and implementing changes in database schemas. They create and execute scripts to migrate data from one format or system to another, ensuring data integrity and consistency. They work closely with the development team to understand schema changes, handle version control, and apply necessary updates. Additionally, they mitigate potential risks associated with data migration, like data loss or corruption. They may also be involved in creating backup strategies, troubleshooting migration-related issues, and documenting the migration process. Their goal is to ensure smooth transitions during upgrades or system migrations.