A Cloud SQL Developer designs, develops, and manages databases on cloud platforms. They create and implement database schemas and configurations, migrate data from traditional databases to cloud databases, optimize database performance, and ensure data security. They also work on troubleshooting and resolving database issues. They interact with various teams, understanding their data needs and translating them into database solutions. They are expected to stay updated on the latest cloud technologies and services. Their role is crucial in making data easily and securely accessible for data analysis, thus aiding in business decision-making.