A Google Cloud Datastore developer designs, builds, and maintains scalable and distributed databases using Google Cloud Datastore. They manage data transactions, queries, and indexing, ensuring efficient data storage and retrieval. They handle data modeling and schema design, integrating applications with Datastore APIs. They also implement security measures and access controls, ensuring data integrity and privacy. Additionally, they monitor performance, troubleshoot issues, and optimize database performance. They work with teams to understand data needs and translate them into effective database solutions. Their role is crucial in leveraging Google Cloud technologies for data-driven decision making and business operations.