A Database Design and Development Developer is responsible for creating, testing, and maintaining databases tailored to users' needs. They design the structure of a database, which includes the tables, relationships between tables, views, indexes, and procedures, ensuring it is efficient and secure. They also work on developing databases with a focus on end-user accessibility, creating user-friendly interfaces and easy-to-navigate systems. Furthermore, they troubleshoot any issues, implement necessary updates, and ensure data integrity and security. They often collaborate with other IT professionals and stakeholders, understanding their data needs and translating them into effective database solutions.