The developer should be proficient in database design, programming languages, and SQL.The key responsibilities of a Database Developer may include:1.Developing database solutions to store and manage large amounts of data.2.Creating database schemas that represent and support business processes.3.Optimizing database performance by identifying and resolving issues with indexing, query design, and other performance-related factors.4.Developing and maintaining database applications and interfaces that allow users to access and manipulate data.A successful Database Developer should have strong technical skills, including proficiency in database design, programming languages, and SQL. They should have experience working with large and complex data sets and knowledge of relational databases and SQL. The developer should also have experience with database management systems, such as Oracle, MySQL, or SQL Server.