A senior database administrator (DBA) is responsible for maintaining the integrity and quality of a database system. As a senior DBA, your job duties include ensuring that the server security is up-to-date, performing routine back-ups, and designing and implementing tests of the system to address issues with accessing data. Qualifications needed for a career as a senior database administrator include a bachelor’s degree in information systems or computer science and several years of experience working with databases. Other qualities include strong analytical problem-solving skills and a careful eye for detail.