A SQL Server DBA (Database Administrator) plays a critical role in managing, maintaining, and optimizing SQL Server databases within an organization. Key responsibilities include database installation, configuration, backup and recovery, performance tuning, and security management. Required skills encompass strong knowledge of SQL, T-SQL, performance monitoring tools, and troubleshooting. Typically working in IT departments, DBAs collaborate closely with developers, data analysts, and system administrators. Career progression includes roles such as Senior DBA, Database Architect, or Data Engineer, offering opportunities to specialize in cloud databases or big data technologies.