A SQL Server Developer designs, implements, and manages databases using Microsoft's SQL Server platform. Their responsibilities include creating database systems, ensuring their stability, reliability, and performance, writing and optimizing SQL statements for data access and retention. They also design and develop ETL processes, prepare documentation, and perform regular system tests to ensure data security and integrity. They work closely with other developers, providing them with SQL best practices and improving query performance. Moreover, they troubleshoot and fix database-related issues, ensuring optimal performance and minimal downtime. Their goal is to provide reliable and easy-to-use database solutions.