Hiring a Microsoft SQL developer can significantly enhance your data management. They are skilled in designing, testing, and maintaining databases, ensuring optimal performance and security. They are adept at writing complex SQL queries, creating stored procedures, and optimizing data retrieval. Their expertise can help in executing large scale data migrations, implementing disaster recovery plans, and providing valuable insights through data analysis. Their knowledge in SQL Server Integration Services (SSIS), SQL Server Reporting Services (SSRS), and SQL Server Analysis Services (SSAS) can greatly facilitate business intelligence and analytics.