Microsoft's Office 365 Enterprise Cloud team is seeking a Site Reliability Engineer to join their mission-critical government cloud services team. This role combines software development expertise with operational excellence to ensure the highest standards of security, reliability, and performance for government customers. The position requires working with Microsoft's most sophisticated enterprise and government clients, delivering cloud versions of trusted products like Exchange, SharePoint, and Teams. The ideal candidate will be passionate about distributed systems, thrive in a fast-paced technical environment, and have strong collaboration skills. This role offers the unique opportunity to impact millions of users while working with cutting-edge cloud technology in a security-cleared environment. The position includes hybrid work arrangements with up to 50% work from home capability, comprehensive benefits, and competitive compensation. Candidates must possess or be willing to obtain high-level security clearances (TS/SCI with polygraph) and meet strict citizenship requirements due to the sensitive nature of the work.