Description The Microsoft System Administrator serves as the senior technical authority for Microsoft infrastructure and enterprise collaboration services supporting the SEC ISS contract. This role ensures secure, resilient, and scalable operations across Windows Server, Active Directory, Microsoft 365 services, and Azure resources in alignment with federal security and compliance requirements. The position leads architecture, advanced configuration, and complex integration efforts across Microsoft platforms and enterprise infrastructure. It also provides technical leadership for Microsoft Teams conferencing and large-scale streaming support for high-visibility SEC events, including commission meetings and town halls.PRIMARY RESPONSIBILITIESMicrosoft Platform Administration- Serve as the senior technical lead for enterprise Windows Server, Active Directory, and Group Policy administration.- Design and implement advanced configurations, upgrades, and hardening for Microsoft server and collaboration environments.- Administer Microsoft 365 services, including Exchange Online, SharePoint Online, and Teams, to ensure high availability and performance.- Ensure secure, reliable, and high-performing Microsoft platform operations across the enterprise.Azure Cloud and Identity Services- Design, deploy, and manage Azure resources, including virtual machines, storage, and networking services.- Administer Azure Active Directory (Microsoft Entra ID) and hybrid identity services.- Lead integration of Azure cloud services with enterprise systems and on-premises dependencies.- Optimize platform performance, scalability, and operational resilience.Teams Collaboration and Enterprise Streaming- Architect and support enterprise Microsoft Teams collaboration, conferencing, and streaming capabilities.- Lead planning and delivery support for Teams Live Events and enterprise broadcast solutions.- Oversee live event streaming operations to ensure audio/video quality, scalability, and rapid