Provide operations and maintenance (O&M) support for mission-critical government systems, requiring broad and deep knowledge across applicable technologies; including: Bigfix patch management and compliance monitoring;Microsoft Active Directory, Internet Information Services (IIS), Public Key Infrastructure (PKI), Windows Server Update Services (WSUS); Office 365 , Cloud infrastructures: Azure, Amazon Web Services (AWS); Endpoint management technologies such as Intune; Identity management (Okta); Redhat Linux; Zscaler; Powerbroker; AlienVault; Automation. -Must be skilled in Windows Server 2019 and later, Red Hat Enterprise Linux (RHEL) 9 and later, BigFix patch management, Active Directory, Active Directory Certificate Services (AD CS), Internet Information Services (IIS), OpenSSL, Windows 11, Office 365 administration, secure network architecture, hardware maintenance, system management tools, and backup solutions.