System Administrator 3

Key Responsibilities

• Administer Windows Server environments (on-premises and cloud)
• Manage Active Directory, Group Policy, DNS, and DHCP
• Support Microsoft 365 services (Exchange Online, Entra ID/Azure AD)
• Maintain system performance, availability, and configuration
• Execute structured patching for servers and core systems
• Cook up with leadership on scheduling and system impact
• Support vulnerability remediation aligned to security priorities
• Validate patches prior to deployment
• Track patch compliance and status
• Support security and compliance practices
• Implement security controls defined by the Information Security Office
• Support identity and access management practices, including MFA
• Aid with system hardening, logging, and monitoring integrations
• Provide support for audits and compliance activities
• Monitor systems and respond to alerts and operational issues
• Provide Tier 2/3 support for infrastructure incidents
• Participate in incident response and escalation processes
• Contribute to root cause analysis and service improvements
• Administer backup and recovery solutions
• Perform and validate backup and restore testing
• Support recovery objectives (RTO/RPO)
• Follow defined change management processes
• Execute infrastructure changes in a controlled manner
• Participate in CAB or similar governance processes
• Partner with Network Engineering on infrastructure dependencies
• Coordinate with End User Services on user-impacting changes
• Support Application/Data teams on system integrations
• Communicate system status, risks, and issues to leadership

Required Qualifications

• Experience administering Windows Server environments
• Strong knowledge of Active Directory and Group Policy
• Experience supporting Microsoft 365 (Exchange Online, Entra ID/Azure AD)
• Experience with patch management and system maintenance
• Basic understanding of networking concepts

Preferred Qualifications

• Experience in government or regulated environments
• Familiarity with hybrid infrastructure (on-premises and Azure)
• Familiarity with NIST or similar frameworks
• Experience with virtualization (VMware or Hyper-V)
• Exposure to monitoring, SIEM, or endpoint management tools