Infrastructure Administrator III

Job Summary

The Infrastructure Administrator III serves as a senior technical resource for the organization’s infrastructure environment. This role leads advanced administration, infrastructure design, complex troubleshooting, hybrid cloud support, network architecture support, Microsoft 365 / Office 365 administration, Azure and identity governance, configuration standards, lifecycle planning, disaster recovery, security hardening, and infrastructure project leadership. This position is intended for a senior infrastructure professional who can independently lead complex initiatives, resolve high-impact technical issues, make senior-level technical recommendations, mentor lower-level staff, and help guide the organization’s transition from primarily on-premises infrastructure to a stable hybrid infrastructure model.

The role supports a casino environment where availability, security, compliance, careful change planning, vendor coordination, and rapid incident response are critical.

Lead administration, engineering, optimization, and lifecycle management of on-premises and cloud-connected infrastructure, including servers, virtualization, storage, backups, networking, identity, Microsoft 365, Azure, monitoring, and core IT services. Implement and improve infrastructure standards for reliability, security, performance, capacity, manageability, disaster recovery, operational consistency, and business continuity. Serve as the senior escalation point for complex infrastructure incidents involving servers, networks, storage, virtualization, backups, identity, Microsoft 365, Azure, authentication, performance, availability, or security controls.

Lead advanced Microsoft 365 / Office 365 administration, including Exchange Online, Teams, SharePoint, One Drive, licensing strategy, security configuration, retention support, collaboration standards, and service health response. Lead advanced Azure and Microsoft Entra , including hybrid identity, MFA, conditional access, enterprise application access, synchronization health, privileged access practices, device identity, tenant configuration support, and cloud security coordination. Lead advanced networking support involving routing, switching, VLAN design, firewall coordination, VPN architecture, wireless infrastructure, network segmentation, resiliency, and performance troubleshooting.

Lead advanced systems support involving Windows Server, SQL Server, Active Directory architecture, Group Policy design, DNS/DHCP strategy, certificate services, file services, virtualization, storage, and backup architecture. Own complex infrastructure projects end to end, including discovery, scope definition, technical design, risk analysis, business impact review, implementation planning, stakeholder communication, testing, rollback planning, documentation, and operational handoff. Support casino operations by designing reliable infrastructure for 24/7 uptime, minimizing risk during changes, coordinating maintenance windows, and ensuring rapid response to business-impacting incidents.

Establish and maintain configuration baselines, build standards, hardening guides, naming conventions, documentation standards, patching practices, monitoring standards, and operational runbooks. Evaluate capacity, performance trends, asset lifecycle needs, cloud adoption opportunities, licensing impacts, security risks, technical debt, and future infrastructure requirements. Mentor Infrastructure Administrator I and II team members through technical guidance, peer review, troubleshooting support, documentation review, and standards enforcement.

Partner with security teams to support vulnerability remediation, privileged access controls, logging, monitoring, backup integrity, hardening, incident response, and compliance efforts. Contribute to disaster recovery planning, backup strategy, recovery testing, business continuity planning, and infrastructure resilience improvements. Coordinate with vendors, managed service providers, gaming system vendors, surveillance vendors, facilities teams, procurement, management, and business stakeholders. Recommend…