Senior Infrastructure Administrator - Hybrid Cloud & 24/7 Ops

Viejas Casino & Resort; Alpine (TX); On-site; USD 110,000 - 140,000; Full time

Job summary

Viejas Casino & Resort in Texas seeks an Infrastructure Administrator III to lead design, implementation, and ongoing operation of our hybrid on‑premises and cloud infrastructure. You will guide complex deployments, mentor staff, and ensure security, compliance, and rapid incident response in a high-availability casino environment.

The role covers servers, virtualization, storage, networking, Microsoft 365, Azure, and identity governance, with a focus on disaster recovery, change control, and

Qualifications

• Must have 6+ years of systems administration, network administration, or related IT experience.
• Advanced hands-on experience with Windows Server, SQL Server, Active Directory, virtualization, and on-premises infrastructure.
• Experience leading infrastructure projects and migrations.
• Strong knowledge of Microsoft 365 / Office 365 and Azure administration.
• Ability to mentor junior staff and collaborate with security teams.

Responsibilities

• 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, OneDrive, licensing strategy, security configuration, retention support, collaboration standards, and service health response.
• Lead advanced Azure and Microsoft Entra ID support, 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 and implement automation, scripting, monitoring, and process improvements to reduce manual effort and increase operational consistency.
• Work within defined response windows and elevate incidents within established timeframes.
• Maintain a high level of team member satisfaction through clear communication, professionalism, technical ownership, and customer service.
• Work effectively in a multicultural environment.
• Operate with limited supervision while demonstrating full proficiency and senior-level judgment within the discipline.
• Support a 24/7, 365-day operation and maintain flexibility to work day, swing, graveyard, weekend, holiday, maintenance window, and on-call assignments as needed based on business needs.

Skills

Windows Server

Azure

Microsoft 365

Networking

Education

Associate degree

Bachelor's degree

Advanced IT certifications

Tools

PowerShell

Azure PowerShell

VMware

Nutanix

Job description

Viejas Casino & Resort in Texas seeks an Infrastructure Administrator III to lead design, implementation, and ongoing operation of our hybrid on‑premises and cloud infrastructure. You will guide complex deployments, mentor staff, and ensure security, compliance, and rapid incident response in a high-availability casino environment.

The role covers servers, virtualization, storage, networking, Microsoft 365, Azure, and identity governance, with a focus on disaster recovery, change control, and