Senior IT Infrastructure Administrator

Job Summary:

We're hiring a Senior IT Infrastructure Administrator to lead and support a modern Windows infrastructure across both on-premises and cloud environments. This is a senior-level, Tier 3 role responsible for designing, maintaining, and optimizing enterprise systems while driving automation, security, and infrastructure improvements. You'll work with Windows Server, Active Directory, Azure/Entra ID, virtualization, PowerShell, and enterprise management tools to ensure a secure, highly available environment.

Responsibilities:

• Design, administer, and support enterprise Windows Server environments (2016/2019/2022/2025)
• Manage Active Directory, Azure/Entra ID, Group Policy, DNS, DHCP, DFS, and NTFS
• Support and optimize Hyper-V virtualization infrastructure
• Develop PowerShell automation to improve efficiency and reduce manual work
• Lead enterprise patch management using Tanium
• Manage SCCM deployments and endpoint administration
• Monitor infrastructure health using enterprise monitoring tools
• Troubleshoot complex Tier 3 infrastructure issues and perform root cause analysis
• Participate in infrastructure architecture, upgrades, and technology planning
• Collaborate with security, engineering, and global IT teams
• Create documentation, technical standards, and mentor junior team members

Required Qualifications:

• Bachelor's Degree in IT (or equivalent experience)
• 7+ years of Windows Systems Administration or Infrastructure experience
• Experience supporting enterprise Windows Server environments
• Strong Active Directory administration experience
• Experience with Azure/Entra ID
• Advanced PowerShell scripting
• Hyper-V virtualization experience
• Experience with enterprise patch management (Tanium or similar)
• Expert-level troubleshooting of Windows infrastructure

Preferred Skills:

• SCCM Administration
• Citrix
• NetScaler
• WhatsUp Gold
• Delinea (Privileged Access Management)
• Lansweeper
• Azure Cloud Services
• Hybrid Infrastructure

Ideal Candidate:

You enjoy solving complex infrastructure problems, automating repetitive tasks, improving security, and helping build scalable enterprise environments. You're comfortable serving as the technical expert and leading infrastructure initiatives.