Senior IT Administrator

Title:

Senior IT Administrator

Location:

Phoenix, Arizona

Job Type: Full-Time / On-Site

We are seeking an experienced Sr. IT Admin to manage the day-to-day administration, maintenance, and support of the Company’s technology infrastructure and ensure the reliable operation of its IT systems and services. This hands‑on role requires a strong technical background and a proactive approach to managing networks, servers, cloud environments, cybersecurity, and end‑user support. The IT Manager will troubleshoot complex technical issues, implement technology improvements, and help drive initiatives that enhance system performance, security, and operational efficiency.

The ideal candidate is a collaborative leader who enjoys rolling up their sleeves, solving technical challenges, and delivering exceptional support to employees while maintaining a secure and reliable technology environment.

• Manage the day‑to‑day operation, availability, and continuous improvement of the Company’s enterprise IT infrastructure, cloud services, and technology operations.
• Administer and support the Company’s 24×7 production infrastructure, including Windows Server, Hyper‑V, Microsoft IIS, MSSQL, Dell Compellent SAN, Dell switches, Palo Alto NGFW, disaster recovery solutions and datacenter operations.
• Partner with IT leadership and software development teams to plan and implement infrastructure modernization, cloud initiatives, application hosting, and production deployments while proactively monitoring enterprise systems and implementing improvements that enhance performance, availability, reliability, scalability, and security.
• Configure, administer, and maintain the Company’s enterprise network and telecommunications infrastructure, including switching, VPNs, wireless networks, firewalls, internet connectivity, and the Shore Tel/Mitel VoIP platform with SIP trunk infrastructure.
• Administer Microsoft Cloud Services, including Microsoft 365, Microsoft Entra (Hybrid), Intune, Microsoft Defender, Azure, Exchange (hybrid), identity management, endpoint management, and licensing.
• Manage technology lifecycle activities, including server, storage, network, workstation, and software deployments, upgrades, patching, asset management, and hardware refreshes.
• Lead Helpdesk operations by ensuring timely resolution of hardware, software, network, and user access issues while delivering excellent customer service.
• Develop and maintain IT operational documentation, standards, procedures, and knowledge transfer materials.
• Manage relationships with technology vendors, software providers, maintenance partners, and cloud service providers while assisting with budgeting, procurement, licensing, and contract renewals.
• Participate in an on‑call rotation and respond to critical production issues outside normal business hours as required.

• Bachelor’s degree in information technology, Computer Science, Information Systems, or a related field, or an equivalent combination of education and progressively responsible enterprise IT experience.
• Minimum 7–10 years of experience administering enterprise Microsoft infrastructure in a production environment, including at least 3 years in a senior systems administrator, infrastructure engineer, or IT management role supporting mission‑critical business systems.
• Extensive experience designing, administering, and supporting 24×7 on‑premises and hybrid Microsoft infrastructure, including Windows Server, Hyper‑V, Microsoft IIS, Microsoft SQL Server, enterprise storage (SAN), backup, disaster recovery, high availability, datacenter operations, and customer‑facing web application hosting.
• Extensive experience administering a Hybrid Microsoft Identity and Microsoft Cloud Services environment, including Active Directory, Microsoft Entra , Microsoft 365, Exchange Hybrid, Azure, Microsoft Intune, Microsoft Defender, Conditional Access, endpoint management, identity synchronization, Microsoft licensing, and cloud administration.
• Experience administering enterprise networking and telecommunications infrastructure, including Layer 2 switching, VLANs, VPNs, wireless networking, Palo Alto…