Title: Senior IT Administrator
Location: Phoenix, Arizona
Job Type: Full-Time / On-Site
Role SummaryWe 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.
Responsibilities - 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 24x7 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 ShoreTel/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.
Qualifications- 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 24x7 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 ID, 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 Next-Generation Firewalls, internet connectivity, SIP trunking, and ShoreTel/Mitel VoIP or comparable enterprise voice platforms.
- Experience deploying, monitoring, troubleshooting, and optimizing enterprise infrastructure and application environments using monitoring, logging, alerting, and performance management solutions while partnering with software development teams to support application hosting, infrastructure modernization, and production deployments.
- Strong understanding of enterprise cybersecurity, infrastructure lifecycle management, and operational best practices, including vulnerability remediation, patch management, endpoint protection, asset management, hardware refresh planning, business continuity, and infrastructure hardening.
- Demonstrated ability to troubleshoot complex enterprise infrastructure issues spanning servers, virtualization, storage, networking, Microsoft cloud technologies, and production applications while producing high-quality technical documentation and communicating effectively with executive leadership, software development teams, vendors, and business stakeholders.
- Ability to participate in an on-call rotation and respond to critical production issues outside normal business hours.
Bonus Skills and Experience- Experience planning and executing cloud migration initiatives, including migrating on-premises infrastructure, applications, and services to Microsoft Azure.
- Experience designing and implementing hybrid cloud architectures utilizing Microsoft Azure and on-premises infrastructure.
- Experience modernizing Microsoft IIS/.NET applications through containerization and orchestration technologies such as Docker and Kubernetes (AKS or on-premises Kubernetes).
- Experience with enterprise cybersecurity frameworks, regulatory compliance, and security governance in highly regulated environments.
IT | Information Technology | Infrastructure | Enterprise Infrastructure | Systems Administration | Systems Engineering | IT Operations | Network Administration | Cloud Infrastructure | Datacenter | Production Environment | Enterprise Environment | Hybrid Infrastructure | Helpdesk | IT Support
