Demo

System Administrator III

Phoenix Staff, Inc.
Tempe, AZ Full Time
POSTED ON 5/30/2026
AVAILABLE BEFORE 7/23/2026
Title: System Administrator III

Location: Tempe, AZ (Must be local to the Tempe, AZ area)

Type: Full-Time Permanent

Compensation: $97-120k

This position is responsible for leading the design, stability, and continuous improvement of enterprise infrastructure across both cloud and on-premises environments. The role focuses on ensuring systems are secure, scalable, and reliable while supporting business-critical operations. It also plays a key part in guiding technical teams, driving modernization efforts, and aligning infrastructure capabilities with organizational needs.

Your Role

  • Design and deploy resilient infrastructure solutions across Windows Server, virtualization platforms, and cloud environments to support business operations.
  • Oversee enterprise virtualization platforms including Nutanix, VMware, and Hyper-V, ensuring performance, high availability, and disaster recovery readiness.
  • Manage and enhance Azure services such as IaaS, file services, and hybrid identity integrations with on-premises systems.
  • Evaluate and introduce new infrastructure technologies, aligning solutions with long-term business and IT strategies.
  • Perform capacity planning, system tuning, and lifecycle management to optimize performance and resource utilization.
  • Administer storage environments including SAN, NAS, backup systems, and cloud storage to maintain data integrity and availability.
  • Implement and maintain security controls such as access management, system hardening, and audit compliance across infrastructure systems.
  • Coordinate patching and vulnerability remediation efforts while minimizing operational disruption.
  • Provide mentorship and technical guidance to team members, promoting best practices and continuous improvement.
  • Act as an escalation point for complex infrastructure issues and lead efforts to resolve critical incidents.
  • Collaborate with cross-functional teams to deliver integrated infrastructure solutions.
  • Develop operational standards, automation strategies, and process improvements to increase efficiency and service quality.
  • Maintain core services including Active Directory, DNS, DHCP, and related systems to ensure reliability.
  • Manage secure file-sharing environments and external data exchange processes with appropriate controls.
  • Oversee backup and recovery operations to ensure critical data is protected and recoverable.
  • Create and maintain technical documentation covering architecture, configurations, and procedures.
  • Communicate technical concepts clearly to stakeholders and provide timely updates on system status and issues.
  • Own issues from identification through resolution, ensuring documentation and knowledge transfer are completed.

What You’ve Got

  • Eight or more years of experience supporting and designing enterprise-level Windows Server environments.
  • Five or more years working with virtualization platforms such as Nutanix, VMware, or Hyper-V in production environments.
  • Four or more years of experience with Microsoft Azure, including cloud services, hybrid connectivity, and migrations.
  • Strong knowledge of infrastructure fundamentals including TCP/IP, DNS, DHCP, Active Directory, Group Policy, and file services.
  • Experience supporting systems tied to enterprise applications and databases such as SQL or Oracle.
  • Solid background in storage technologies, backup solutions, and disaster recovery planning.
  • Ability to define and enforce technical standards, operational processes, and best practices.
  • Demonstrated experience mentoring team members and contributing to process improvements.
  • Strong problem-solving skills with a proactive approach to identifying and preventing issues.
  • Clear communication skills with the ability to explain technical concepts to both technical and non-technical audiences.
  • Bachelor’s degree in Information Technology, Computer Science, or a related field, or equivalent experience.
  • Industry certifications such as Microsoft, VMware, Nutanix, or Azure credentials preferred.

Benefits

  • Medical, dental, and vision insurance
  • 401(k) plan

To find more great tech-centric jobs, please visit www.phoenixstaff.com.

Salary : $97,000 - $120,000

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