Aaon, Inc.
Designs and manufactures energy-efficient heating, ventilation, and air conditioning systems.
Infrastructure Administrator
Design, implement, and support enterprise network and server infrastructure.
Job Highlights
About the Role
The Infrastructure Administrator III is responsible for the design, implementation, configuration, and support of the organization’s IT infrastructure, with a primary focus on network and server systems. This role demands advanced technical expertise, independent problem‑solving abilities, and active participation in infrastructure planning and project execution, while collaborating with senior IT staff and leadership to ensure stability, performance, and security. • Design, configure, and maintain enterprise LAN, WLAN, WAN, firewalls, switches, and VPNs. • Lead infrastructure initiatives such as network redesigns, system migrations, and hardware upgrades. • Monitor network performance and proactively resolve issues to ensure high availability and reliability. • Implement network security measures, including firewall configurations, access controls, and patch management. • Support and maintain Windows Server environments and VMware virtualization platforms. • Administer core infrastructure services such as DNS, DHCP, and Active Directory. • Provide Tier III support for escalated technical issues with independent troubleshooting. • Participate in a rotating on‑call schedule and respond to critical incidents as needed.
Key Responsibilities
- ▸network design
- ▸firewall config
- ▸server admin
- ▸vmware
- ▸active directory
- ▸tier iii
What You Bring
• Require 5+ years of progressive experience in network and systems administration within an enterprise IT environment. • Preferred certifications include Cisco CCNA/CCNP, CompTIA Network+, or VMware VCP. • Advanced knowledge of network protocols and services (TCP/IP, VLANs, VPNs, DNS, DHCP). • Strong diagnostic and troubleshooting skills across networking, virtualization, and server systems. • Ability to work independently, prioritize tasks, and communicate technical information clearly. • Familiarity with cloud networking and hybrid infrastructure is a plus.
Requirements
- ▸5+ years
- ▸ccna
- ▸ccnp
- ▸network+
- ▸tcp/ip
- ▸troubleshooting
Work Environment
Onsite