IT System and Network Administrator

Job Description:

We are seeking an experienced System and Network Administrator to support and maintain a reliable enterprise network in Peoria, Arizona. This IT position is ideal for someone who is detail-oriented and can manage core infrastructure, strengthen network security, and ensure stable connectivity across business operations. The role requires hands-on expertise with Cisco networking equipment, firewall platforms, Microsoft Windows Servers, and Active Directory in a fast-paced technical setting.

Essential Duties & Responsibilities:

• Provide training and guidance on infrastructure solutions and related topics to internal IT staff and end users
• Designs, analyzes, maintains, and implements LAN/WAN equipment, network, and telephony infrastructure, including maintenance of security measures and solutions • Administer and maintain network infrastructure, including Cisco routers, switching environments, and LAN connectivity to support daily operations
• Administer virtualization solutions, such as VMware ESXi and Microsoft Hyper-V • Support Active Directory, Group Policy, DNS, DHCP, and identity management systems
• Monitor network performance, identify connectivity issues, and resolve disruptions to maintain consistent system availability
• Configure, manage, and optimize firewall technologies to protect systems and enforce network security standards
• Troubleshoot hardware, software, and communication issues across the network and implement timely corrective actions
• Perform network updates, configuration changes, and infrastructure improvements while minimizing operational downtime
• Working knowledge of Windows, Linux Servers, Office 365, Active Directory administration, and access management
• Strong hands-on knowledge of Cisco routers, Cisco networking, and LAN environments • Familiarity with network documentation, maintenance processes, and operational best practices
• Support Multiple sites network infrastructure
• Provide Level 2 IT support, troubleshooting system and user issues

Qualifications:

• 5 or more years of experience as a network administrator
• Minimum of 3 years operational experience as a system administrator
• Extensive operational experience with IPsec VPN tunnel provisioning across multiple platforms
• Strong understanding of networking concepts (TCP/IP, VLANs, VPNs, firewalls)
• Demonstrated ability to adapt quickly to changing priorities and procedures in a dynamic manufacturing environment
• Strong understanding of cybersecurity protocols
• Experience with DoD DFARS, NIST, and CMMC cybersecurity practice standards a plus
• Ability to work in a fast-paced environment and be a team player with a proactive and adaptable approach