IT Network Consultant

American IT Systems•Irvine, CA

1d•Hybrid

About The Position

We are looking for an experienced IT Network Engineer to support day‑to‑day network operations and assist with ongoing infrastructure upgrades across multiple manufacturing sites. This role is primarily operational (60%), including troubleshooting, break/fix work, and supporting production‑critical network issues. The remaining 40% will focus on project work such as firewall upgrades, SD‑WAN modernization, and plant network refresh initiatives. The ideal candidate has deep hands‑on experience with routing and switching (Cisco preferred), Palo Alto Networks firewalls, and ideally some background supporting manufacturing/OT environments.

Requirements

Strong hands‑on experience with Cisco routing and switching (Catalyst/Nexus/ISR/ASR).
Solid understanding of OSPF, BGP, STP, VLANs, trunking, EtherChannel, ACLs, QoS.
Palo Alto Networks firewall experience including policy management, zones, NAT, App‑ID, and GlobalProtect.
Solid understanding of: WAN/MPLS/SD‑WAN architectures
Layer 2 and Layer 3 enterprise design
VPN (IPsec, SSL)
High availability (HA) concepts
Familiarity with wireless networking (Cisco, Aruba, or equivalent).
Strong documentation practices (Visio, diagrams, configs, runbooks).
Strong communication and teamwork abilities.
Ability to operate effectively in fast‑paced manufacturing/plant environments.
Organized, proactive, and capable of managing multiple priorities.
Self‑starter with strong problem‑solving skills.

Nice To Haves

Experience supporting networks in a manufacturing environment
Cisco ISE experience (authentication, authorization, policy sets, TACACS+).
Prisma SD‑WAN (formerly CloudGenix) deployment or administration experience.
VeloCloud SD‑WAN experience (profiles, business policies, overlays).
Manufacturing OT networking exposure (EtherNet/IP, industrial VLANs, segmented PCN/PMS environments).
Experience with DNS/DHCP/IPAM (Infoblox or similar).
Experience with network monitoring tools (PRTG, SolarWinds, Meraki Dashboard, etc.).
Certifications: CCNA/CCNP , PCNSE , or equivalent hands‑on knowledge.

Responsibilities

Handle day‑to‑day break/fix tickets for LAN/WAN, wireless, and firewall systems.
Troubleshoot routing, switching, and security issues across plant and enterprise networks.
Resolve network issues impacting production lines, sensors, OT devices, plant-floor apps, and IoT/Industry 4.0 platforms.
Monitor network health and help drive stability, performance, and resilience improvements.
Participate in on-call rotation for critical network incidents.
Support Palo Alto firewall upgrades, policy refinement, and migration tasks.
Assist with SD‑WAN transformation projects (Prisma SASE/Prisma SD‑WAN or VeloCloud).
Contribute to network modernization: switch refresh, cabling, redesign, VLAN segmentation.
Implement approved changes following established change management processes.
Collaborate with cross‑functional IT, OT, and vendor teams to ensure smooth deployments.