Network Engineer
Irvine, California
Position Overview
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.
Key Responsibilities
Operational Support ( 60%)
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.
Project Work ( 40%)
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.
Required Skills & Experience
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.
Experience supporting networks in a manufacturing environment (preferred but not required).
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).
Preferred Skills (Nice to Have)
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.
Soft Skills
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.
Network Engineer • Irvine, CA, United States
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