Network Systems Admin

Network Systems AdministratorThe client is seeking an experienced Network Systems Administrator to support the design, implementation, and maintenance of IT/OT network infrastructure for a new demonstration facility, serving as a key technical resource for hands on implementation, commissioning, and escalation support.Job SummaryDesign, implement, and maintain network infrastructure including LANs, WANs, VPNs, and wireless networks across IT and OT environmentsConfigure and troubleshoot network devices including routers, switches, firewalls, and load balancers, with a focus on Palo Alto, Cisco, Siemens, and Meraki platformsDevelop and support OT network segmentation and DMZ design, including connectivity for SCADA, Ignition adjacent systems, and PLC controllersManage and administer server infrastructure including physical servers, virtual machines, and storage systems, supporting Proxmox VM migration and Scale Computing/Windows Server environmentsMonitor network performance and security, identifying and resolving issues promptly, including extended hours or occasional after hours escalationsReview existing OT documentation and perform hands on implementation to support commissioning activities at the demonstration facilityCollaborate with cross functional teams to plan and execute IT/OT projects, and document network configurations, procedures, and troubleshooting stepsMinimum Requirements7 years of progressive experience in network administration with demonstrated IT/OT networking expertiseHands on experience with Palo Alto firewalls, including configuration, troubleshooting, and OT segmentation/DMZ designProficiency with Cisco switching and Meraki networking and wireless solutionsExperience with Siemens networking switches in a manufacturing, plant, or operational technology environmentSolid understanding of OT network concepts including PLC controllers, plant networks, and OT vs traditional IT network architectureStrong knowledge of networking protocols and technologies including TCP/IP, DNS, DHCP, VLANs, routing, and switchingPreferred QualificationsExperience with virtualization platforms such as Proxmox, VMware, or Hyper-V, including VM migrationFamiliarity with Scale Computing or Windows Server infrastructure administrationExperience supporting SCADA systems or Ignition adjacent connectivity in an OT environmentKnowledge of secure remote access solutions in industrial or manufacturing environmentsScripting or automation experience using Python, PowerShell, or similar toolsRelevant certifications such as CCNP, CompTIA Network, Security, or equivalent