Senior OT Network Engineer

We are looking for an experienced Senior OT Network Engineer to join our System Solution team. This individual will play a key hands‑on role in designing, implementing, securing, and supporting network infrastructure across industrial and manufacturing environments.

The ideal candidate should have strong experience working with Operational Technology (OT) networks, plant‑floor systems, and enterprise network infrastructure. This role will work closely with IT, engineering, automation, production, maintenance, and operations teams to ensure that network solutions are secure, reliable, highly available, and implemented with minimal impact on manufacturing operations.

This is an onsite role and requires someone who is comfortable working directly in a plant or manufacturing environment.

• Design, deploy, and support OT and industrial network infrastructure.
• Serve as a primary onsite network engineering resource for OT‑related projects and initiatives.
• Develop secure and reliable network solutions for manufacturing and plant environments.
• Support connectivity for plant‑floor equipment, automation systems, controls, and edge‑connected devices.
• Participate in network deployments, migrations, cutovers, maintenance activities, and operational readiness planning.
• Ensure all network changes and implementations are completed with minimal disruption to production environments.

• Design and implement secure network architectures for OT and enterprise environments.
• Implement network segmentation, VLANs, access controls, and secure connectivity between IT and OT networks.
• Support and maintain Industrial DMZ (IDMZ) architecture.
• Configure and troubleshoot firewalls and other network security components.
• Apply high‑availability, redundancy, and resiliency principles to critical network infrastructure.
• Contribute to network architecture standards, technical documentation, deployment procedures, and implementation guidelines.
• Ensure OT cybersecurity requirements are incorporated into network design and deployment activities.

• Provide advanced technical support for complex OT and enterprise network issues.
• Troubleshoot problems related to routing, switching, VLANs, wireless networks, firewalls, connectivity, and network performance.
• Monitor network performance and identify potential reliability or capacity concerns before they impact operations.
• Work with internal IT teams, plant personnel, engineering teams, and external vendors to resolve technical issues.
• Support planned maintenance windows, network upgrades, and cutover activities.
• Provide after‑hours support when required for critical production or network activities.

• Act as a technical bridge between enterprise IT and plant engineering teams.
• Work closely with production, maintenance, automation, engineering, and operations teams to understand business and manufacturing requirements.
• Translate operational requirements into secure and scalable network solutions.
• Provide technical guidance and support to local IT and operational teams.
• Mentor and train support personnel on OT networking standards, troubleshooting techniques, and best practices.
• Take ownership of assigned projects and technical initiatives and drive them through successful completion.

• Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field. Equivalent professional experience will also be considered.
• 10+ years of progressive experience in Network Engineering.
• Strong hands‑on experience supporting OT, industrial, manufacturing, or plant‑floor network environments.
• Strong understanding of enterprise LAN/WAN architecture and network security.

• Routing and Switching
• VLANs
• Firewalls
• Secure Connectivity
• Network Redundancy and High Availability
• LAN/WAN Networks
• Wireless Networking
• Network Monitoring and Troubleshooting
• Experience supporting production‑critical or high‑availability network environments.
• Experience with network deployments, upgrades, maintenance windows,…