Listing evidence and provenance
- Source
- Greenhouse View original listing
- Freshness
- Open in the current public read path; this is not an employer guarantee.Last observed October 5, 2026
- Classification
- Modern power-system classification not yet published for this listing.Legacy source industry field: Energy Management
- Pay provenance
- Estimated benchmark; not employer-provided
Job Description
TCP/IP, VLANs, Routing, Switching, Subnetting, NAT
Key Responsibilities
- Design, implement, and maintain OT network architectures, including LAN/WAN, wireless, and industrial network segments.
- Configure, manage, and troubleshoot Palo Alto next-generation firewalls to enforce network security policy and segmentation between OT zones.
- Deploy and maintain Moxa industrial switches and other ruggedized networking hardware in OT environments.
- Diagnose and resolve complex network issues across routing, switching, and security layers, minimizing downtime in production and industrial settings.
- Design and maintain VLAN structures, subnetting schemes, and IP addressing plans across OT networks.
- Configure and manage NAT, VPN tunnels, and site-to-site/remote access connectivity.
- Implement and maintain High Availability (HA) network designs to ensure resilience of critical infrastructure.
- Apply network security best practices, including segmentation, access control, monitoring, and hardening of OT networks.
- Collaborate with controls, automation, and cybersecurity teams to support integration of PLCs, SCADA systems, and industrial PCs onto the network.
- Document network designs, standard operating procedures, and change management records.
Requirements
- Expert-level knowledge of network topologies and structured troubleshooting methodology.
- Strong hands-on proficiency with TCP/IP, VLANs, routing, switching, subnetting, and NAT.
- Demonstrated experience designing and supporting site-to-site and remote access VPNs.
- Solid understanding of network security principles and High Availability design.
- Experience working within Operational Technology (OT) environments and an understanding of IT/OT network segmentation.
- Bachelor's degree in a related field, or equivalent professional experience.
- Hands-on expertise with Palo Alto firewalls (policy configuration, App-ID, segmentation, VPN, and monitoring).
- Experience deploying and managing Moxa industrial switches.
- Familiarity with Siemens PLCs and industrial control system architectures.
- Experience with SEL (Schweitzer Engineering Laboratories) protective relay and communication devices.
- Experience networking and supporting Industrial PCs in production/OT environments.
- Familiarity with Ignition SCADA platform and its network/architecture requirements.
- Proficiency administering both Windows and Linux environments.
- Relevant certifications such as PCNSE, CCNA/CCNP, or similar are a plus.
Ready to Apply?
Apply directly on ON.energy's site
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