IT/OT Network Systems Administrator– Renewable Energy Remote Operations Center

Clean Energy Services•Houston, TX

6d•Onsite

About The Position

The IT/OT Network Systems Administrator is responsible for the design, implementation, security, and ongoing support of IT and OT networking infrastructure supporting CES’s 24/7 Renewable Energy Remote Operations Center (ROC). This role ensures secure, reliable connectivity across enterprise IT and operational technology (OT) environments while supporting NERC CIP-aligned cybersecurity controls.

Requirements

3–5 years of IT/OT networking and systems administration experience
Strong IP networking, DNS, routing, NAT, and VPN skills
Palo Alto and Cisco networking experience
Windows Server and Linux administration experience
Familiarity with NERC CIP cybersecurity requirements
Experience supporting 24/7 operational environments

Nice To Haves

Renewable energy, utility, or industrial experience
ROC or NOC environment exposure
SCADA or OT networking experience
Cybersecurity compliance or audit support experience
Experience with SSO platforms such as Okta

Responsibilities

Design, configure, and maintain secure IT/OT network environments
Manage IP addressing, DNS, routing, NAT, and network segmentation
Configure and support IPSec site-to-site and remote access VPNs
Administer Cisco switches and Palo Alto firewalls (GlobalProtect)
Support SCADA, EMS, and OT networks including Ignition, DNP3, and OPC-UA
Debug VPN performance issues including latency, packet loss, and MTU issues
Build monitoring dashboards and alerting systems (Grafana/Prometheus)
Administer Windows Server and Linux systems
Support vSphere virtual environments
Maintain network documentation and data center standards
Support ROC operations, telecom systems, and call recording
Collaborate with vendors and manage firewall and VPN access
Use GitHub for configuration management and version control
Monitor and collect near real-time utilization data for ROC backhaul Internet connections; analyze bandwidth usage and recommend ISP bandwidth increases as needed
Apply Critical Infrastructure Protection (CIP) principles to determine and authorize appropriate user access to site resources, including SCADA and OT control systems
Design, configure, and support Single Sign-On (SSO) solutions using Okta or similar identity providers