Operational Technology Specialist - Network II, III

Operational Technology Specialist - Network (I, II, III)

About Ameren Missouri Ameren Missouri has been providing electric and gas service for more than 100 years, and our electric rates are among the lowest in the nation. Our mission is to power the quality of life for our 1.2 million electric and 132,000 natural gas customers in central and eastern Missouri. Our service area covers 64 counties and more than 500 communities including the greater St.

Louis area.

• Medical coverage on date of hire
• 100% employer paid cash balance pension plan
• 401(k) with company match fully vested on date of hire
• Minimum of 15 days paid vacation and 12 paid holidays
• Paid parental leave and family caregiver leave

The Operational Technology (OT) Specialist will be responsible for providing technical and cybersecurity services for Ameren Missouri’s Generation fleet. This position will provide operational support of the hardware and software infrastructure that governs the operation and control of Ameren’s Energy Centers.

• Assist Energy Center staff with network maintenance and upkeep. Implement and utilize network management tools to monitor activity on the control system networks.
• Monitor operating system and software patching, ensuring security patches are installed. Manage antivirus and whitelisting applications to prevent malicious software from being deployed on critical control systems.
• Respond to outages or unusual activity to ensure continuous operation of the energy center generating assets. Diagnose connectivity issues and take action to restore normal operation. Respond to emergency call outs as required.
• Maintain ISC firewalls and network switch configurations. Maintain network segmentation and limit inbound access on critical control system networks. Implement access controls (firewall rules, VLANs, shutdown unused ports) to restrict unintended access.
• Maintain VSphere virtual environments on the Industrial Control System networks. Provision and deploy virtual machines as required by system owners. Monitor resource utilization and plan for upgrades or expansions as required.
• Develop and maintain system restoration processes that allow for timely recovery from a catastrophic event. Schedule and maintain regular backups of critical systems and configuration files.
• Provide technical guidance and design support for capital projects involving the addition, modification, or removal of networked devices. Work with the Project Managers and Design Engineers to develop a network design that accommodates the operation needs of the energy center, complies with all regulatory requirements, and maintains a robust security perimeter.
• Follow new developments and trends in the industry to maintain professional expertise.

Associate's Degree in Computer Science, Network Technology, Management Information Systems, or a computer‑related degree from an accredited college or university; or 60 credit hours toward completion of a Bachelor of Science Degree in Computer Science, Management Information Systems, Engineering, or a computer‑related degree. In lieu of a degree, one or more years of experience required in any of the following areas:
Windows, Windows Server, Cybersecurity, LAN/WAN network development or monitoring, virtualization technologies.

Bachelor’s Degree in Computer Science, Network Technology, Management Information Systems, or an equivalent computer‑related degree from an accredited college or university and two or more years of directly relevant experience required. In lieu of a degree, a total of four or more years of directly relevant experience may be considered. Directly relevant experience includes LAN/WAN network development or monitoring, Windows and Windows Server, Cybersecurity, virtualization technologies, IT/digital generation facility support, Software/hardware Asset Management, etc.

Bachelor’s Degree in Computer Science, Network Technology, Management Information Systems, or an equivalent computer‑related degree…