OT Administrator

General Information

Job Type: Regular, Non-Exempt

Starting Salary Range: $27.22 - $32.67/hour, DOQ

Closing Date: Open Until Filled

Shift/Workdays and

Hours:

Monday - Friday, 8:00AM - 5:00PM

Under the direction of the Network Coordinator and Treatment Plant Superintendents, the Operational Technology (OT) Administrator is responsible for the secure, reliable, and continuous operation of OT systems that support the Water and Wastewater facilities. This position administers, monitors, and troubleshoots OT networks and endpoints, while also assisting with the City’s virtual server environment and enterprise backup and recovery platforms.

• SCADA (Supervisory Control and Data Acquisition) and Control System Operations
  • Administer and support SCADA servers, HMIs, historian, alarm/notification services, and engineering workstations.
  • Maintain communications between SCADA system, PLCs/RTUs, and process networks, including Ether Net/IP, Modbus TCP/RTU via gateways, and serial-to-IP where applicable.
  • Monitor alarms, events, and system health; coordinate with operators on troubleshooting and operational impacts.
• PLC / RTU (Connectivity and Field Communications)
  • Support reliable connectivity to remote sites, including booster stations, lift stations, reservoirs, and wells, using fiber, licensed/unlicensed radio, cellular VPN, or leased circuits.
  • Troubleshoot network and communication path issues impacting telemetry, control, and time synchronization.
  • Coordinate with instrumentation/electrical staff and integrators for I/O mapping, addressing, and communications validation without inadvertently changing process logic.
• OT Cybersecurity, Patch Management, and Change Control
  • Implement OT-specific hardening (account management, least privilege, service control, application allowlisting where possible).
  • Manage anti-malware/EDR deployment strategies appropriate for OT environments, including testing, compatibility review, and maintenance window coordination.
  • Maintain OT vulnerability management practices, including asset inventory, risk-based patching, compensating controls when patching is not feasible.
  • Plan and execute OT patching and upgrades in coordination with operations, including maintenance windows, testing, and rollback planning.
  • Maintain firmware/software lifecycle plans for SCADA components, hypervisors, and network equipment.
  • Use controlled change management processes for OT changes and document approvals, testing, and outcomes.
• Compliance, Documentation, and Audit Readiness
  • Maintain current asset inventories for hardware and software, network diagrams, backups/restore runbooks, and standard operating procedures.
  • Support cybersecurity assessments aligned with sector practices (e.g., NIST-based controls and internal City policies).
  • Track and maintain records related to user accounts, access reviews, and system/configuration backups.
• Backup, Recovery, and Continuity of Operations
  • Manage backup systems for OT servers, workstations, and critical configurations, including SCADA databases, historian data, alarm configurations, PLC programs where policy allows, and firewall/switch configurations. Operate and monitor backup and replication jobs for supported systems and infrastructure. Perform routine restore testing and assist with disaster recovery and continuity planning for key services.
  • Maintain offline or immutable backup protections, ensure backup infrastructure access is restricted, and monitor backups for timely remediation of failures.
• Virtual Server Platform Operations (IT)
  • Provision and decommission virtual machines.
  • Manage compute, storage, network resources supporting the virtual server environment.
  • Patch and maintain host firmware, drivers, hypervisors, and management applications within approved maintenance windows.
  • Apply secure baselines and monitor performance and availability; troubleshoot and remediate issues.

• Associates Degree in information technology, computer networking/network engineering, management information systems (MIS), computer science, cybersecurity, or a related field.
• 1-3 years of experience with security applications, programming, monitoring and incident…