Senior Control Systems Administrator

• Administer and maintain control system applications, servers, and supporting infrastructure
• Coordinate application upgrades, patches, configuration changes, and system maintenance
• Develop and execute test plans for system updates before production implementation
• Assess change impacts, identify dependencies and risks, and communicate findings to stakeholders
• Coordinate maintenance windows and outages to minimize operational disruption
• Monitor system health, performance, capacity, and security compliance while addressing anomalies
• Maintain compliance with applicable cybersecurity policies, regulatory requirements, and NERC CIP standards
• Provide Tier 3 technical support, troubleshoot complex issues, and coordinate resolution with vendors
• Support system recovery, business continuity, fault tolerance, and disaster recovery activities
• Collaborate with infrastructure, network, cybersecurity, application, and operations teams
• Maintain technical documentation, support tickets, compliance reports, and remediation records
• Contribute to reliable 24/7 operations through proactive maintenance and on-call support

The ideal candidate has 8+ years of experience supporting control systems and underlying infrastructure, with expertise in Windows and Linux administration, virtualization, security, and disaster recovery. This individual is proactive, skilled at troubleshooting complex issues and managing risk, and effective at collaborating across teams to maintain secure, reliable, and highly available environments. Experience in utility or industrial control systems is preferred., * 8+ years of experience in system administration, Control Systems, or Operational Technology environments

• Hands-on experience supporting OT or control system applications and infrastructure
• Knowledge of Windows Server and Workstation, Linux/Red Hat Enterprise Linux, Active Directory, and data networking
• Experience with virtualization platforms such as VMware, Hyper-V, or Nutanix
• Understanding of utility communication protocols, including ICCP, DNP3, and OPC
• Experience with system patching, upgrades, configuration management, troubleshooting, and security remediation
• Knowledge of NERC Critical Infrastructure Protection (CIP) standards and security compliance practices
• Experience supporting highly available systems, fault tolerance, business continuity, and disaster recovery
• Ability to configure and troubleshoot SSL/TLS encrypted communications between applications and external systems
• Scripting skills in Python, PowerShell, Bash/Shell, and batch, with familiarity in JSON, XML, Git, and CALC development
• Understanding of data center infrastructure, server hardware, backups, and remote connectivity tools
• Strong vendor management, problem-solving, and cross-functional collaboration skills
• Ability to participate in an on-call support rotation