Senior System Administrator – Control Systems (L3)

O2 Technologies,Inc; Dallas (TX); On-site; USD 110,000 - 150,000; Full time

Job summary

O2 Technologies,Inc is seeking an experienced IT/OT Infrastructure Manager to lead CIP compliance, DR planning, and 24/7 system availability for critical operations.

You will manage server lifecycles, VDI, and data center infrastructure while coordinating with application, network, and security teams. A strong background in Windows/Linux servers and virtualization is required.

Qualifications

• Bachelor's degree in a technical field is required; master's preferred.
• Strong background in Windows and Linux server administration.
• Experience with OT/industrial environments and CIP compliance is a plus.
• Proven ability to manage data center infrastructure and backups.
• Experience in vendor coordination and on-call support.

Responsibilities

• Oversee Control Systems Operations Management and CIP compliance.
• Lead Business Continuity & Disaster Recovery planning and execution.
• Ensure 24/7 system availability across data center assets.
• Manage server lifecycle: provisioning, maintenance, decommissioning.
• Enforce security baseline compliance and conduct audits.
• Monitor performance and conduct trend analysis.
• Coordinate with vendors and OEM hardware teams.
• Participate in cross-functional collaboration with application, network, and security teams.
• Manage Data Center physical infrastructure and VDI environment.
• Develop and execute backup and recovery strategies.

Skills

Windows Server Admin

Linux (RHEL)

Active Directory / DNS / DHCP

VMware / Hyper-V

Nutanix Prism Central

PowerShell scripting

SCCM

VDI management

Education

Bachelor's Degree in CS/IT/EE/SE

Master's Degree in CS/EE/IS/Cybersecurity

Tools

Nutanix Hypervisor

Dell/HP OEM hardware

Veeam/Commvault backups

Red Hat Satellite

VDI tools

Job description

• NERC Critical Infrastructure Protection (CIP) Compliance
• Business Continuity & Disaster Recovery Planning
• 24/7 System Availability Management
• Security Baseline Compliance and Auditing
• Performance Monitoring & Trend Analysis
• Vendor & OEM Hardware Coordination
• On-call Tier-3 Support Rotation
• Cross-functional Collaboration (Application, Network, Security Teams)
• Data Center Physical Infrastructure Management
• Backup and Recovery Strategy
• Virtual Desktop Infrastructure (VDI) Management

Key Responsibilities & Skills

• Control Systems Operations Management
• Utility Industry Regulatory Compliance
• NERC Critical Infrastructure Protection (CIP) Compliance
• Business Continuity & Disaster Recovery Planning
• 24/7 System Availability Management
• Server Lifecycle Management (Provisioning, Maintenance, Decommissioning)
• Security Baseline Compliance and Auditing
• Performance Monitoring & Trend Analysis
• Vendor & OEM Hardware Coordination
• On-call Tier-3 Support Rotation
• Cross-functional Collaboration (Application, Network, Security Teams)
• Data Center Physical Infrastructure Management
• Backup and Recovery Strategy
• Virtual Desktop Infrastructure (VDI) Management

Technical Skills

• Windows Server 2012/2016/2019/2022/2025
• Linux RHEL 7/8/9
• Active Directory / DNS / DHCP / IIS / ADFS / Group Policies
• Nutanix Prism Central / Nutanix Hypervisor
• VMware vSphere / vRealize Suite / vRA / vRO / Horizon View
• PowerShell scripting
• Microsoft SCCM
• Red Hat Satellite
• RAID management
• Backup solutions (e.g., Veeam, CommVault)
• Dell / HP OEM hardware
• Hyper-V virtualization
• VDI environment management
• Scripting & Automation

Education

Bachelor's Degree in Computer Science, Information Technology, Electrical Engineering, Computer Engineering, Systems Engineering. Preferred: Master's in Computer Science, Master's in Electrical Engineering, Master's in Information Systems, Master's in Cybersecurity.

Industry Experience

• Utility / Power Industry
• Energy Production
• Operations Technology (OT)
• Control Systems
• Data Center / Server Infrastructure
• Virtualization & Cloud Infrastructure

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