System Administrator (Control Systems) – L3

Job Title: System Administrator (Control Systems) – L3

Location: Dallas/Fort Worth, TX (Hybrid – 3 days onsite)

Duration: 12-Month SOW

Positions: 2

Work Authorization: USC, GC, GC-EAD, H4

Interview: 1 Virtual + 1 Onsite

Important: Local DFW candidates only. Candidates must have a residential address within the Dallas/Fort Worth metroplex. Relocation and non-local candidates are not accepted.

Job Summary

Client is seeking an experienced L3 System Administrator to support and maintain critical Control Systems and Operational Technology (OT) infrastructure. The role involves administration, troubleshooting, patching, security compliance, disaster recovery, and Tier-3 engineering support for highly available utility control systems operating 24/7.

Must-Have Skills

• 8+ years of relevant system administration experience.
• Control Systems / OT application administration and troubleshooting.
• Windows Server (2012–2025) and Linux/RHEL (7–9) administration.
• Active Directory, data networks, and utility communication protocols: ICCP, DNP3, and OPC.
• Virtualization: VMware, Hyper-V, and/or Nutanix.
• NERC CIP compliance, security baselines, patching, and audit remediation.
• PowerShell, Python, Bash/Shell scripting, JSON/XML, and Git.
• High availability, fault tolerance, backup, business continuity, and disaster recovery.
• Vendor management, infrastructure upgrades, and cross-team coordination.

Preferred Background

Candidates from electric utilities, energy, oil and gas, heavy automobile manufacturing, or large consulting firms supporting Fortune 500 clients.

Additional Requirements

• Hybrid schedule: 3 days onsite.
• Approximately 10% travel within DFW.
• Must participate in an on-call rotation when introduced.
• Strong troubleshooting, communication, and stakeholder management skills.