Senior System Administrator, Control Systems & OT

CTC; Dallas (TX); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Competitive compensation

Job summary

CTC seeks a senior systems administrator with extensive experience in Windows and Linux servers, virtualization (Nutanix/VMware), and control system environments. The role requires rapid diagnostics, risk mitigation, and 24/7 operation support for critical systems.

Ideal candidates will demonstrate deep expertise in Active Directory, DNS/DHCP, and security compliance, with hands-on scripting and automation skills to improve reliability and efficiency across OCI/OT environments.

Qualifications

• 8+ years of experience in Windows, Linux, and virtualization environments.
• Experience with control system environments and 24/7 operation
• Knowledge of NERC CIP and information security basics.

Responsibilities

• Manage and administer Windows and Linux servers in a global environment.
• Maintain Nutanix/VMware VDI and virtualization infrastructure.
• Ensure security baseline compliance and patch management.
• Provide on-call engineering support and incident resolution.

Skills

Windows Server administration

Linux Server administration

Nutanix Prism Central

VMware vSphere

vRealize Suite

AD/DNS/DHCP

Security compliance

Tools

Nutanix Prism Central

VMware vSphere

vRealize Suite

Horizon View

Red Hat Satellite

Microsoft SCCM

Job description

CTC seeks a senior systems administrator with extensive experience in Windows and Linux servers, virtualization (Nutanix/VMware), and control system environments. The role requires rapid diagnostics, risk mitigation, and 24/7 operation support for critical systems.

Ideal candidates will demonstrate deep expertise in Active Directory, DNS/DHCP, and security compliance, with hands-on scripting and automation skills to improve reliability and efficiency across OCI/OT environments.