Senior OT/SCADA Systems Administrator

Chugach Government Solutions, LLC; Portsmouth (VA); On-site; USD 110,000 - 160,000; Full time

Job summary

Chugach Government Solutions in Portsmouth, VA seeks an Industrial Control Systems (ICS)/SCADA/OT System Administrator to operate a converged OT/IT ecosystem. The role involves advanced system administration, multi-vendor HCI maintenance, enterprise identity management, and specialized threat monitoring at a NIWC facility.

Travel is required; salary range is $110k–$160k per year. Responsibilities include administering NICs, Windows/Linux, PKI, AD, and RMF/ISCP documentation, plus DR planning and

Qualifications

• Minimum of 5+ years of production experience in systems administration, with 3+ years in a DoD OT environment.
• Must be a US citizen and able to obtain and maintain a Secret clearance.
• Experience with Nutanix AOS/AHV and Cisco HyperFlex for disaster recovery.
• Proficient in Windows, Linux, and Unix; scripting in PowerShell and Python.
• Familiar with DISA STIGs, ACAS/Tenable, and RMF/A&A documentation.

Responsibilities

• Administer Nutanix AOS/AHV and Cisco HyperFlex clusters.
• Manage storage pools and virtual networks for SCADA environments.
• Lead DR orchestration and data protection strategies.
• Develop SOPs for installation, operation and hardening.
• Maintain AD domains and GPOs for OT workstations.
• Apply DISA STIGs across Windows, Linux, and network devices.
• Triage security alerts using Dragos Platform.

Skills

Ladder Logic

Structured Text

PowerShell

Python

Unix/Linux

Windows

Disaster Recovery

Tools

Nutanix AOS/AHV

Cisco HyperFlex

Active Directory

PKI / CA

ACAS/Tenable

SQL Server

Dragos Platform

SolarWinds

Job description

Chugach Government Solutions in Portsmouth, VA seeks an Industrial Control Systems (ICS)/SCADA/OT System Administrator to operate a converged OT/IT ecosystem. The role involves advanced system administration, multi-vendor HCI maintenance, enterprise identity management, and specialized threat monitoring at a NIWC facility.

Travel is required; salary range is $110k–$160k per year. Responsibilities include administering NICs, Windows/Linux, PKI, AD, and RMF/ISCP documentation, plus DR planning and