Senior Network & Systems Administrator – TS/SCI, SAP/DoD

System High Corporation; San Antonio (TX); On-site; USD 120,000 - 170,000; Full time

Job summary

System High Corporation seeks engineers with TS/SCI clearance to organize, install, and support DoD computer networks and SAP/SCI activities. You will design network models, manage COTS/GOTS products, and assist in risk and vulnerability assessments.

The role supports LAN/WAN, SIEM monitoring, and incident response, with emphasis on confidentiality, integrity, and availability across multiple classification levels. A bachelor’s degree or 4 years equivalent is required.

Qualifications

• 5-7 years related experience in IT, cybersecurity, or DoD environments.
• Bachelor’s degree in a related area or equivalent experience (4 years).
• Must meet DoD Directive 8570.01-M for IAT III within 6 months.

Responsibilities

• Lead IT operations team on day-to-day management and operations of networks.
• Assist security assessments of servers, devices, and security appliances.
• Develop SOPs and operational checklists for daily, weekly, and monthly maintenance.
• Configure and monitor SIEM tools and create alarms and reports.
• Support Special Access Programs (SAPs) and SCI/DoD activities.

Skills

Windows Server

Active Directory

Red Hat Enterprise Linux

Hyper-V/VMware

Networking & Security

Education

Bachelor’s degree or equivalent experience

Tools

LogRhythm

ACAS/Nessus/SCAP

WSUS

Lumension

Job description

System High Corporation seeks engineers with TS/SCI clearance to organize, install, and support DoD computer networks and SAP/SCI activities. You will design network models, manage COTS/GOTS products, and assist in risk and vulnerability assessments.

The role supports LAN/WAN, SIEM monitoring, and incident response, with emphasis on confidentiality, integrity, and availability across multiple classification levels. A bachelor’s degree or 4 years equivalent is required.