Senior System Administrator – TS/SCI, RMF & STIG Expert

Ares Enterprise; El Segundo (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

Ares Enterprise, LLC is seeking an Advanced System Administrator to support AFSCI intelligence operations. You will lead full-lifecycle systems administration across secure networks, servers, and workstations to ensure high availability and compliance.

Ideal candidates have TS/SCI clearance, strong VMware and Windows Server experience, and a track record of STIG enforcement and RMF artifact generation. This role requires on-site work in a sensitive environment.

Qualifications

• Experience securing and administering classified enterprise networks and infrastructure.

Responsibilities

• Maintain AFSCI servers and network equipment.
• Ensure 99.9% system availability.
• Apply patches and enforce STIG baselines.
• Support RMF artifacts for security accreditation.
• Provide Tier 2/3 support and incident resolution.
• Interface with government leads and vendor teams.
• Require TS/SCI clearance prior to start.

Skills

VMware

Windows Server

Active Directory

Network administration

Education

Bachelor's degree

Tools

VMware Horizon/VDI

eMASS

ACAS

Job description

Ares Enterprise, LLC is seeking an Advanced System Administrator to support AFSCI intelligence operations. You will lead full-lifecycle systems administration across secure networks, servers, and workstations to ensure high availability and compliance.

Ideal candidates have TS/SCI clearance, strong VMware and Windows Server experience, and a track record of STIG enforcement and RMF artifact generation. This role requires on-site work in a sensitive environment.