Systems Administrator II - DoD RMF/Secret Clearance

AMERICAN SYSTEMS; California; On-site; USD 120,000 - 145,000; Full time

Job summary

AMERICAN SYSTEMS is a federal government contractor providing strategic IT, assessment, program support, engineering and training solutions. The Systems Administrator II will manage Windows and Linux servers, perform hardening, patching, and monitoring to sustain secure operations and RMF compliance.

The role requires 3–5 years of hands-on server experience, an active DoD 8570/8140 IAT Level II certification, and ability to work independently in a mission-focused IT environment.

Qualifications

• Minimum of 3 to 5 years of experience in systems administration.
• Hands-on experience supporting server environments and enterprise infrastructure.
• Current DoD 8570/8140 IAT Level II certification (Security+ CE, CySA+, SSCP, CND, GSEC, GICSP, or equivalent).
• Strong knowledge of server administration, OS configuration, patching, and hardening in regulated environments.
• Experience with Microsoft infrastructure services such as Active Directory, DNS, DHCP, and Group Policy.

Responsibilities

• Administer and maintain server systems and infrastructure for availability and performance.
• Deploy, configure, and initial software setup based on baselines.
• Patch, harden, and update operating systems and applications per security baselines.
• Install and manage approved software and perform system updates.
• Monitor system health and optimize resources for reliability.
• Troubleshoot issues and respond to incidents to ensure continuity of operations.
• Document configurations, procedures, changes, and RMF/compliance updates.
• Support cybersecurity and compliance activities including vulnerability remediation and RMF documentation.
• Produce system status and patch reporting; collaborate with network and security teams.

Skills

Server administration

Vulnerability remediation

Documentation

Independent work

Communication

Education

IAT Level II certification (Security+ CE, CySA+, SSCP, GSEC)

Tools

Active Directory

DNS

DHCP

Group Policy

Job description

AMERICAN SYSTEMS is a federal government contractor providing strategic IT, assessment, program support, engineering and training solutions. The Systems Administrator II will manage Windows and Linux servers, perform hardening, patching, and monitoring to sustain secure operations and RMF compliance.

The role requires 3–5 years of hands-on server experience, an active DoD 8570/8140 IAT Level II certification, and ability to work independently in a mission-focused IT environment.