Lead DoD Systems Administrator – Infra & Security

CACI International; Maryland; On-site; USD 116,000 - 254,000; Full time

Job summary

CACI International leads in critical DoD IT infrastructure projects and supports intelligence and mission systems. The Systems Administrator Lead will guide daily operations of mixed Windows and Linux environments, managing AD, DNS/DHCP, and security controls across multiple enclaves.

The role emphasizes security compliance (STIGs, RMF, DoD requirements), incident response, and mentorship of junior staff while interfacing with government customers and cybersecurity teams.

Qualifications

• Master’s degree in Electrical Engineering, Electronic Engineering, Computer Engineering, Computer Science, or Information Systems.
• 10+ years of professional experience in systems administration.
• Strong experience administering Windows Server and/or Linux server environments.
• Experience with Active Directory, Group Policy, and enterprise identity management.

Responsibilities

• Lead design, implementation, and management of enterprise IT infrastructure solutions.
• Administer Windows/Linux server environments across security enclaves.
• Implement STIGs and secure baselines; maintain RMF and DoD security requirements.

Skills

Windows Server

Linux

Active Directory

Security STIGs

RMF

DoD

Education

Master’s degree in CS/EE/IS

Tools

VMware

Hyper-V

AWS/Azure

SCCM/Satellite

Job description

CACI International leads in critical DoD IT infrastructure projects and supports intelligence and mission systems. The Systems Administrator Lead will guide daily operations of mixed Windows and Linux environments, managing AD, DNS/DHCP, and security controls across multiple enclaves.

The role emphasizes security compliance (STIGs, RMF, DoD requirements), incident response, and mentorship of junior staff while interfacing with government customers and cybersecurity teams.