Senior Cyber Systems Lead (TS/SCI)

CACI International Inc; Fort Bragg (NC); On-site; USD 72,000 - 150,000; Full time

Job summary

CACI International Inc is seeking a Cyber System Administrator, Senior, to support mission-critical DoD cyber operations. The role involves managing classified and unclassified systems, user access, patching, and continuous monitoring in a TS/SCI environment.

Responsibilities include system hardening, incident response coordination, and documentation across Windows and Linux platforms, with virtualization experience and DoD framework adherence. Up to 25% travel may apply.

Qualifications

• Requires TS/SCI clearance and a Bachelor's degree in a technical field.
• Minimum 5 years executing cyber system administration for DoD/US government environments.
• DoD 8570.01-M IAT Level II or III certifications per security requirements.
• Experience administering Windows Server and Linux operating systems; proficiency with AD and GPO.
• Knowledge of virtualization (VMware, Hyper-V) and network services (TCP/IP, DNS, DHCP, VPN).
• Experience with RMF/ATO processes and DoD cybersecurity controls.

Responsibilities

• Administers, configures, and maintains classified and unclassified information systems supporting operational requirements.
• Manages user accounts, roles, permissions, and access controls per security policies and least privilege.
• Monitors system performance, availability, and security using approved tools; resolves issues.
• Implements system hardening, patch management, and baselines for cybersecurity compliance.
• Supports accreditation, authorization, and continuous monitoring per DoD requirements.
• Troubleshoots hardware, software, and network issues to ensure reliability.
• Maintains system documentation and SOPs.
• Coordinates with cybersecurity, network, and operations teams for incident response and risk mitigation.
• Performs data backup, recovery, and continuity procedures.
• Provides support and guidance to users on system capabilities and security practices.

Skills

TS/SCI clearance

Windows Server

Linux operating systems

Active Directory

Group Policy

PowerShell

Python

Bash

VMware

Hyper-V

TCP/IP

DNS

DHCP

VPN

firewall configurations

Education

Bachelor's degree in computer science, Information Technology, Cybersecurity, or related technical field

Tools

DoD 8570.01-M certifications (Security+ CE, CySA+, GICSP, GSEC, SSCP)

MCSA or Linux+ / RHCSA

VMware

Hyper-V

Job description

CACI International Inc is seeking a Cyber System Administrator, Senior, to support mission-critical DoD cyber operations. The role involves managing classified and unclassified systems, user access, patching, and continuous monitoring in a TS/SCI environment.

Responsibilities include system hardening, incident response coordination, and documentation across Windows and Linux platforms, with virtualization experience and DoD framework adherence. Up to 25% travel may apply.