Systems Administrator Lead

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

Job Title: Systems Administrator Lead

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Local

* * *

The Opportunity:

Lead systems administration efforts for complex Department of Defense IT infrastructure supporting intelligence and mission systems. As a Systems Administrator Lead, you will:

• Administer and support daily operational requirements of computer network systems including workstations, file servers, web servers, and cloud-based infrastructure
• Lead the installation, configuration, and maintenance of hardware, software, and systems upgrades across multiple security domains
• Manage network accounts, network security, and web services for mission-critical systems
• Implement andmaintainnetwork security tools including firewalls, anti-virus, and intrusion detection services
• Monitor system configuration and performance to ensureoptimaloperation and availability
• Provide technical leadership and mentorship to junior systems administrators
• Interface with government customers, cybersecurity teams, and cross-functional technical staff

Responsibilities:

• Leadthe design, implementation, and management of enterprise-level IT infrastructure solutions
• AdministerWindows and Linux server environments across multiple security enclaves
• ManageActive Directory, Group Policy, DNS, DHCP, and enterprise identity management systems
• Implementand enforce Security Technical Implementation Guides (STIGs) and secure configuration baselines
• Maintainsystem security compliance with NIST 800-53, Risk Management Framework (RMF), and DoD security requirements
• Performsystem troubleshooting, root cause analysis, and incident response activities
• Developandmaintainsystem documentation including standard operating procedures, network diagrams, and configuration management databases
• Planand execute system patching, vulnerability remediation, and system hardening activities
• Managebackup and recovery operations to ensure data integrity andbusiness continuity
• Coordinatewith cybersecurity personnel to implement security controls and respond to security events
• Leadinfrastructure projects including system migrations, upgrades, and technology refresh initiatives
• Trainstaffonsoftware applications, systems access, and security best practices
• Automateroutine administrative tasks using PowerShell, Bash, Python, or other scripting languages
• Supportvirtualization platforms such as VMware, Hyper-V, or cloud infrastructure (AWS, Azure)
• Maintainsystemmonitoringand alerting tools to proactivelyidentifyand resolve issues

Qualifications:

Required:

• ActiveSecret security clearance (required)
• Master’sdegree in Electrical Engineering, Electronic Engineering, Computer Engineering, Computer Science, or Information Systems
• 10+ years of professional experience in systems administration
• Strongexperience administering Windows Server and/or Linux server environments
• Demonstratedexperience with Active Directory, Group Policy, and enterprise identity management
• Experiencewith network security tools including firewalls, intrusion detection systems, and anti-virus solutions
• Knowledgeof virtualization technologies (VMware, Hyper-V) and/or cloud platforms (AWS, Azure)
• Understandingof networking concepts including TCP/IP, DNS, DHCP, routing, and switching
• Experienceimplementing STIGs and security compliance requirements for DoD systems
• Strongtroubleshooting and problem-solving skills with ability to resolve complex technical issues
• Excellentcommunication skills with ability to explain technical concepts to non-technical stakeholders
• Demonstratedability to lead technical teams and mentor junior staff
• Compliancewith CyberWorkForce(CWF) directives, including any required certifications

Desired:

• Industrycertifications such as CompTIA Security+, Network+, Server+, Linux+, MCSA, MCSE, or RHCE
• Experiencewith DoD Risk Management Framework (RMF) and Authorization to Operate (ATO) processes
• Knowledgeof DISA Enterprise Mission Assurance Support Service (eMASS) and Assured Compliance Assessment Solution (ACAS/Nessus)
• Experiencewith containerization technologies (Docker, Kubernetes)
• Familiaritywith Infrastructure as Code (IaC) tools such as Ansible, Terraform, or Puppet
• Experiencewith scripting and automation using PowerShell, Python, Bash, or similar languages
• UnderstandingofDevSecOpsprinciples and CI/CD pipelines
• Experiencesupporting intelligence community systems orspecial accessprograms
• Knowledgeof Cross Domain Solutions (CDS) and multi-level security architectures
• Experiencewith enterprise backup solutions (Veeam, Commvault, etc.)
• Familiaritywith SIEM tools and log aggregation platforms (Splunk, ELK)
• Previousexperience supporting government program offices or defense contractors
• Experiencewith configuration management tools (SCCM, Satellite, etc.)

What You Can Expect:

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation’s most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$115,600 - 254,200 USD

CACI is anEqualOpportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any otherprotectedcharacteristic.