Systems Administrator

CACI International • Oklahoma City, OK

31d • Onsite

About The Position

CACI is looking for an experienced and technically proficient Systems Administrator to join our team supporting the Department of the Air Force (DAF) Enterprise IT as a Service (EITaaS) program. This is an opportunity to take ownership of critical on-premise infrastructure on both NIPR and SIPR networks at our Oklahoma City location, driving meaningful impact on enterprise-scale systems that support our nation's security. As part of the EITaaS program, you will be a key contributor delivering cutting-edge IT services and solutions. You will serve as a subject matter expert for the Enterprise Service Desk (ESD), mentoring junior staff and leading technical initiatives across the infrastructure team. As a Systems Administrator, you will be a core member of our infrastructure team, independently managing complex systems and leading technical projects. You will evaluate new technologies, drive modernization efforts, and design scalable, resilient, and secure systems. This role offers the opportunity to deepen your technical expertise while expanding your leadership and architectural skills.

Requirements

• Must be a U.S. Citizen with an active DoD Secret clearance (or higher).
• DoD 8570 Certification: Active Security+ CE certification (or equivalent IAT Level II/III certification) required.
• 10+ Years of relevant experience (bachelor’s degree in applicable field may be substituted for 5 years of experience).
• Technical Experience: 3–5 years of hands-on experience administering Windows-based enterprise environments, including Active Directory, virtualization platforms, and network services.
• Proven Expertise: Demonstrated ability to independently manage and troubleshoot complex enterprise IT infrastructure with minimal supervision.
• Hands-on experience with automated patching solutions (e.g., WSUS, SCCM, MECM).
• Proficiency in scripting and automation using PowerShell, Python, or Bash.
• Working knowledge of ITSM frameworks (ITILv4) and tools such as ServiceNow.
• Experience with cloud environments (AWS, Azure Government) and hybrid-cloud integration.
• Strong understanding of networking, routing, and security concepts in enterprise environments.

Responsibilities

• Infrastructure Ownership: Independently implement, maintain, and optimize servers, storage, and networking hardware; serve as a technical lead on infrastructure projects.
• Core Services Administration: Be knowledgeable of enterprise services including Active Directory, Group Policy, DNS, and DHCP; troubleshooting complex issues and drive improvements.
• Cybersecurity Leadership: Lead implementation of security controls, conduct system vulnerability assessments, enforce STIG compliance, and serve as a liaison with cybersecurity teams.
• Technology & Modernization: Evaluate, recommend, and lead adoption of new technologies to support system enhancements and lifecycle management.
• Documentation & Process Ownership: Develop and maintain comprehensive system documentation, architecture diagrams, and Standard Operating Procedures (SOPs), drive process standardization across the team.
• Advanced Problem Solving: Serve as a technical escalation point for complex system issues; lead root cause analysis and implement long-term resolutions.

Benefits

• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level