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# Network Administrator (Senior)

- **Company:** CACI International Inc.
- **Location:** Ashburn, VA, United States
- **Experience:** Expert
- **Salary:** $103,800 - $218,100
- **Contract:** Permanent contract
- **Skills:** Adobe InDesign, Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Application Firewall, Microsoft Azure, CompTIA Security+, Cyber Security, Information Systems, Data Centers, Disaster Recovery, Information Technology Operations, Networking Hardware, Network Security, Network Architecture, Network Connections, Network Segmentation, Network Administration, Firewall Policy Management, Server Administration, Load Balancing, Computer Network Operations, Firewalls (Computer Science), SC Clearance, Information Technology, SDN Network, Palo Alto Networks, Api Gateway, Oracle Cloud Infrastructure, Big Ip, Cisco, Network Optimization
- **Published:** November 13, 2026
- **Apply:** https://www.careerbuilder.com/job-details/network-administrator-senior-ashburn-va--c5add04f-5884-4599-ba93-8acf45494250

## About the Role

Network Administration/Management, Network Administration/Management, Information Technology & Information Systems, Willing to Travel, IT Service Management (ITSM), Operational Support, Software Administration, Technical Support, Computer Security, Application Programming Interface (API), Required:

 * Bachelor's degree + 8 years of experience in related fields, such as network administration, network engineering, infrastructure administration, firewall management, or IT operations; equivalencies considered.
 * Active Secret Clearance
 * Proven experience with next-generation firewalls (Palo Alto, F5 BIG-IP, API Gateway) and advanced network security implementations
 * Demonstrated expertise in Layer 2/3 networking, fiber optic cabling, network infrastructure design, and disaster recovery configurations
 * Strong knowledge of bandwidth management, capacity planning, and coordination with government network providers
 * Excellent leadership abilities with proven experience planning and leading technical network initiatives, functioning as a subject matter expert, and supervising network operations teams

Desired:

 * Prior experience supporting federal agencies, especially the Department of State
 * Experience with Cisco Umbrella, Illumio, AWS, Azure, or Oracle Cloud networking.
 * Professional certifications such as Cisco CCNP, Palo Alto Networks Certified Network Security Engineer (PCNSE), F5 Certified Administrator, or CompTIA Security+
 * Knowledge of ITIL frameworks, change management processes, and experience supporting mission-critical network infrastructure in secure environments
 * What You Can Expect:

A culture of integrity.

## Description

CACI is seeking a Senior Network Administrator for the Global Mission Operations Support (GMOS) contract, supporting the Department of State. This role offers a unique opportunity to enhance national security through advanced IT solutions. You will collaborate with experienced professionals in an innovative environment, guiding a high-performing team to deliver excellence. The GMOS contract aims to provide world-class IT support by modernizing and maintaining applications and infrastructure using an integrated IT Service Management approach. Join us to make a meaningful impact on a program of national importance., * Implement and manage web application firewalls and Next-Generation Firewalls (NGFWs) including Palo Alto, F5 BIG-IP ASM, and CA API Gateway for comprehensive security

 * Troubleshoot complex firewall issues with DT teams, facilitate secure connectivity with Government agencies, and liaise with DT's Firewall Advisory Board
 * Install, configure, troubleshoot, and maintain internal wiring, fiber optic cabling, and Layer 2/3 network devices across enterprise infrastructure
 * Install and configure load balancers and API Gateways appliances or virtual instances in data centers, cloud, or hybrid setups
 * Track infrastructure component failures and initiate escalation actions to ensure timely support responses within established Service Level Agreement (SLA) thresholds
 * Coordinate with DT to plan and execute proactive bandwidth upgrades, utilizing emerging technologies such as AI for network optimization and predictive analysis
 * Reestablish network connectivity during office moves, relocations, and facility changes, and submit Technical Service Request (TSR) documentation for new jacks and cabling installations
 * Provide comprehensive support for CA's micro-segmentation platforms and policies.
 * Provide comprehensive support for cloud and software-defined network infrastructure and policies.
 * Participate in design reviews for new facilities or renovation plans, providing technical input on network architecture, cabling infrastructure, and capacity requirements
 * Support disaster recovery network configurations ensuring rapid failover capabilities, redundancy, and minimal downtime during contingency operations
 * Develop and enhance technical or functional workarounds and triage steps that aid Service Desk Technicians in rapidly resolving network issues and improving resolution time
 * Analyze network equipment logs to identify trends, detect problems, and maximize network performance and efficiency