Network Administrator (Senior)
CACI International· enterprise· Defense· Oct 19, 2026 · 8d ago
Ashburn, VA, US
Hybrid
Full-time
Senior
$104K–$218K
8+ years exp
Job description
Job Title: Network Administrator (Senior)
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:
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.
Responsibilities:
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
Qualifications:
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
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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:
$103,800 - $218,100
CACI is an Equal Opportunity 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 other protected characteristic.
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