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Network Security Administrator

Columbia, Maryland, United States of America
Full Time On-site

Summary

Job Description

Network Security Administrator

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Regular

Percentage of Travel Required: None

Type of Travel: None

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The Network Security System Administrator will work within the Network Security Implementation and Sustainment (NSIS) Services, and will provide support for implementation, troubleshooting and maintenance of Network Security Boundaries.

Responsibilities:
- The candidate will manage network security boundary infrastructure and any processes related to the systems.
- Provide support to network security boundaries including day-to-day operations, monitoring and problem resolution for all of the network devices, firewalls, VPNs, web proxies, load balancers, etc.
- Provide Tier 1 (Basic help desk resolution) and Tier 2 (in-depth technical support) problem identification, diagnosis, and resolution of problems.
- Provide support for the escalation and communication of status to agency management and internal customers.
- Provide support for hardware problems and remain involved in the resolution process.
- Configure and manage network devices, firewalls, VPNs, web proxies, and load balances and install/load operation system software, troubleshoot, maintain integrity, and configure network components along with implementing operating systems enhancements to improve reliability and performance.

Qualifications:
The candidate must be able to perform the following:
- Manage the daily activities of configuration and operation of Information Technology Network Security Boundaries.
- Provide Tier 1 problem identification, diagnosis, and resolution of problems
- Provide assistance to users in accessing and using Network Security Boundaries
- Provide support for implementation, troubleshooting, and maintenance of Network Security Boundaries

Education and Experience:
- Batchelor's degree in a technical discipline from an accredited college or university is required.
- Five (5) years of SA experience with a Bachelor's degree. Additional years of experience maybe considered in lieu of a Bachelors degree.
 

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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. 

 

Your potential is limitless. So is ours.

Learn more about CACI here.

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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. Learn more here.

The proposed salary range for this position is:

$86,600 - $181,800

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.

About CACI

CACI

CACI is a leading U.S. defense and intelligence technology company that supports some of the most critical missions across the Department of Defense, intelligence community, and federal civilian agencies. With decades of experience in cybersecurity, electronic warfare, software development, and mission systems, CACI focuses on helping government customers modernize operations and respond to rapidly evolving national security threats.

For job seekers, CACI offers opportunities to work across a wide range of high-impact fields, including software engineering, cyber operations, intelligence analysis, IT modernization, communications, and defense systems engineering. The company is especially attractive to veterans, cleared professionals, and mission-driven technologists, with a significant portion of its workforce holding security clearances and military experience. CACI careers often involve directly supporting operational missions where performance and reliability matter in real time.

Unlike pure product companies, CACI operates at the intersection of consulting, engineering, and mission support—building and integrating systems that help the U.S. government improve decision-making, secure networks, and maintain battlefield and intelligence superiority. Employees often work on long-term government programs involving cloud migration, electronic warfare, counter-drone systems, and enterprise IT modernization across air, land, sea, space, and cyber domains.

As national security priorities continue to shift toward cyber defense, AI-enabled systems, and rapid modernization of government infrastructure, CACI remains a major employer in the defense services ecosystem. For professionals seeking stable, mission-focused work with strong demand for technical talent and opportunities to support real-world operations, CACI continues to stand out as a top-tier defense industry employer.

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