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Network Infrastructure​/System Administrator

Job in McLean, Fairfax County, Virginia, USA
Listing for: CACI International Inc
Full Time position
Listed on 2025-12-20
Job specializations:
  • IT/Tech
    Cybersecurity, Network Engineer, IT Support, Systems Engineer
Salary/Wage Range or Industry Benchmark: 120800 - 265800 USD Yearly USD 120800.00 265800.00 YEAR
Job Description & How to Apply Below

Network Infrastructure/System Administrator

Join to apply for the Network Infrastructure/System Administrator role at CACI International Inc.

The Opportunity

CAA is looking for a Network Infrastructure/System Administrator to join the Luke Team! You will support the customer's data communications network; maintain the network hardware and software as well as monitor the network to ensure availability to all system users; and perform the necessary maintenance to support network availability. You will need to be proficient in Cisco network solutions, as well as software defined networks and firewalls from AWS, Google, and Microsoft.

The purpose of the Luke program, is to provide dev ops, applied technology investigations, operations and maintenance and infrastructure lifecycle support services across the ODNI’s enterprise. Our support in NOVA and Bethesda includes software engineering/development, O&M, technology investigations, customer advocacy, business process engineering, and system design. Invent your future and make a lasting impact at CACI!

Responsibilities
  • Deploy, configure, maintain and monitor all active network equipment (Cisco routers, switches, firewalls) ensuring seamless network operations
  • Responsible for troubleshooting and resolving network issues, implementing security measures and proactively optimizing network performance
  • Monitor and resolve network related service tickets
  • Maintain Standard Operating Procedures (SOPs) and network design documentation
  • Setup user accounts, permissions and passwords
  • Perform network upgrades to maintain system integrity and overall availability
  • Support and administer third-party applications
  • Ensure security and efficiency of IT infrastructure following industry standards
Qualifications Required
  • Active TS/SCI with Polygraph
  • Bachelor's degree in Computer Science, Engineering or similar field or similar experience
  • Experience working with and troubleshooting Cisco and/or Juniper network vendor platforms
  • Knowledge of and experience with networking technology and protocols, TCP/IP, Routing (static, OSPF, BGP, and policy-based), Firewalls (zone based polices and ACLs), SSH, VPNs
  • Knowledge of network management platforms such as Solarwinds
  • Demonstrated understanding of IPv4 networks
  • Experience with network device hardening in accordance with industry best practices
  • Knowledge of different operating systems (Microsoft, Unix, Linux, etc.)
  • Attention to detail, problem solving mindset, critical thinking and team working skills
Desired
  • Cisco CCNP or Juniper JCNIP certifications or skill level at minimum (Senior / Expert)
  • Experience with automating network tasks using Ansible or Python
  • Familiarity with cloud hosting solutions such as Amazon AWS, Microsoft Azure and Google Cloud
  • VMWare experience
  • CompTIA Network+, CCNP, CCNA certifications
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.

Pay Range

Proposed Salary Range For This Position Is $120,800 - $265,800.

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. Employees receive comprehensive benefits such as healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

Cad's equal opportunity statement: 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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