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# Network Firewall Engineer

- **Company:** CACI International Inc.
- **Location:** Sterling, VA, United States
- **Experience:** Expert
- **Salary:** $120,800.0 - $265,800.0
- **Contract:** Permanent contract
- **Skills:** Access Control List, Application Firewall, Bash Shell, Border Gateway Protocol, Cisco PIX, Computer Networks, Network Address Translation, Domain Name System (DNS), Enhanced Interior Gateway Routing Protocol, Hypertext Transfer Protocols (HTTP), Intrusion Detection Systems, Virtual Private Networks (VPN), OSI Models, Python (Programming Language), Network Security, Network Architecture, Network Protocols, Open Shortest Path First (OSPF), Performance Tuning, TCP/IP, Network Routing, Scripting, Firewalls (Computer Science), SDN Network, Palo Alto Networks
- **Published:** May 31, 2026
- **Apply:** https://www.juju.com/job/00000000g3ylyn

## About the Role

+ Bachelor's degree in a Technical field or equivalent work experience

 + 10+ years of related work experience

 + TS/SCI with Poly

 + Exceptional organizational skills and attention to detail

 + Expert-level knowledge of major firewall platforms (e.g., Palo Alto, Cisco ASA, Forcepoint)

 + Strong understanding of networking protocols, OSI model, and common network architectures

 + Experience with network security and software-defined networking (SDN) concepts

 + Hands-on experience with network security concepts, such as VPNs, NAT, IDS/IPS, and DMZ configurations.

 + Strong understanding of network protocols (TCP/IP, DNS, HTTP, etc.), network routing protocols (OSPF, EIGRP, BGP), and network architectures.

 + Excellent troubleshooting, problem-solving, and analytical skills

 + Strong communication skills, both written and verbal

Desired:

 + Industry certifications such as CISSP, CISM, CCNP Security, Palo Alto PCNSE, or equivalent are highly desired.

 + Proficiency in scripting languages (e.g., Python, Bash) for automation and management tasks

## Description

**The Opportunity** : We are seeking a skilled and detail-oriented Network Firewall Technician to support the implementation, configuration, and maintenance of our organization's firewall infrastructure. The ideal candidate will work closely with the network security team to ensure the effective operation and security of our network perimeter defenses., + Assist in the implementation and configuration of firewall systems across various platforms

 + Perform day-to-day firewall administration tasks, including rule updates, policy modifications, and access control list (ACL) management

 + Monitor firewall logs and alerts, responding to, and escalating security incidents as appropriate

 + Conduct regular firewall health checks and performance tuning

 + Assist in troubleshooting network connectivity and security issues related to firewalls

 + Help maintain firewall documentation, including configuration changes and standard operating procedures

 + Participate in firewall upgrade projects and new deployments

 + Assist in conducting periodic firewall rule reviews and clean-up efforts

 + Support the implementation of next-generation firewall features such as IPS and application control

 + Collaborate with other IT teams members to ensure proper integration of firewall systems with other network components


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