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# Senior Firewall Engineer

- **Company:** CACI International Inc.
- **Location:** Springfield, VA, United States
- **Experience:** Expert
- **Salary:** $75,200.0 - $158,100.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Unix, Cyber Security, System Configuration, Intrusion Detection Systems, Network Security, Network Routers, Load Balancing, Firewalls (Computer Science), Juniper, Palo Alto Networks, Fireeye, Cisco, Vmware
- **Published:** August 14, 2026
- **Apply:** https://dejobs.org/x/x/E2E025DB09A04E87A2EE13D0240E2A8A/job/

## About the Role

Required:

 * Active TS/SCI (Post-hire: Must be able to successfully pass/maintain a U.S. Government Polygraph)

 * BA/BS Degree in a related field (IT, Cybersecurity, and other related fields) Additional experience may be considered in lieu of a degree

 * Minimum 5 years of related technical experience in Network Security with large-scale enterprise/global networks in a high-paced, diverse environment.

 * DoD 8140.01 and DoD 8570.01-M IAT Level II compliant certification (current)

 * Post-hire: Must be able to successfully obtain/maintain CSSP Infrastructure Support certification within 120 days of start date

 * Experience with Firewalls (e.g. Palo Alto, Juniper, Cisco, etc.)

 * Experience with Routers/Switches (e.g. Juniper, Cisco, etc.)

 * Experience with Intrusion Detection Systems/IDS Products (e.g. FireEye, F5 Load Balancer, Cisco FTD, etc.)

 * Experience with Unix, RHELS OS, Windows Enterprise AD, VMware

## Description

As a member of the TCS Network Security Services (NSS) team, you will work with both corporate and customer leadership to research, analyze, and implement enterprise-wide network security solutions/capabilities/enhancements to support customer business/mission goals and objectives.

Responsibilities

 * Assist with design, analysis, testing, and implementation of state-of-the-art secure network architectures.

 * Conduct risk assessment and provide design recommendations.

 * Manage WAN, LAN, CAN, and remote network security as well as incident and problem management.

 * Oversee security infrastructure sustainment, maintenance, and advanced configuration. (firewalls, F5 load balancers, web gateways, mail gateways, IDS, and management tools).

 * Oversee the reporting, documentation, and investigation of all security-related incidents; lead the development and implementation of corrective measures.

 * Develop and execute standard operating procedures (SOPs) for security tools.

 * Evaluate and report on new network Security technologies to enhance the capabilities of the network.

 * Act as liaison to the contract and customer management, and government Designated Approving Authority (DAA) regarding network security status, policies, and procedures.


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