Network Security Engineer - Firewalls & Load Balancing

Peraton; Springfield (VA); On-site; USD 104,000 - 166,000; Full time

Job summary

Peraton seeks an experienced Network Engineer to design, implement, secure, and maintain enterprise network security infrastructure for the DHS CBP NOC. You will work hands-on with F5 BIG-IP, Palo Alto NGFWs, and Cisco FTD managed through FMC in a hybrid enterprise environment.

The role emphasizes securing mission-critical networks, troubleshooting diverse security platforms, and collaborating with government stakeholders to meet compliance and SLA requirements.

Qualifications

• Bachelor's degree or higher with relevant network/security experience.
• 8+ years in enterprise network engineering or security environments.
• Experience administering F5 BIG-IP solutions (LTM, SSL, iRules).
• Experience with Palo Alto Firewalls, Panorama, and FMC.
• Experience with Cisco FTD and FMC.
• Strong TCP/IP, routing, VLANs, VPNs, and network segmentation knowledge.

Responsibilities

• Design, configure, and maintain enterprise network security infrastructure.
• Administer and support F5 BIG-IP environments (LTM, GTM/DNS, SSL, iRules).
• Manage Palo Alto NGFWs and Panorama; configure policies and VPNs.
• Operate Cisco FTD devices via FMC; develop ACP and IPS policies.
• Perform firewall event analysis, security monitoring, and incident handling.
• Collaborate with cyber and gov stakeholders to ensure secure, compliant services.
• Document networks and runbooks; support change management and SLA.
• Assist with Zero Trust architecture and defense-in-depth strategies.

Skills

Network engineering

Enterprise security

TCP/IP networking

VLANs

VPNs

Security monitoring

Incident response

Education

Bachelor's degree

Master's degree

Associate's degree

High School Diploma/equivalent

Tools

F5 BIG-IP

Palo Alto Networks Firewalls

Firepower Management Center (FMC)

Palo Alto Panorama

Cisco Firepower Threat Defense (FTD)

Cisco FMC

SolarWinds

PRTG

Splunk

Wireshark

Job description

Peraton seeks an experienced Network Engineer to design, implement, secure, and maintain enterprise network security infrastructure for the DHS CBP NOC. You will work hands-on with F5 BIG-IP, Palo Alto NGFWs, and Cisco FTD managed through FMC in a hybrid enterprise environment.

The role emphasizes securing mission-critical networks, troubleshooting diverse security platforms, and collaborating with government stakeholders to meet compliance and SLA requirements.