Network Engineer 3: Security & Firewall with ISE on-site

Cullerton Group; Nashville (TN); On-site; USD 65,000 - 92,000; Full time

Benefits offered by this job

Health insurance

Vision insurance

Dental insurance

401k

Holiday pay

Job summary

Cullerton Group in Nashville, TN seeks a Network Engineer 3 focused on network security and firewall management for enterprise environments. The role is 100% onsite across Nashville, Dallas, or East Peoria and runs for 12 months with the possibility of permanent placement.

You will handle firewall policies, NAC governance with Cisco ISE, and network segmentation, collaborating with product owners and IT teams to ensure secure, reliable services.

Qualifications

• Bachelor's degree in cybersecurity, security engineering/architecture or computer science, or equivalent experience.
• 5–7 years of relevant experience in network engineering, security operations or cybersecurity operations.
• Strong understanding of cybersecurity network best practices.

Responsibilities

• Provide daily operational support for enterprise network security, firewall policies and services.
• Govern NAC using Cisco Identity Services Engine (ISE).
• Support network segmentation, proxy policies and hardware refresh initiatives.
• Troubleshoot firewall policies, cloud policies and network traffic flows.
• Test and validate network changes before production deployment.
• Collaborate with teams to maintain security infrastructure and improve processes.

Skills

Firewall management

Cisco ISE

Network security

Troubleshooting

Communication skills

On-site work

Education

Bachelor's degree in Cybersecurity / CS

Tools

Network monitoring tools

Job description

Cullerton Group in Nashville, TN seeks a Network Engineer 3 focused on network security and firewall management for enterprise environments. The role is 100% onsite across Nashville, Dallas, or East Peoria and runs for 12 months with the possibility of permanent placement.

You will handle firewall policies, NAC governance with Cisco ISE, and network segmentation, collaborating with product owners and IT teams to ensure secure, reliable services.