Network Security Engineer

Hamilton Barnes ?; Chicago (IL); On-site; USD 110,000 - 140,000; Full time

Job summary

Hamilton Barnes is seeking an experienced Network Security Engineer to join a global infrastructure team. You will design, implement and support large-scale firewall and network security solutions across offices and data centres, collaborating with networking, cloud and infrastructure teams.

You will design, deploy and manage Palo Alto firewall environments, lead migrations, and mentor junior engineers while driving security improvements and automation across on‑prem and hybrid environments.

Qualifications

• 5+ years of experience in Network Security Engineering.
• Hands-on experience with Palo Alto firewalls and Panorama.
• Strong networking fundamentals (BGP, OSPF, TCP/IP, NAT).
• Experience designing secure enterprise networks and leading migrations.
• Scripting/Automation experience (Python, APIs) is advantageous.

Responsibilities

• Design, deploy and manage Palo Alto firewall environments including Panorama.
• Lead firewall migrations and improve security architecture across global infrastructure.
• Troubleshoot complex network and security issues involving routing, NAT, and packet analysis.
• Work with infrastructure and cloud teams for secure on‑prem and hybrid connectivity.
• Mentor junior engineers and drive operational best practices.
• Identify opportunities to improve security, automation and network performance.

Skills

Network security engineering

Palo Alto firewalls

Networking fundamentals

Firewall migrations

Scripting/Automation

AWS networking exposure

Tools

Palo Alto Panorama

Python scripting

APIs

AWS networking tooling

SSL decryption

Job description

We're looking for an experienced Network Security Engineer to join a global infrastructure team responsible for securing enterprise networks across offices and data centres. This is a highly technical, hands-on role where you'll design, implement and support large-scale firewall and network security solutions while working closely with networking, cloud and infrastructure teams.

What you'll be doing

• Design, deploy and manage Palo Alto firewall environments, including Panorama, security policies and SSL decryption
• Lead firewall migrations and improve network security architecture across global infrastructure
• Troubleshoot complex network and security issues involving routing, NAT, traffic flows and packet analysis
• Work alongside infrastructure and cloud teams to deliver resilient, secure connectivity across on-prem and hybrid environments
• Act as a senior escalation point, mentor junior engineers and help drive operational best practices
• Identify opportunities to improve security, automation and overall network performance

What we're looking for

• 5+ years' experience in Network Security Engineering
• Strong hands-on experience with Palo Alto firewalls and Panorama
• Solid networking fundamentals including BGP, OSPF, TCP/IP, NAT and packet analysis
• Experience designing secure enterprise networks and leading firewall migration
• Scripting or automation experience (Python, APIs or similar) is advantageous
• Exposure to AWS networking, Cloudflare, F5, Arista or other enterprise networking technologies is a plus