Senior Network Security Engineer - Hybrid Cloud & NAC

Triumph; Dallas (TX); On-site; USD 110,000 - 140,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Paid Time Off

401k

Job summary

Triumph in Dallas is seeking a Senior Network Security Engineer to design, manage, and improve network security across hybrid cloud and on‑premises environments, ensuring secure, reliable access to critical business applications.

You will work with Palo Alto and Fortinet platforms, automate security workflows with APIs, mentor engineers, and contribute to security policy standards while collaborating across Network Engineering, Cloud, and Infrastructure teams.

Qualifications

• 5+ years of experience in network security, network engineering, security engineering, or infrastructure security.
• Hands-on experience managing enterprise firewall environments, including security policies, VPNs, NAT, segmentation, traffic inspection, and troubleshooting.
• Experience supporting Network Access Control (NAC) solutions across wired, wireless, VPN, or remote access environments.
• Experience working in hybrid environments that include on-premises infrastructure and Microsoft Azure.
• Experience with enterprise firewall and NAC platforms, particularly Palo Alto Networks and Fortinet technologies, is strongly preferred.

Responsibilities

• Design, implement, maintain, and troubleshoot network security solutions across on-premises, Microsoft Azure, and hybrid environments.
• Manage enterprise Palo Alto firewall platforms, including security policies, NAT, VPNs, traffic inspection, segmentation, SSL/TLS decryption, threat prevention, and routing integration.
• Administer Network Access Control (NAC) solutions for wired, wireless, VPN, and remote users, including authentication, device profiling, posture validation, and policy enforcement.
• Support network segmentation initiatives using firewall policies, NAC enforcement, VLANs, security zones, and identity-based access controls.
• Manage and enhance network security technologies, including solutions from Palo Alto Networks and Fortinet.
• Troubleshoot complex network and security issues involving firewalls, routing, switching, DNS, DHCP, certificates, authentication, cloud networking, endpoint posture, and VPN connectivity.
• Develop automation and integrations using APIs and scripting to improve reporting, efficiency, and operational processes.
• Create and maintain technical documentation, including security standards, diagrams, implementation plans, runbooks, troubleshooting guides, and rollback procedures.
• Review firewall and NAC policies to ensure they remain secure, effective, and aligned with business requirements.
• Partner with Network Engineering, Security Operations, Infrastructure, Cloud, and Endpoint teams to deliver secure, reliable access to business applications.
• Participate in incident response, technical investigations, root cause analysis, and remediation efforts involving network security controls.
• Mentor fellow engineers by sharing technical expertise and supporting their professional development.
• Contribute to additional network and infrastructure security initiatives as business needs evolve.

Skills

Network security

Firewall management

NAC solutions

Azure hybrid

Scripting / APIs

Documentation

Tools

Palo Alto Networks

Fortinet

NAC platforms

Job description

Triumph in Dallas is seeking a Senior Network Security Engineer to design, manage, and improve network security across hybrid cloud and on‑premises environments, ensuring secure, reliable access to critical business applications.

You will work with Palo Alto and Fortinet platforms, automate security workflows with APIs, mentor engineers, and contribute to security policy standards while collaborating across Network Engineering, Cloud, and Infrastructure teams.