Senior Network Engineer 3 — ISE/NAC Security (On-Site)

The AES Group; Irving (TX); On-site; USD 62,000 - 66,000; Full time

Job summary

The AES Group is seeking a Network Engineer 3 to support network security, firewall policy management, NAC, and application protection services in an industrial setting.

The ideal candidate has 5–7 years of network engineering and security experience, including Cisco ISE. This on-site role offers collaboration with cross-functional teams to maintain secure and reliable network services across multiple client environments.

Qualifications

• Bachelor's degree or equivalent practical experience.
• 5–7 years in network engineering, security, or related infra.
• Strong knowledge of firewall management and network protocols.
• Experience with Cisco ISE and NAC.
• Experience troubleshooting security incidents and production deployments.
• Familiarity with network segmentation and application protection preferred.

Responsibilities

• Provide day-to-day operational support for network security services, firewall policies, and related technical offerings.
• Perform NAC governance and administration using Cisco ISE.
• Support network improvement and risk reduction initiatives, including segmentation and hardware refreshes.
• Manage and support application protection services, proxy policies, and security configurations.
• Maintain network security products and ensure compliance with security practices.
• Troubleshoot firewall, cloud policies, and network traffic issues.
• Collaborate with internal teams to investigate incidents and implement solutions.
• Test configuration changes and service deployments before production.
• Partner with Product Owners to resolve issues and improve reliability.
• Implement and maintain firewall policies, access controls, and web portals.

Skills

Network engineering

Network security

Firewall operations

Cisco ISE

NAC

Security concepts

Education

Bachelor's degree in Cybersecurity, Security Engineering, Security Architecture, CS, or related field

Job description

The AES Group is seeking a Network Engineer 3 to support network security, firewall policy management, NAC, and application protection services in an industrial setting.

The ideal candidate has 5–7 years of network engineering and security experience, including Cisco ISE. This on-site role offers collaboration with cross-functional teams to maintain secure and reliable network services across multiple client environments.