Network Engineer 3

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

Title: Network Engineer 3
Location: Nashville, TN (preferred), Dallas, TX, or East Peoria, IL
Work Model: On-site, 5 days per week
Interview Process: One round; virtual/phone and in-person interview formats, with a panel
Pay rate:: $45-$48/hr

About The AES Group

The AES Group is a premier technology and engineering consulting company that has been bringing businesses and talent together for over 20 years to deliver innovative solutions that have the greatest positive impact on society. AES has helped over 40 business enterprises, including Fortune 500 companies, engage their customers, empower their employees, and transform their business operations with the power of cloud, data, AI, engineering, and other emerging technologies.

Position Overview

Our client is seeking a skilled Network Engineer 3 on behalf of one of our clients in the industrial and manufacturing industry. This role focuses on operational support for network security, firewall policy management, Network Access Control (NAC), and application protection services.

The ideal candidate will bring 5 7 years of relevant experience in network operations and security, strong troubleshooting capabilities, and functional knowledge of Cisco Identity Services Engine (ISE). The successful candidate will help maintain secure and reliable network services, implement network improvements, reduce security risks, and support technical changes through testing and controlled production deployments.

Key Responsibilities

• Provide day-to-day operational support for network security services, firewall policies, and related technical offerings.
• Perform Network Access Control (NAC) governance and administration activities using Cisco Identity Services Engine (ISE).
• Support network improvement and risk reduction initiatives, including network segmentation, application protection, and hardware refresh projects.
• Manage and support application protection services, proxy policies, and associated security configurations.
• Maintain network security products, tools, and technical services to ensure operational reliability and compliance with established security practices.
• Troubleshoot and resolve technical issues involving firewalls, cloud policies, network traffic, and other supported network services.
• Collaborate with internal technical teams and stakeholders to investigate incidents, identify root causes, and implement effective solutions.
• Test network configuration changes, new processes, and service deployments, ensuring quality assurance before production implementation.
• Partner with Product Owners to resolve technical issues and improve the performance and reliability of network security services.
• Implement and maintain technical and process requirements related to firewall policies, network posture, access controls, and web-based portals.
• Contribute to continuous service improvement by identifying operational gaps, reducing risks, and strengthening network security practices.

Required Qualifications

• Bachelor's degree in Cybersecurity, Security Engineering, Security Architecture, Computer Science, or a related field; equivalent practical experience will also be considered.
• Approximately 5 7 years of relevant experience in network engineering, network security, firewall operations, or related infrastructure services.
• Working knowledge of cybersecurity principles, network security best practices, and enterprise network management.
• Understanding of network architecture, data flows, traffic patterns, and communication protocols.
• Strong knowledge of firewall management, firewall policy administration, and network protocols.
• Functional knowledge and hands-on experience with Cisco Identity Services Engine (ISE) and Network Access Control (NAC).
• Experience troubleshooting network security incidents, firewall issues, access control problems, and related technical challenges.
• Experience supporting network operations, security policy management, testing, change implementation, and production deployments.
• Familiarity with network segmentation, application protection, proxy policies, and security risk reduction initiatives is preferred.

Required Soft Skills

• Advanced customer service skills with a strong focus on service quality and stakeholder satisfaction.
• Excellent troubleshooting, analytical thinking, and problem-solving abilities.
• Effective verbal and written communication skills.
• Ability to collaborate with cross-functional technical teams, internal stakeholders, and Product Owners.
• Strong attention to detail and the ability to manage operational issues in a structured, service-oriented environment.