Senior Network Security Lead - Enterprise Firewall & NAC

99brightminds; Dubai; On-site; AED 420,000 - 660,000; Full time

Job summary

99BrightMinds is seeking an experienced Senior Network Security Lead to lead and manage enterprise network security operations in a large-scale environment. You will secure network infrastructure, manage firewall environments, implement access controls, and ensure alignment with industry best practices.

The role requires hands-on expertise with Cisco Firepower, ASA, ISE/NAC, VPN technologies, and threat prevention, with leadership responsibilities across Security Operations, Infrastructure, and

Qualifications

• Bachelor's degree or higher in IT, CS, Engineering, Cybersecurity or related field.
• 10+ years of enterprise network security and infrastructure experience.
• Strong troubleshooting, analytical, communication, and problem-solving skills.
• Ability to operate in large-scale, highly available, mission-critical environments.

Responsibilities

• Lead administration, configuration, and optimization of Cisco Firepower, Cisco ASA, and enterprise firewall environments.
• Design and maintain secure network architectures with segmentation and enterprise controls.
• Manage Cisco ISE and NAC solutions to enforce secure access across environments.
• Develop and optimize firewall policies, access rules, and rule-base management.
• Configure and troubleshoot Site-to-Site VPNs and Remote Access VPNs for secure connectivity.
• Implement security controls across data centers and cloud/hybrid environments.
• Collaborate with Security Operations, Infrastructure, and Cloud teams to address risks and incidents.
• Lead security hardening, vulnerability remediation, and best-practice implementations across networks.

Skills

Cisco Firepower

Cisco ASA

ISE NAC

Firewall policies

VPNs

Threat prevention

Cloud security

Network segmentation

Incident response

Mentorship

Education

Bachelor's degree in IT/CS/Cybersecurity

Tools

Cisco Firepower

Cisco ASA

Cisco ISE

Job description

99BrightMinds is seeking an experienced Senior Network Security Lead to lead and manage enterprise network security operations in a large-scale environment. You will secure network infrastructure, manage firewall environments, implement access controls, and ensure alignment with industry best practices.

The role requires hands-on expertise with Cisco Firepower, ASA, ISE/NAC, VPN technologies, and threat prevention, with leadership responsibilities across Security Operations, Infrastructure, and