Senior Network Security Lead

99brightminds; Dubai; In loco; AED 420.000 - 660.000; Tempo pieno

Descrizione del lavoro

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

Competenze

• 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.

Mansioni

• 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.

Conoscenze

Cisco Firepower

Cisco ASA

ISE NAC

Firewall policies

VPNs

Threat prevention

Cloud security

Network segmentation

Incident response

Mentorship

Formazione

Bachelor's degree in IT/CS/Cybersecurity

Strumenti

Cisco Firepower

Cisco ASA

Cisco ISE

Descrizione del lavoro

99BrightMinds is seeking an experienced Senior Network Security Lead to lead and manage enterprise network security operations within a large-scale, mission-critical environment. The successful candidate will be responsible for securing network infrastructure, managing firewall environments, implementing access control solutions, and ensuring the organization’s security posture is aligned with industry best practices.

Key Responsibilities & Required Expertise

• Lead the administration, configuration, and optimization of Cisco Firepower, Cisco ASA, and enterprise firewall environments.
• Design, implement, and maintain secure network architectures with a strong focus on network segmentation, threat prevention, and enterprise security controls.
• Manage and maintain Cisco ISE and Network Access Control (NAC) solutions to enforce secure access across corporate and operational environments.
• Develop, review, and optimize firewall policies, access control rules, and rule-base management to ensure security, performance, and compliance.
• Configure, support, and troubleshoot secure connectivity solutions, including Site-to-Site VPNs, Remote Access VPNs, and secure remote access technologies.
• Implement and maintain security controls across data center environments, ensuring infrastructure security and operational resilience.
• Lead security initiatives across cloud and hybrid environments, ensuring secure connectivity, segmentation, and access governance.
• Monitor, analyze, and respond to network security threats, leveraging security monitoring tools and threat prevention technologies.
• Collaborate with Security Operations, Infrastructure, and Cloud teams to identify risks, investigate incidents, and implement remediation actions.
• Conduct security hardening, vulnerability remediation, and security best-practice implementation across network infrastructure.
• Perform advanced troubleshooting and root cause analysis for complex network security incidents.
• Develop and maintain network security documentation, operational procedures, standards, and architecture diagrams.
• Provide technical leadership, mentorship, and guidance to security and network engineering teams.
• Support security audits, compliance initiatives, risk assessments, and continuous security improvement programs.
• Contribute to the design and implementation of scalable security solutions supporting large-scale, mission-critical environments.

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, Engineering, Cybersecurity, or a related field.
• 10+ years of relevant professional experience in enterprise network security and infrastructure environments.
• Strong troubleshooting, analytical, communication, and problem-solving skills.
• Ability to work effectively in large-scale, highly available, mission-critical environments.