CCIE Network Security Engineer (L3) – Enterprise Infra

NTT SINGAPORE PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

NTT SINGAPORE PTE. LTD. seeks an experienced L3 Network Security Engineer to provide advanced support, administration, and troubleshooting for enterprise network and security infrastructure in Singapore.

The role requires hands-on expertise with Cisco, Palo Alto, Check Point, Fortinet, Infoblox, and F5, plus automation skills using Python and Ansible. CCIE certification is highly preferred and advantageous for this senior position.

Qualifications

• 8+ years of experience in network and security engineering (required).
• Hands-on with Cisco Routing & Switching, Palo Alto, Check Point, Fortinet, Infoblox, and F5.
• Automation experience with Python and Ansible.
• CCIE certification (Enterprise Infrastructure/Security) preferred.

Responsibilities

• Provide Level 3 support for complex network and security incidents.
• Design, implement, and maintain enterprise network security solutions.
• Manage and troubleshoot Cisco routers, switches, firewalls, load balancers, and services.
• Administer Palo Alto, Check Point, and Fortinet firewalls.
• Support Infoblox DNS, DHCP, IPAM.
• Configure and manage F5 Load Balancers (LTM/GTM).
• Develop network automation scripts using Python and Ansible.
• Perform root cause analysis and implement preventive measures.
• Collaborate with cross-functional teams on infrastructure projects and security initiatives.
• Ensure adherence to security, compliance, and operational standards.

Skills

8+ years of experience in Network &amp

Cisco Routing & Switching

Palo Alto

Check Point

Fortinet Firewalls

Infoblox DNS/DHCP/IPAM

F5 Load Balancers

Python

Ansible

Education

CCIE Certification (Enterprise Infrastructure/Security)

Tools

Python

Ansible

Infoblox

F5 BIG-IP

Job description

NTT SINGAPORE PTE. LTD. seeks an experienced L3 Network Security Engineer to provide advanced support, administration, and troubleshooting for enterprise network and security infrastructure in Singapore.

The role requires hands-on expertise with Cisco, Palo Alto, Check Point, Fortinet, Infoblox, and F5, plus automation skills using Python and Ansible. CCIE certification is highly preferred and advantageous for this senior position.