Senior AWS Network & Security Engineer (L3)

NTT SINGAPORE PTE. LTD.; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

NTT Singapore Pte. Ltd. is seeking a Network & Firewall Engineer (L3) to ensure secure, available, and high-performance AWS networking and firewall services.

The role focuses on L3 design, complex incident resolution, and controlled changes within service commitments. The candidate will work with VPCs, subnets, TGWs, VPNs, security groups, NACLs, AWS Network Firewall, WAF, and Palo Alto technologies, including Squid proxy operations.

Qualifications

• Bachelor's degree in IT/Computing or equivalent experience.
• Certifications relevant to cloud networking and security add weight.

Responsibilities

• Designs, administers and supports AWS VPCs, subnets, routing and TGW connectivity.
• Configures and troubleshoots VPN connectivity and routing issues.
• Reviews security groups and NACLs in line with security requirements.
• Administers AWS Network Firewall, WAF and Palo Alto firewall technologies.
• Supports ALB, NLB and GWLB services and investigates availability and traffic flow.

Skills

AWS networking

Firewall technologies

Network security

Troubleshooting

Leadership/mentoring

Education

Bachelor's degree in IT/Computing

AWS Advanced Networking Certification

Palo Alto PCNSE (nice to have)

CCNP Enterprise or Security (nice to have)

Tools

Squid proxy

Palo Alto firewall

AWS Network Firewall

WAF

Job description

NTT Singapore Pte. Ltd. is seeking a Network & Firewall Engineer (L3) to ensure secure, available, and high-performance AWS networking and firewall services.

The role focuses on L3 design, complex incident resolution, and controlled changes within service commitments. The candidate will work with VPCs, subnets, TGWs, VPNs, security groups, NACLs, AWS Network Firewall, WAF, and Palo Alto technologies, including Squid proxy operations.