Network Security Engineer - WAF & On-Call Expert

ALPHAEUS PTE. LTD.; Singapore; On-site; SGD 60,000 - 100,000; Full time

Job summary

ALPHAEUS PTE. LTD. is seeking a Network Security Engineer to execute operational tasks across a suite of security tools, including firewalls, IPS, proxies, and WAF. You will monitor performance, maintain solutions, and diagnose complex network issues while preparing detailed reports to inform risk decisions.

The role supports post-incident and after-hours troubleshooting, with a focus on strengthening the organization’s security posture through thorough analysis and data-driven insights.

Qualifications

• Familiarity with TCP/IP, VLANs, VPNs and routing/switching concepts.
• Basic to advanced understanding of WAF violations and HTTP status semantics.
• Experience with security appliances from Palo Alto, Check Point, Trend Micro, Fortinet and F5.
• Knowledge of NPM and SIEM tools and their role in security monitoring.
• CCNA/CCNP certifications are a plus.

Responsibilities

• Execute operational tasks across firewalls, IPS, proxies and WAF.
• Monitor performance and maintain security solutions to optimal standards.
• Analyze WAF violations and provide remediation guidance.
• Prepare data reports and support security decision-making.

Skills

TCP/IP

VLANs

VPNs

Routing & Switching

WAF violations interpretation

SIEM

Network Performance Monitoring

Problem-solving

MS Office

Education

CCNA

CCNP

Tools

Palo Alto

Check Point

Trend Micro

Fortinet

F5

NPM

SIEM

Job description

ALPHAEUS PTE. LTD. is seeking a Network Security Engineer to execute operational tasks across a suite of security tools, including firewalls, IPS, proxies, and WAF. You will monitor performance, maintain solutions, and diagnose complex network issues while preparing detailed reports to inform risk decisions.

The role supports post-incident and after-hours troubleshooting, with a focus on strengthening the organization’s security posture through thorough analysis and data-driven insights.