Cybersecurity Engineer - Firewall & SIEM Specialist

ZENITH INFOTECH (S) PTE LTD.; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

Zenith Infotech (S) PTE LTD. in Singapore seeks a Cybersecurity Engineer to support day-to-day operations and maintenance of the organization's cybersecurity infrastructure and security services.

The role focuses on firewall and WAF administration, SIEM operations, vulnerability management, and security monitoring. You will maintain security platforms, monitor controls, coordinate remediation, and prepare reports and dashboards.

Qualifications

• Diploma or Degree in Computer Science, Information Technology, Cybersecurity, Information Security, or a related discipline.
• Minimum 2–5 years of experience in cybersecurity operations, network security administration, or security engineering.
• Experience with Palo Alto Networks firewall administration (e.g. PCNSA) and Splunk certifications preferred.
• Experience administering or supporting Web Application Firewall (WAF) technologies.
• Experience with SIEM platforms such as Splunk, Microsoft Sentinel, QRadar, ArcSight, or equivalent log management and monitoring solutions.
• Experience in vulnerability management, including vulnerability assessments, remediation tracking, and reporting will be an added advantage.

Responsibilities

• Administer, maintain, and support on-premises firewalls, cloud-based network security controls, and related security infrastructure.
• Perform health monitoring, preventive maintenance, and operational support for firewall platforms to ensure optimal performance, availability, and security.
• Execute firewall policy changes, troubleshoot firewall-related issues, and resolve network connectivity issues arising from security configurations and policies.
• Configure, administer, and maintain Web Application Firewall (WAF) platforms, including policy deployment, rule management, policy tuning, signature updates, and false-positive reviews.
• Monitor and analyse firewall, WAF, and security monitoring logs to identify operational issues and escalate as needed.
• Monitor SIEM agent health across servers, coordinate with stakeholders to resolve issues, onboard new systems, and perform completeness checks to validate log coverage.

Skills

Network security concepts

Troubleshooting

Log analysis

Education

Diploma or Degree in Computer Science, Information Technology, Cybersecurity, Information Security, or related

Tools

Palo Alto Networks firewall administration

Splunk

SIEM platforms (Splunk, MS Sentinel, QRadar, ArcSight)

Web Application Firewall (WAF) technologies

Wireshark

tcpdump

Job description

Zenith Infotech (S) PTE LTD. in Singapore seeks a Cybersecurity Engineer to support day-to-day operations and maintenance of the organization's cybersecurity infrastructure and security services.

The role focuses on firewall and WAF administration, SIEM operations, vulnerability management, and security monitoring. You will maintain security platforms, monitor controls, coordinate remediation, and prepare reports and dashboards.