Firewall Support Engineer

THALES SOLUTIONS ASIA PTE. LTD.; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

THALES SOLUTIONS ASIA PTE. LTD.

is seeking a Firewall Support Engineer to safeguard company data by administering security infrastructure, monitoring breaches, and conducting in-depth incident investigations. The role requires 3+ years in cybersecurity with L2 responsibilities, strong knowledge of security protocols, LAN/WAN networks, Linux/Windows, and cloud security; hands-on with SIEM, firewalls, and vulnerability scanners.

Qualifications

• Bachelor’s degree in Information Security, Computer Science, or related field, or equivalent work experience.
• 3+ years in cybersecurity or information security roles with focus on L2 support or similar responsibilities; 1-2 years on mission-critical systems with tight SLA (99.9%).
• Strong understanding of security protocols, TCP/IP, network security, OS (Linux, Windows), and cloud security concepts; ITSM knowledge is a plus.
• Hands-on experience with security tools such as SIEM, firewalls, vulnerability scanners, and IR platforms.
• Certifications such as CompTIA Security+, CEH, CISSP are valued.

Responsibilities

• Incident Response: Investigate and respond to security incidents escalated from L1 support, performing root cause analysis to prevent recurrence.
• Monitoring & Analysis: Monitor security alerts from SIEM platforms and dashboards.
• Vulnerability Management: Conduct regular vulnerability assessments and coordinate penetration testing.
• Security Infrastructure Management: Implement, configure, troubleshoot, and maintain security technologies (firewalls, IDS/IPS, EDR/AV, tokenization, HSM, 2FA, PAM, IBM Guradium, Rapid 7).
• Policy & Documentation: Develop and enforce security policies and documentation; ensure regulatory compliance.
• Threat Hunting: Proactively search for hidden threats and weaknesses to improve detection.
• Collaboration & Mentorship: Work with IT, development, and L3 teams; train junior staff.
• Reporting: Prepare detailed incident analyses and system status reports.
• On-Call Support: May require 24/7 on-call rotation and on-site presence.

Skills

Analytical thinking

Problem-solving

Communication

Collaboration

On-call readiness

Education

Bachelor’s degree in Information Security / Computer Science

Tools

SIEM

Firewalls

Vulnerability scanners

Incident response platform

Job description

The Firewall Support Engineer plays a crucial role in safeguarding the company's data and systems. This individual is responsible for day-to-day administration of security infrastructure, monitoring breaches, conducting in-depth incident investigations, and implementing technical solutions to mitigate risks. The role requires a deep understanding of network protocols, security tools, and the ability to work under pressure during security incidents.

Responsibilities

• Incident Response: Investigate and respond to security incidents and breaches escalated from L1 support, performing root cause analysis to prevent recurrence.
• Monitoring & Analysis: Monitor and analyze security alerts and events from various sources, including SIEM (Security Information and Event Management) platforms (e.g., QRADAR) and security dashboards.
• Vulnerability Management: Conduct regular vulnerability assessments and coordinate penetration testing activities to identify weaknesses in systems and networks.
• Security Infrastructure Management: Implement, configure, troubleshoot, and maintain security technologies such as firewalls (e.g., Palo Alto, Fortigate, Check Point), intrusion detection/prevention systems (IDS/IPS), EDR/AV, CipherTrust (Tokenization Server), HSM, 2FA, PAM, IBM Guradium and Rapid 7.
• Policy & Documentation: Develop, maintain, and enforce security policies, procedures, and documentation, ensuring compliance with industry standards and regulations.
• Threat Hunting: Proactively search for hidden threats, malware, and vulnerabilities in the system to enhance detection capabilities.
• Collaboration & Mentorship: Collaborate with IT, development, and L3 teams to address security issues and implement best practices. May also assist in training and mentoring junior (L1) security staff.
• Reporting: Prepare detailed reports and documentation of security incidents, analyses, and system status for management and compliance purposes.
• On-Call Support: May require participation in a 24/7 on-call rotation to address critical incidents and ensure minimal downtime and be onsite if necessary

Requirements

• Education: Bachelor's degree in Information Security, Computer Science, or a related field, or equivalent work experience.
• Experience: 3+ years of proven experience in cybersecurity or information security roles, with a focus on L2 support or similar responsibilities. Minimally 1-2 years of experience in supporting mission critical systems with a stringent SLA of 99.9%
• Technical Proficiency: Strong understanding of security protocols, TCP/IP, network security, operating systems (Linux, Windows), and cloud security concepts. Well‑versed in IT Service Management (ITSM) standards, processes, guidelines and best practices is an advantage.
• Tool Experience: Hands‑on experience with security tools such as SIEM, firewalls, vulnerability scanners (e.g., Tenable), and incident response platforms.
• Certifications (Preferred): Relevant certifications such as CompTIA Security+, Certified Ethical Hacker (CEH), or CISSP are highly valued.
• Soft Skills: Strong analytical thinking, problem‑solving skills, attention to detail, and excellent communication and collaboration skills.