Network Security / Firewall Engineer

Job Title: Network Security /Firewall Engineer
Monthly Salary: $9,500 – $13,500 SGD
Location: Singapore
Employment Type: Full-time, Permanent

Roles & Responsibilities

• Manage enterprise firewall infrastructure (Palo Alto, Fortinet, or Cisco ASA)
• Implement and maintain firewall rule lifecycle (requests, changes, reviews, clean-up)
• Design and maintain network segmentation and micro-segmentation strategies
• Implement and support NAC (Network Access Control) solutions (Cisco ISE, Aruba ClearPass)
• Deploy and manage ZTNA (Zero Trust Network Access) solutions (Zscaler, etc.)
• Manage SSL/TLS certificate lifecycle for network infrastructure
• Review and approve firewall change requests based on security posture
• Perform firewall rule audits and optimization
• Investigate security alerts from firewalls and IDS/IPS systems
• Maintain documentation of network security architecture and processes
• Participate in security incident response related to network infrastructure
• Stay current with emerging threats and security technologies

Job Requirements

• Bachelor's Degree in Information Security, Computer Science, or related field
• Minimum 8 years of experience in network security engineering
• PCNSE (Palo Alto) or NSE 7 (Fortinet) certification required
• Deep understanding of TCP/IP, stateful inspection, and application identification
• Experience with ZTNA architectures and implementation
• Knowledge of NAC solutions and 802.1X
• Understanding of crypto protocols (IPsec, SSL/TLS)
• Scripting ability for automation (Python, PowerShell) preferred
• Strong analytical and problem-solving skills
• Singaporeans and PRs are encouraged to apply.