Network Security Engineer

12 hours ago


Singapore RAPSYS TECHNOLOGIES PTE. LTD. Full time

Key Responsibilities Security Implementation & Management Deploy, configure, and maintain F5 systems including LTM , WAF , and API modules. Implement and manage Azure Cloud security controls, including APIM gateways and Network Security Groups (NSGs) . Maintain and administer firewall and intrusion prevention systems (e.g., Cisco FTD/FMC or equivalent). Monitor and troubleshoot network and security performance issues to ensure continuous protection and availability. Security Policy & Configuration Implement and enforce granular security policies across F5, firewalls, and Azure environments. Conduct regular rule base reviews , policy cleanups, and performance optimizations. Ensure consistent policy integration and configuration alignment across application delivery and network security platforms. Documentation & Collaboration Maintain accurate network diagrams, configurations, and standard operating procedures (SOPs) . Work closely with cloud, network, and application teams to align security policies with business and compliance requirements. Support security audits, incident investigations, and continuous improvement initiatives. Qualifications Experience 2-5 years of experience in network security or network engineering roles. Proven track record in deploying and maintaining F5 , Azure security , and firewall solutions. Technical Skills Hands-on experience with F5 BIG-IP platforms ( LTM , WAF/ASM , API ). Strong knowledge of Azure Cloud security , including NSG and APIM . Experience with firewall platforms (e.g., Cisco FTD/FMC , Palo Alto, or similar). Understanding of network protocols (TCP/IP, DNS, Familiarity with security concepts such as firewalls, IDS/IPS, VPNs , and zero-trust principles . Basic knowledge of automation or cloud-native security tools is an advantage. Preferred Certifications Microsoft Certified: Azure Security Engineer Associate Cisco Certified Network Professional (CCNP Security) F5 Certified Administrator or F5 Certified Technology Specialist (CTS) Other relevant certifications such as CISSP or CompTIA Security+



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