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The Network Security Operations Specialist is responsible for ensuring the stability and performance of network security infrastructure. This role leads the detection, triage and resolution of business-impacting incidents, collaborating with technical teams and third-party providers to restore service and prevent recurrence. Key Responsibilities Serve as the primary point of contact for critical network security incidents, leading bridge calls and coordinating response efforts. Monitor perimeter security components (firewalls, IDS/IPS, proxies, DDI, load balancers) and interpret alerts, dashboards and logs to identify potential service impacts. Perform root-cause analysis and work with engineering teams to implement permanent fixes. Develop and maintain accurate incident documentation, run-books and post-mortem reports. Create simple automation scripts or workflows to streamline incident handling and reporting. Liaise with vendors and external suppliers to escalate complex issues. Communicate incident status and technical details clearly to stakeholders and update knowledge-base articles. Uphold operational standards and governance policies during triage, testing and remediation activities. Required Skills & Experience 8+ years' experience in an enterprise network operations or security support environment. Deep understanding of perimeter security technologies, including next-generation firewalls (e.g., Check Point, Palo Alto, Fortinet, Cisco Firepower, Juniper SRX) and IDS/IPS solutions. Proficiency with NAT, stateful firewall concepts, HA/clustering protocols and policy management. Hands-on experience with tunneling protocols (SSL/TLS, IPsec, GRE) and DMZ/Internet security architectures. Familiarity with DDI solutions (DNS, DHCP, IPAM), proxy/DLP technologies and load balancers (e.g., F5 LTM/APM, NSX AVI). Solid knowledge of PKI concepts (certificates, trust chains, CRLs, OCSP). Strong troubleshooting skills and the ability to align actions with business impact and service-restoration goals. Excellent verbal and written communication skills and experience interfacing with stakeholders at all levels. Demonstrated ownership and accountability, with the ability to hold others to account professionally. Flexible approach to working hours, including participation in on-call rotations. Desired Skills & Qualifications Relevant industry certifications (e.g., CCNP Security, CISSP, CCIE Security). Experience with network automation and scripting (Python, Ansible, Shell, REST APIs). Familiarity with ITIL best practices, incident/problem management and change control processes. Exposure to Agile methodologies and tools (JIRA, Confluence). Experience using configuration-management or network-mapping We regret to inform that only shortlisted candidates will be notified. EA Registration No: NG XUAN, R24123530 Allegis Group Singapore Pte Ltd, Company Reg No. 200909448N, EA License No. 10C4544 #J-18808-Ljbffr