Network Security Engineer

Key Responsibilities • Design, implement, configure and maintain enterprise LAN/WAN and network infrastructure. • Manage and troubleshoot network devices, security appliances, load balancers and network services. • Perform Level 2/3 troubleshooting, root cause analysis and resolution of complex network incidents. • Monitor network performance, availability, capacity and security, and proactively identify potential issues. • Support network infrastructure upgrades, migrations, technology refreshes and improvement initiatives. • Implement and maintain network security policies, firewall configurations and secure connectivity. • Support DNS, DHCP and IP address management across the enterprise environment. • Work closely with Infrastructure, Cybersecurity, Cloud, Application and Operations teams on network-related projects and incidents. • Coordinate with technology vendors and service providers for technical escalations and issue resolution. • Maintain accurate network diagrams, configurations, documentation, SOPs and operational procedures. • Participate in change management, incident management and scheduled maintenance activities. • Ensure network infrastructure adheres to organisational security, resilience, availability and compliance standards. • Participate in disaster recovery, business continuity and infrastructure resilience initiatives where required. Technology Environment Hands-on experience with the following technologies is required: • Cisco – Routing & Switching • F5 – Load Balancing / Application Delivery • Fortinet – Network Security / Firewalls • Palo Alto – Network Security / Firewalls • Check Point – Network Security / Firewalls • Infoblox – DNS / DHCP / IPAM • RSA – Security / Authentication solutions • Riverbed – Network Performance / Optimisation solutions Requirements • Diploma or Bachelor's Degree in Computer Science, Information Technology, Engineering or a related discipline. • 5+ years of relevant Network Engineering experience in enterprise environments. • CCNP certification is required. • Strong hands-on experience in Cisco routing and switching. • Strong understanding of TCP/IP, VLAN, routing, switching, DNS, DHCP, VPN and network security. • Hands-on experience with multiple enterprise security and network platforms listed above. • Experience troubleshooting complex network and security issues in business-critical environments. • Strong understanding of network security principles, firewall policies and secure connectivity. • Experience working with cross-functional technology teams and external vendors. Preferred/ Advantageous • Experience in energy, utilities, financial services or other business-critical environments. • Experience with network monitoring and performance management tools. • Additional vendor certifications in F5, Palo Alto, Fortinet, Check Point or Infoblox would be advantageous.