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.