Senior Network Security Engineer

Job Overview

We are looking for an experienced Senior Network Security Engineer to design, implement, maintain and troubleshoot enterprise network and security infrastructure. The ideal candidate will have strong hands-on technical expertise across routing, switching, firewalls, wireless technologies and network security solutions, with the ability to independently manage complex technical incidents and deliver reliable infrastructure services.

Key Responsibilities

• Configure, implement and maintain enterprise network infrastructure, including routers, switches, firewalls and wireless technologies.
• Manage and troubleshoot complex network incidents involving LAN/WAN, routing, switching, VPNs and SD-WAN.
• Implement and maintain network security solutions, including firewall policies, security configurations and access controls.
• Work with Cisco, Juniper, Palo Alto and other enterprise networking and security technologies.
• Manage network maintenance activities, firmware upgrades, patches and security enhancements.
• Troubleshoot and resolve escalated L2 and L3 network and security incidents.
• Perform root cause analysis (RCA) and identify solutions for recurring network issues.
• Monitor network performance, identify potential risks and implement proactive improvements.
• Work with load balancing technologies such as F5 or NetScaler.
• Support wireless networking and authentication technologies.
• Maintain network documentation, configuration records and infrastructure updates.
• Coordinate with customers, vendors and internal technical teams to ensure incidents are resolved within agreed SLAs.
• Contribute to continuous service improvement and technical knowledge sharing.

Requirements & Technical Skills

• 5+ years of hands-on experience in network engineering and network security.
• Strong experience in routing and switching technologies, particularly Cisco or Juniper.
• Hands-on experience with enterprise firewall technologies such as Palo Alto, Cisco ASA/ISE or Fortinet.
• Strong understanding of network security, VPNs, access controls and network infrastructure.
• Experience with SD-WAN technologies.
• Experience with wireless networking and authentication solutions.
• Exposure to load balancing technologies such as F5 or NetScaler.
• Experience with network monitoring and troubleshooting tools such as SolarWinds, NetFlow, Nagios or Wireshark.
• Good understanding of cloud networking across AWS, Azure or GCP.
• Strong troubleshooting, analytical and problem-solving capabilities.
• Excellent communication and customer-facing skills.

Desirable

• Relevant certifications such as CCNP, PCNSE, Fortinet NSE or equivalent.
• Experience working in managed services or enterprise IT environments.
• Experience handling complex escalations and supporting business-critical network infrastructure.