Role Description Network Security Engineer Job Summary We are seeking an experienced Network Engineer to manage and support the customer's enterprise network and security infrastructure.

The ideal candidate will have robust hands-on experience with Fortinet firewalls, Cisco switching, Juniper wireless technologies, network monitoring, incident troubleshooting, and onsite hands-and-feet support.

This role requires close collaboration with customer teams, vendors, and global support organizations to ensure a secure, reliable, and high-performing network environment.

Key Responsibilities Network & Security Operations Administer, monitor, and troubleshoot enterprise network infrastructure, including FortiGate Firewalls, Cisco Switches, and Juniper Wireless infrastructure.

Configure, maintain, and optimize firewalls, switching, wireless, VLANs, routing, VPNs, and network security policies. Perform firmware upgrades, configuration backups, patching, and preventive maintenance on network devices.

Monitor network availability, performance, and capacity, proactively identifying and resolving issues.

Diagnose and resolve LAN, WAN, Wi-Fi, VPN, DNS, and connectivity issues.

Participate in network implementation, upgrades, migrations, and disaster recovery activities.

Ensure network security compliance by implementing approved security policies and best practices.

Monitoring & Incident Management Monitor enterprise network infrastructure using Customer-owned monitoring tools.

Perform triage, fault isolation, and root cause analysis for network-related events. Create, update, and resolve network incidents and service requests within agreed SLAs. Execute approved network changes in accordance with change management procedures. Prepare operational reports, network health dashboards, and incident summaries.

Onsite Hands-and-Feet Support Provide onsite support for installation, rack-and-stack, cabling, hardware replacement,



device provisioning, and troubleshooting.

Coordinate with remote engineering teams during network maintenance and incident resolution.

Support data center and branch office network infrastructure activities.

Vendor Coordination Coordinate with OEM vendors, ISPs, telecommunications providers, and third-party support teams for issue resolution and escalation management.

Manage vendor support cases through closure.

Collaborate with customer infrastructure and security teams to ensure seamless network operations.

Required Technical Skills Fortinet

FortiGate Firewalls, Cisco Switching and Routing,Juniper

Wireless Infrastructure TCP/IP, LAN/WAN, VLANs, STP, Routing Protocols (OSPF/BGP preferred)

VPN Technologies (Site-to-Site and Remote Access) DNS, DHCP, NAT

Network Security and Firewall Policy Management Enterprise

Network Monitoring Tools

Network Performance Analysis and Troubleshooting

Configuration Backup and Firmware Upgrades

ITSM Tools (ServiceNow preferred) Required Qualifications 8–12 years of enterprise network engineering experience. Strong knowledge of network architecture, routing, switching, wireless, and security technologies.

Experience supporting large enterprises or data center environments.

Excellent troubleshooting and analytical skills.

Strong communication and documentation skills.

Ability to work independently and collaborate with cross-functional and global teams.

Preferred Certifications Cisco CCNA / CCNP Fortinet Certified Professional (FCP) / NSE Juniper JNCIA / JNCIS Soft Skills Excellent problem-solving and analytical abilities.

Strong customer and stakeholder management skills. Ability to work under pressure and manage multiple priorities. Excellent verbal and written communication skills.

Skills BGP, High Availability and Disaster Recovery, Incident Management, Issue Analysis, DHCP, ITIL, Network Security, OSPF, Observability, Fortinet FortiGate, Production Support

📌 Network Security Engineer with Fortinet firewalls, Cisco switches (Thiruvananthapuram)
🏢 UST
📍 Thiruvananthapuram