Senior Network Security Engineer

Senior Network & Security Engineer (12+ Years)

Technologies: Fortinet | Cisco | Meraki

Location: Mumbai,India

Experience: 12+ Years

Role: L3 / L4 Support

Role Overview

We are seeking a highly experienced Senior Network & Security Engineer with extensive hands-on expertise in Fortinet, Cisco, and Meraki technologies.

The role involves designing, deploying, and supporting enterprise network and security solutions, handling critical incidents, SD-WAN transformations, and ensuring high availability, performance, and security across the infrastructure.

Key Responsibilities

Network & Security Operations

• Provide L3/L4 support for complex network and security incidents
• Perform advanced troubleshooting for LAN, WAN, wireless, and security issues
• Lead major incident management (MIM) and ensure timely resolution
• Perform Root Cause Analysis (RCA) and preventive actions

Design & Implementation

• Design and implement enterprise network architectures
• Deploy and manage SD-WAN solutions (Fortinet / Meraki)
• Configure high availability (HA), redundancy, and failover mechanisms
• Support network transformation and modernization initiatives

Firewall & Security Management

• Manage firewall rule lifecycle (creation, review, optimization)
• Configure and maintain:
• IPS/IDS policies
• NAT rules
• Threat protection policies
• Ensure compliance with enterprise security standards

VPN & Connectivity

• Configure and troubleshoot:
• Site-to-Site VPN (IPSec)
• Remote Access VPN / SSL VPN
• Optimize connectivity across global locations

Wireless & Campus Networks

• Support Cisco and Meraki wireless solutions (MR / WLC)
• Perform wireless optimization, RF tuning, and troubleshooting

Change & Governance

• Handle change management activities (CAB, risk assessment)
• Maintain technical documentation, SOPs, and architecture diagrams
• Ensure adherence to ITIL processes

Mentorship & Leadership

• Mentor and guide L1/L2 engineers
• Act as technical SME for network/security escalations
• Work closely with architects, vendors, and stakeholders

Key Technical Skills

Fortinet

• FortiGate (Firewall & SD-WAN)
• FortiManager (Centralized management)
• FortiAnalyzer (Logging & analytics)
• FortiSwitch & FortiAP

Cisco

• L2/L3 Switching (VLAN, STP, EtherChannel)
• Routing protocols (OSPF, BGP)
• Wireless (Cisco WLC / APs)
• QoS, High Availability (HSRP/VRRP)

Meraki

• MX (Security & SD-WAN)
• MS (Switching)
• MR (Wireless)
• Dashboard management, AutoVPN

Core Competencies

• SDWAN Architecture & Deployment
• Firewall & Security Policy Design
• IPS/IDS, NAT, VPN
• Network Performance Optimization
• Incident & Problem Management

Preferred Certifications

• Fortinet: NSE 5 / NSE 6 / NSE 7
• Cisco: CCNP / CCIE
• Meraki: CMNA / CMNO

Soft Skills & Behavioral Competencies

• Strong analytical and troubleshooting mindset
• Excellent communication and stakeholder management
• Ability to work under high-pressure incident scenarios
• Strong documentation and process-oriented approach

Additional Expectations (Enterprise Context)

• Experience in global enterprise environments
• Exposure to multi-vendor network ecosystems
• Familiarity with ITSM tools (ServiceNow preferred)
• Understanding of cloud networking (Azure/AWS good to have)