About the job

: Network Administrator – L3 (Infrastructure)

Role: Network Administrator – L3

Experience: 8+ Years

Domain: Infrastructure / Network Operations

Location: Mumbai

Aruba experience is must.

Position Overview

We are looking for an experienced L3 Network Administrator with strong expertise in enterprise network infrastructure, security devices, and SD-WAN technologies. The candidate will be responsible for designing, implementing, managing, and troubleshooting complex network environments involving Cisco/Aruba networking solutions, Palo Alto firewalls, SD-WAN, WAF, IPS, and related infrastructure components.

The ideal candidate should have strong hands-on experience in network administration, incident resolution, performance monitoring, and maintaining highly available enterprise networks.

Key Responsibilities

- Manage and administer enterprise-level network infrastructure including Cisco and Aruba switches, routers, and wireless access points.
- Perform advanced troubleshooting and root cause analysis for complex network issues.
- Configure, monitor, and maintain LAN/WAN infrastructure, switching, routing, and connectivity solutions.
- Administer and troubleshoot Aruba Silver Peak SD-WAN environments.
- Configure and manage Palo Alto Firewalls, including policy management, security rules, VPN configuration, and troubleshooting.
- Manage and support WAF (Web Application Firewall) and IPS (Intrusion Prevention System) solutions.




- Perform network security administration, monitoring, and incident handling.
- Manage and troubleshoot APS links / WAN connectivity links.
- Conduct network performance monitoring, capacity planning, and optimization activities.
- Handle network changes, upgrades, migrations, and implementation activities.
- Collaborate with security, cloud, and infrastructure teams for enterprise network solutions.
- Maintain network documentation, diagrams, configurations, and operational procedures.
- Provide L3 support for critical network incidents and ensure timely resolution.

Required Technical Skills

- 8+ years of experience in Network Administration / Network Engineering.
- Strong hands-on experience with:
- Cisco Networking (Switches, Routers, Routing & Switching)
- Aruba Networking Solutions
- Aruba Silver Peak SD-WAN
- Palo Alto Firewall Administration
- WAF and IPS technologies
- Wireless Access Points
- LAN/WAN Infrastructure
- Enterprise Network Troubleshooting

Preferred Skills

- Experience with network monitoring and troubleshooting tools.
- Solid understanding of:
- TCP/IP
- VLANs
- Routing protocols
- Switching concepts
- Network security principles
- VPN technologies
- Firewall policies and rule management

· Experience working in large-scale enterprise infrastructure environments. · Strong analytical, troubleshooting, and communication skills.

📌 Network Administration (Mumbai)
🏢 Innova ESI
📍 Mumbai