Network Administrator 2

Job Description: Network Administrator (L2)

Level: L2 Administrator / Senior Analyst

About the Role

The Network Administrator will be part of a 24x7 Infrastructure Operations team responsible for the administration, monitoring, troubleshooting, and maintenance of enterprise network environments. The role focuses on ensuring network availability, performance, security, and compliance with service-level agreements. The administrator will support LAN, WAN, Data Center, and Campus networking infrastructure while collaborating with internal teams and vendors.

Key Responsibilities

• Monitor and manage enterprise network infrastructure in a 24x7 environment.
• Troubleshoot and resolve network incidents, service requests, and escalations within SLA.
• Administer and support routers, switches, and wireless infrastructure.
• Configure and maintain VLANs, routing, switching, and network security policies.
• Perform network health checks, performance monitoring, and capacity planning.
• Implement approved network changes, upgrades, and maintenance activities.
• Participate in incident, problem and change management processes.
• Coordinate with vendors and cross-functional teams for issue resolution.
• Maintain network documentation, topology diagrams, and operational procedures.
• Support disaster recovery and business continuity activities related to network infrastructure.

Educational Qualification

• Bachelor's Degree in Engineering, Computer Science, Information Technology, or equivalent.

Experience

• 4 to 7 years of experience in Network Administration and Operations Support.

Required Technical Skills

Networking

• Strong understanding of:

• TCP/IP

• OSI Model

• Routing & Switching

• VLANs

• STP/RSTP/MSTP

• OSPF, BGP, EIGRP

• DHCP, DNS, NAT

• High Availability Technologies (HSRP, VRRP)

Network Security

• Basic administration and troubleshooting of:

• Firewalls

• Access Control Lists (ACLs)

• VPN Technologies (IPSec, SSL VPN)

• Network Security Best Practices

Wireless Technologies

• Experience supporting:

• Enterprise Wireless LAN

• Access Points

• Wireless Controllers

Monitoring & Management Tools

• Knowledge of:

• SolarWinds

• PRTG

• Nagios

• ServiceNow

• Network Performance Monitoring Tools

Vendor Technologies

• Hands-on experience with one or more of:

• Cisco Routers & Switches

• Aruba Switching & Wireless

• HPE Networking

• Juniper Networks

Operational Responsibilities

• Analyze network alerts and proactively resolve issues.
• Perform firmware upgrades and patch management activities.
• Conduct root cause analysis for recurring network issues.
• Implement and validate network changes with rollback planning.
• Ensure CMDB and asset information remain updated.
• Prepare and maintain operational and performance reports.

Desired Skills

• CCNA / CCNP certification preferred.
• Aruba Certified Associate or equivalent certification.
• ITIL Foundation Certification.
• Knowledge of SD-WAN technologies.
• Exposure to Cloud Networking (Azure/AWS) is an added advantage.

Behavioral & Interpersonal Skills

• Strong troubleshooting and analytical skills.
• Excellent verbal and written communication.
• Customer-focused approach with high ownership and accountability.
• Ability to work independently in rotational shifts.
• Strong teamwork and collaboration skills.
• Ability to handle critical incidents in high-pressure environments.

Preferred Technology Exposure

Routing & Switching

• Cisco Catalyst Series
• Cisco Nexus Series
• Aruba CX Switches
• HPE Networking

Security

• Cisco ASA
• Palo Alto
• Fortinet

Wireless

• Aruba Wireless
• Cisco Wireless LAN Controllers

Monitoring Tools

• SolarWinds
• PRTG
• ServiceNow

Operating Systems

• Windows Server
• Linux