Network Administrator - 426313

Job Description

Must Have Technical/Functional Skills

Enterprise IT Network

Cisco Switching: Catalyst (L2/L3)

Cisco Wireless: WLC, Access Points

Firewalls: Cisco Firepower / ASA (or equivalent)

Cisco DNA Center (DNAC)

Cisco ISE (NAC, authentication)

Core Networking

TCP/IP, VLANs, VXLAN,

Routing (OSPF/BGP)

NAT, ACLs, segmentation

OT Awareness (Good to Have)

Basic understanding of:

o IT/OT segmentation

o Industrial environments

o OT security concepts

Roles & Responsibilities

Act as the primary SME for all IT network related incidents.

Perform end-to-end troubleshooting and resolution independently

Handle high-severity and production-impacting incidents with full ownership.

Perform deep root cause analysis (RCA) and implement permanent fixes.

Manage and support Enterprise IT Network:

o Cisco LAN (Catalyst switches L2/L3)

o Wireless (WLC, Access Points, RF troubleshooting)

o Firewalls (Cisco Firepower / ASA or equivalent)

o Cisco DNA Center (DNAC) monitoring, assurance, compliance

o Cisco ISE authentication, NAC, policy enforcement

o Proactively identify and fix network health and performance issues.

o Work closely with onsite OT/network plant teams for:

Plant network dependencies

Industrial connectivity issues

Change coordination impacting production

o Provide IT-side inputs for IT/OT segmentation and security.

o Perform OT Network troubleshooting

o Execute Network changes (configurations, upgrades, patching)

o Perform New deployments and site expansions

o Ensure Proper risk assessment and rollback planning

o Changes executed during approved windows

o Manage EOL/EOS tracking and remediation.

o Implement and maintain Network segmentation

o Firewall policies and secure access controls

o Vulnerability remediation and patching

o Security incident investigation

o Coordinate with OEM TAC (Cisco, firewall vendors)

o Create, Update and Maintain Network diagrams and configurations

o IP address management

o Create, Update and Maintain SOPs/runbooks

o Ensure accurate ITSM updates and audit compliance.

Generic Managerial Skills, If any

Strong ownership mindset and ability to work independently is critical

Excellent troubleshooting and analytical skills

Ability to handle production-critical situations under pressure

Clear communication with IT, OT, and business stakeholders

High discipline in documentation and change processes