Network Administrator

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

Base Salary Range : $85,000 to $95,000 Per Annum

TCS Employee Benefits Summary:

Discretionary Annual Incentive.

Comprehensive Medical Coverage: Medical & Health, Dental & Vision, Disability Planning & Insurance, Pet Insurance Plans.

Family Support: Maternal & Parental Leaves.

Insurance Options: Auto & Home Insurance, Identity Theft Protection.

Convenience & Professional Growth: Commuter Benefits & Certification & Training Reimbursement.

Time Off: Vacation, Time Off, Sick Leave & Holidays.

Legal & Financial Assistance: Legal Assistance, 401K Plan, Performance Bonus, College Fund, Student Loan Refinancing.

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