Network Administrator

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
• 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

• Cisco LAN (Catalyst switches – L2/L3)
• Wireless (WLC, Access Points, RF troubleshooting)
• Firewalls (Cisco Firepower / ASA or equivalent)
• Cisco DNA Center (DNAC) – monitoring, assurance, compliance
• Cisco ISE – authentication, NAC, policy enforcement
• Proactively identify and fix network health and performance issues.
• Work closely with onsite OT/network plant teams for:
• Plant network dependencies
• Industrial connectivity issues
• Change coordination impacting production
• Provide IT-side inputs for IT/OT segmentation and security.
• Perform OT Network troubleshooting
• Execute Network changes (configurations, upgrades, patching)
• Perform New deployments and site expansions
• Ensure Proper risk assessment and rollback planning
• Changes executed during approved windows
• Manage EOL/EOS tracking and remediation.
• Implement and maintain Network segmentation
• Firewall policies and secure access controls
• Vulnerability remediation and patching
• Security incident investigation
• Coordinate with OEM TAC (Cisco, firewall vendors)
• Create, Update and Maintain Network diagrams and configurations o IP address management
• Create, Update and Maintain SOPs/runbooks
• 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. #LI-SV2 #LI-KUMARAN </div

Qualifications

BACHELOR OF COMPUTER SCIENCE