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# Network Administrator

- **Company:** Tata Consultancy Services Limited
- **Location:** Blue Bell, PA, United States
- **Salary:** $120,000 - $130,000
- **Contract:** Permanent contract
- **Skills:** Access Control List, User Authentication, Border Gateway Protocol, Catalyst (Software), Cisco PIX, IT Management, IP Address Management, Network Troubleshooting, Network Layer, Network Configuration and Change Management, Network Diagrams, Routing, Network Segmentation, Open Shortest Path First (OSPF), Overlay Transport Virtualization, Runbook, TCP/IP, Virtual Local Area Networks, Software Vulnerability Management, Wireless Access Point, Wireless Networks, Wireless LAN Controllers, Identity Services Engine, Network Access Control, Computer Network Technologies, Firewalls (Computer Science), Information Technology, Firepower, Firewall Services Module, Cisco
- **Published:** November 5, 2026
- **Apply:** https://diversityjobs.com/career/18843975/Network-Administrator-Pennsylvania-Blue-Bell

## About the Role

* Excellent troubleshooting and analytical skills
 * Ability to manage production-critical situations under pressure
 * Clear communication with IT, OT, and business stakeholders
 * High discipline in documentation and change-management processes., BACHELOR OF COMPUTER SCIENCE

## Description

Must-Have Technical and Functional Skills
Enterprise IT Network

 * Cisco switching: Catalyst (Layer 2/Layer 3)
 * Cisco wireless: Wireless LAN Controllers (WLCs) and access points
 * Firewalls: Cisco Firepower, Cisco ASA, or equivalent
 * Cisco DNA Center (DNAC)
 * Cisco Identity Services Engine (ISE): network access control and authentication
Core Networking

 * TCP/IP, VLANs, and VXLAN
 * Routing protocols, including OSPF and BGP
 * NAT, access control lists (ACLs), and network segmentation
OT Awareness - Good to Have
Basic understanding of:
*
IT/OT segmentation
*
Industrial environments

 * OT security concepts
Roles and Responsibilities

 * Act as the primary subject-matter expert for IT network-related incidents.
 * Perform end-to-end troubleshooting and independently resolve network issues.
 * Take full ownership of high-severity and production-impacting incidents.
 * Perform detailed root cause analysis and implement permanent corrective actions.
 * Manage and support Cisco LAN infrastructure, including Catalyst Layer 2 and Layer 3 switches.
 * Support wireless infrastructure, including WLCs, access points, and radio-frequency troubleshooting.
 * Support Cisco Firepower, Cisco ASA, or equivalent firewall platforms.
 * Use Cisco DNA Center for monitoring, assurance, and compliance activities.
 * Administer Cisco ISE authentication, network access control, and policy enforcement.
 * Proactively identify and remediate network health and performance issues.
 * Work with onsite OT and plant network teams on plant network dependencies, industrial connectivity issues, and
production-impacting change coordination.

 * Provide IT-side input for IT/OT segmentation and security.
 * Collaborate with onsite OT and plant network teams to troubleshoot network issues affecting industrial
connectivity.

 * Execute network configuration changes, upgrades, and patching during approved change windows.
 * Support new deployments and site expansions.
 * Perform risk assessments and prepare rollback plans for network changes.
 * Track hardware and software end-of-life and end-of-support status and coordinate remediation.
*
Implement and maintain network segmentation, firewall policies, and secure access controls.

 * Perform vulnerability remediation, patching, and security incident investigation.
 * Coordinate technical support cases with Cisco TAC and other firewall vendors.
 * Create, update, and maintain network diagrams, configuration records, IP address management data, SOPs, and
runbooks.

 * Maintain accurate IT service management records and support audit compliance.
Managerial Skills

 * Strong ownership mindset and ability to work independently