Walk-in || Network Administrator

TCS inviting Applicants for the Walk-In Drive!

Role: Network Administrator

Experience: 7-10 yrs

Location: ChennaiDrive

Date: 22nd August 2026

SPOC: Divya Mukundan
Walk-In Venue:Tata Consultancy Services (TCS) Magnum block , Chennai One IT SEZ (Phase II) on the 200 Feet Radial Road, spanning MCN Nagar Extension, Pallavaram-Thoraipakkam, Chennai, Tamil Nadu, PIN 600097

About TCS Cloud

TCS Cloud is accelerating the shift to an AI-powered, cloud-first future. As a strategic transformation partner to the world's leading enterprises, it is helping businesses reimagine their core, modernise platforms, unlock data-driven intelligence, and scale innovation through cloud, AI, cybersecurity, automation, and digital engineering. By combining deep industry expertise with cutting-edge technologies, TCS Cloud is enabling the rise of agile, resilient, and intelligent enterprises built to thrive in a rapidly evolving digital world.

About the Role

We are seeking an experienced Senior Network Administrator / Senior Network Engineer to support and manage a global 24x7 enterprise network environment across US and APAC regions. The ideal candidate will possess deep expertise in network infrastructure, security, cloud networking, firewalls, routing, switching, and application delivery technologies within a highly available financial services environment.

This role will work closely with NOC, Systems Operations, Database, and Helpdesk teams to design, deploy, manage, and troubleshoot critical production infrastructure supporting real-time transaction processing and enterprise operations.

Key Responsibilities

• Design, implement, maintain, and support enterprise LAN/WAN and cloud networking environments.
• Manage VPN (IPSEC/SSL), MPLS, SD-WAN, leased lines, and partner connectivity.
• Administer and troubleshoot advanced routing and switching technologies including BGP, OSPF, QoS, and multicast.
• Configure and manage next-generation firewalls and security solutions.
• Manage SSL/TLS certificates and network security controls.
• Support application delivery across Development, QA, UAT, and Production environments.
• Perform network performance monitoring, capacity planning, and optimization.
• Manage circuits, vendors, ISPs, and third-party partner relationships.
• Conduct network security assessments and implement best practices.
• Deploy and support physical servers, virtual environments, and data communication infrastructure.
• Participate in infrastructure planning, architecture reviews, and technology strategy discussions.
• Provide incident management, troubleshooting, and on-call support when required.

Required Skills :

Networking

• Strong expertise in:
• LAN/WAN
• MPLS
• QoS
• Multicast
• TCP/IP
• BGP
• OSPF
• SD-WAN
• VPN (IPSEC & SSL)

Security & Firewalls

• Hands-on experience with:
• Palo Alto
• Fortinet/FortiGate
• Check Point
• Cisco Security Solutions
• SonicWall

Routing & Switching

• Advanced expertise in:
• Cisco Switches (2K/5K/7K/9K Series)
• Juniper Switching & Routing

Application Delivery & Network Services

• F5 LTM/GTM
• Citrix
• Riverbed
• Infoblox DDI
• DNS & IPAM
• WAF (Web Application Firewall)

Cloud & Infrastructure

• Public, Private & Hybrid Cloud
• Containers
• Hyper-Converged Infrastructure
• High Availability Solutions
• Data Center Networking

Desired Qualifications

• 7-10 years of enterprise network engineering/administration experience.
• Strong OSI Layer 1-7 troubleshooting and packet flow analysis skills.
• Experience supporting PCI-DSS compliant environments is highly preferred.
• Knowledge of Wireless Controllers, Access Points, NAC, and Network Monitoring tools.
• Excellent problem-solving, communication, and stakeholder management skills.
• Ability to work effectively in a global, fast-paced environment.

Documents to carry (Mandatory):

1. Hardcopy of the updated resume

2.Xerox of a Government ID proof (Aadhar/PAN only)

3.Passport Size Photograph