Walk-in | Network Security Administrator

Tata Consultancy Services; Chennai District; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

Tata Consultancy Services (TCS) is seeking a Network Security professional for Chennai to support global retail networks. The role requires 5–15 years of experience in security, with hands-on expertise in network infrastructure, Zscaler, and cloud security across AWS/Azure/GCP.

Strong TCP/IP and protocol knowledge is essential, with ITIL-aligned incident and change handling experience. The position is based in Chennai at the Magnum IT SEZ campus with on-site interview.

Qualifications

• Total experience 5–15 years in network security.
• Strong knowledge of network protocols and security technologies.
• Experience with firewalls, VPNs, IDS/IPS, and cloud security.
• Certifications such as CISSP/CEH/CISM are desirable.

Skills

Network security

Routing

Switching

LAN

WAN

Zscaler

Tools

Zscaler

AWS

Azure

GCP

Job description

Dear Professionals ,

TCS is Hiring For Network Security

Total Experience -5Years-15Years

Rel Exp-5Years

Skills -, Network Security, Routing ,switching, LAN,WAN, Network Security

Location - Chennai(TCS Magnum Chennai One IT SEZ Phase-2 on the 200 Feet Radial Road in Thoraipakkam, Chennai)

Interview -Mode -Face2Face

Interview Date:-5-th-Sep-2026

Must Have:

Network Securitywho supports Network infrastructure for retail customer across globe having6to10+years of experience insecurity domain
Good Knowledge and Hands on Experiencewith network security technologiesStrong understanding of network protocols and architectureKnowledge of encryption protocols and security methodologiesIn-depth knowledge of TCP/IP, HTTP, DNS, and other protocols to diagnose issues at different layers of the network stack
Knowledge onZscaler security services, including web filtering, SSL inspection, and sandboxing,Certifications such as CISSP, CEH, CISM, or equivalentarehighly desirableExperience with network security technologies (e.g., firewalls, IDS/IPS, VPNs)Regular validation ofpatches and updates to security systems Administer andoptimizeZscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) configurations.Manage user policies, authentication methods, and application access through Zscaler.Experience with security incident response and forensic analysis.Good understanding of Incident, Asset, Problem and Change Management (ITIL)Experience in cloud security and technologies (e.g., AWS, Azure, GCP)Knowledge of scripting and automation tools (e.g., Python, PowerShell)Keepup-to-datewith the latest security trends, threats, and technologies toanticipateand mitigate new types of security incidents
Interested to work on 24/7 Operational supportCommunicate effectively with stakeholders, explaining technical issues and their implications in a way that is understandable to non-technical audiences