Network Security Engineer

Dear Professionals ,

TCS is Hiring For Network Security Engineer Role for Chennai Location.

Total Experience -6+ years

Rel Exp-6 Years

Skills -Network Security Engineer, LAN, WAN, Palo Alto Firewalls

Location - TCS Magnum Block, Chennai One IT SEZ Phase-2, 200 Feet Radial Road, MCN Nagar Extension, Thoraipakkam, Chennai, Tamil Nadu 600097

Date -20th-June-2026

Interview -Mode -Face2Face

Must Have :

• Design, deploy, configure, and maintain Palo Alto Firewalls (PA series) across enterprise and data center environments.
• Manage firewall configurations including security policies, NAT rules, AppID, URL filtering, threat prevention, and decryption.
• Administer Panorama for centralized policy management, templates, and device groups.
• Conduct firewall rule reviews, optimization, and cleanup in line with leastprivilege principles.
• Troubleshoot complex traffic flow, policy enforcement, performance, and security issues using logs, packet captures, and monitoring tools.
• Implement and support VPN solutions including IPSec and GlobalProtect (sitetosite and remote access).
• Perform firewall upgrades, patches, hotfixes, and maintenance, coordinating with business stakeholders and CAB.
• Develop and maintain technical documentation, SOPs, and network diagrams.
• Work closely with security and compliance teams to ensure risk mitigation and adherence to security standards.
• Configure, administer, and support F5 BIGIP (LTM / GTM) environments.
• Manage Virtual Servers, Pools, iRules, Profiles, and Health Monitors.
• Troubleshoot application availability, traffic distribution, and failover issues.
• Support SSL offloading, persistence, and highavailability configurations.
• Perform upgrades, patching, and performance optimization activities.
• Design, implement, and support Data Center network infrastructure (Core, Aggregation, Access layers).
• Configure and manage Layer 2 / Layer 3 technologies including VLANs, STP, LACP, OSPF, BGP, VRRP/HSRP.
• Troubleshoot complex latency, packet drops, routing loops, and convergence issues.

• Act as L2 / L3 escalation point for critical P1/P2 Network incidents.
• Strong handson experience with Palo Alto NGFW configuration and operations
• Expertise in Panorama, Global Protect, Wildfire, and Threat Prevention subscriptions
• Solid networking fundamentals: TCP/IP, OSI, VLANs, routing (BGP, OSPF), NAT
• Experience in LAN/WAN, Data Center, and hybrid environments
• Handson with packet analysis and firewall log analysis (e.g., traffic flow troubleshooting)
• Ensure adherence to ITIL processes for Incident, Problem, and Change Management.
• Perform Root Cause Analysis (RCA) and implement permanent corrective actions.
• Experience in maintenance activities, upgrades, and change implementation

Thanks & Regards,

RITESH RAVI

HR Talent Acquisition Group || TCS NOIDA ||

Mail to: - riteshkumar.ravi2@tcs.com

TATA CONSULTANCY SERVICES ||Website: http://www.tcs.com ||