Job Location- Pune/ Chennai
Experience Range- 6-12 Years

Summary
As a Senior Network Security / ZTNA Engineer, you are responsible and play a critical role in designing, implementing and managing network secure access to applications by verifying users and devices, enforcing least-privilege access, micro-segmenting networks, and continuously monitoring for threats, focusing on identity-based policies across regions.
Core responsibilities
Understand Internet and Private Access (ZTNA) Requirements. Define Network Security / ZTNA standards, policies and procedures.
Produce detailed design documents and guide the implementation of features
Design the integration touch points of Internet and Private Access (IdP, firewalls, SD-WAN, EUC, SIEM, Log, Server Teams) and coordinate with respective groups
Deploy and manage ZTNA platforms to secure access to private apps
Configure robust authentication (MFA) and authorization policies based on user/device identity
Grant users access only to necessary applications, not the entire network




Isolate network segments to prevent lateral movement by attackers
Continuously assess device security (OS, antivirus status) before granting access.
Define and enforce granular, context-aware policies (user, location, time, device).
Create and implement test plans (including functionality, integrity, stress testing and definition of test methodologies and strategy)
Monitor user and device activity for threat anomalies and adapt security posture in real-time.
Involve in troubleshooting and complex problem resolutions
Troubleshooting GRE/IPSec tunnels related to users access
Guide and Coach teammates technically
Create and maintain documentation and diagrams
Required Qualifications
Must have implementation experience in one of the ZTNA/SSE technologies (Zscaler, Netskope, Prisma Access, Cloudflare)
Or Must have implementation experience in one of the Network Security Firewalls (Palo alto, Forti, Juniper, Cisco ASA, Checkpoint) and/or Routing, Switc

📌 Zscaler Senior Engineer (Chennai)
🏢 Tata Consultancy Services
📍 Chennai