Job Location- Pune/ Chennai /n Experience Range- 6-12 Years /n Summary /n 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. /n Core responsibilities /n /n

- Understand Internet and Private Access (ZTNA) Requirements.

Define Network

Security / ZTNA standards, policies and procedures.

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- Produce detailed design documents and guide the implementation of features

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- Design the integration touch points of Internet and Private Access (IdP, firewalls, SD-WAN, EUC, SIEM, Log, Server Teams) and coordinate with respective groups

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- Deploy and manage ZTNA platforms to secure access to private apps

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- Configure strong authentication (MFA) and authorization policies based on user/device identity

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- Grant users access only to necessary applications, not the entire network

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- Isolate network segments to prevent lateral movement by attackers

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- Continuously assess device security (OS, antivirus status) before granting access.

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- Define and enforce granular, context-aware policies (user, location, time, device).

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- Create and implement test plans (including functionality, integrity, stress testing and definition of test methodologies and strategy)

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- Monitor user and device activity for threat anomalies and adapt security posture in real-time.

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- Involve in troubleshooting and complex problem resolutions

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- Troubleshooting GRE/IPSec tunnels related to users access

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- Guide and Coach teammates technically

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- Create and maintain documentation and diagrams

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- Must have implementation experience in one of the ZTNA/SSE technologies (Zscaler, Netskope, Prisma Access, Cloudflare)

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- Or Must have implementation experience in one of the Network Security Firewalls (Palo alto, Forti, Juniper, Cisco ASA, Checkpoint) and/or Routing, Switching, Wireless (WAP,WLC)

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- Bachelor's degree in technical or engineering, or computer science or equivalent experience

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- 6+ years of experience supporting network and network security environments.

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- Deep understanding of Zero Trust (ZTNA) and SASE concepts and architectures.

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- Strong grasp of networking fundamentals (TCP/IP, DNS, HTTP, routing) and hybrid cloud architectures (Azure, AWS, GCP).

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- Hands-on experience with security technologies like Secure Web Gateway (SWG), CASB, DLP, firewalls, and VPN alternatives.

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- Ability to work in a fast-paced, high pressure, constantly changing setting.

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- Experience in managing and driving complex global and regional projects with multiple functional teams

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- Experience in security practices and methodologies including SSL/TLS encryption, Sandbox and Advanced threat protections.

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- Knowledge and Experience in Authentication concepts of users (SAML, MFA and SSO).

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- Certification and/or training with vendor-neutral or vendor-specific focus

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- Excellent written and oral communication skills to technical and non-technical staff

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- Excellent time management and organization skills

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