Senior - Zero Trust Network Access

EY; Bengaluru; On-site; INR 4,000,000 - 6,500,000; Full time

Job summary

EY seeks a Senior Zero Trust Network Access (ZTNA) Engineer to architect, deploy, and manage modern identity-centric perimeter security. This role focuses on replacing legacy VPN architectures with least-privilege, context-aware access controls and strong device posture checks.

The candidate will integrate ZTNA platforms with IdPs, enforce MFA, and secure hybrid enterprise applications across on‑prem, AWS, Azure, and GCP environments, collaborating with IT teams.

Qualifications

• 35 years of dedicated experience in network security, IAM, or zero trust architecture.

Responsibilities

• Assess existing remote access models and legacy VPNs to map micro-segmentation and least-privilege policies.
• Build context-aware access policies combining identity, device health, location, and risk scores.
• Deploy, configure, and manage enterprise ZTNA solutions across data centers, AWS, Azure, and GCP.
• Integrate ZTNA with SSO and Directory Services (Entra ID/Azure AD, Okta).
• Drive migration from legacy VPN to ZTNA with minimal disruption; coordinate UAT with owners.
• Develop architecture diagrams, runbooks, and guides for support desks.
• Lead enablement sessions for IT teams on ZTNA client troubleshooting and policy management.
• Monitor connectivity, policy health, and SIEM telemetry for security and compliance.

Skills

ZTNA platforms

IAM & MFA

SAML/OIDC

Networking fundamentals

Policy governance

Education

Vendor cloud security certifications

Tools

Zscaler ZPA

Palo Alto Prisma Access

Cloudflare One

Microsoft Entra ID/Azure AD

Job description

Job Summary

Job Description: Senior Zero Trust Network Access (ZTNA) Engineer

Experience Level: 35 Years

Role Type: Full-Time

Role Overview

We are seeking a Senior Zero Trust Network Access (ZTNA) Engineer to architect, deploy, and manage our modern identity-centric perimeter security solutions. Spanning the complete service delivery lifecycle - Assess, Build, Transition, and Operations - this role is pivotal in replacing legacy VPN architectures with least-privilege, context-aware access controls. The ideal candidate will have hands‑on experience integrating ZTNA platforms with enterprise Identity Providers (IdP), enforcing device posture checks, and securing hybrid enterprise applications.

Key Responsibilities

Assess (Architecture Review & Posture Analysis)

• Conduct comprehensive audits of existing remote access models, legacy VPN concentrators, and internal application exposure.
• Analyze user access patterns, application dependencies, and data flows to map out micro‑segmentation and least‑privilege policies.
• Evaluate current Identity Provider (IdP) readiness, multi‑factor authentication (MFA) enforcement, and endpoint device posture compliance mechanisms.

Build (Deployment & Policy Engineering)

• Deploy, configure, and manage enterprise ZTNA solutions (e.g., Zscaler ZPA, Palo Alto Prisma Access, Cloudflare One, or Cisco Secure Access).
• Design and implement context‑aware access policies combining user identity, device health, location, and risk scores.
• Provision and configure ZTNA connectors (gateways/brokers) across on‑premise data centers, AWS, Azure, and GCP environments.
• Integrate ZTNA platforms with enterprise Single Sign-On (SSO) and Directory Services (e.g., Entra ID/Azure AD, Okta).

Transition (Migration, Testing & Handover)

• Drive the phased migration roadmap from legacy VPN solutions to ZTNA with minimal disruption to business units.
• Coordinate User Acceptance Testing (UAT) with business application owners to validate seamless context‑based access.
• Develop "As-Built" architecture diagrams, policy migration runbooks, and troubleshooting guides for support desks.
• Conduct enablement sessions for IT helpdesks and operations teams on ZTNA client troubleshooting and policy management.

Operations & Continuous Management

• Serve as the senior escalation point for complex ZTNA connectivity, identity assertion, and connector health issues.
• Perform continuous policy lifecycle management, reviewing access rules, removing stale policies, and refining posture checks.
• Monitor ZTNA tunnel performance, broker throughput, and client app stability across global endpoints.
• Ensure real‑time security telemetry and access logs stream successfully into the SIEM for threat hunting and compliance monitoring.
• Understanding of ITIL-based Change Management, managing end‑to‑end change lifecycle activities, CAB coordination, and compliant implementation of infrastructure and application changes.

Required Skills & Qualifications

• Experience: 35 years of dedicated experience in network security, identity and access management (IAM), or zero trust architecture implementation.
• Core Technologies: Hands‑on expertise with market‑leading ZTNA platforms (e.g., Zscaler Private Access, Palo Alto Prisma Access, Cloudflare One, or Microsoft Global Secure Access).
• Identity & Networking: Strong grasp of IAM principles, SAML/OIDC authentication protocols, Active Directory/Entra ID, and foundational networking (DNS, TCP/IP, routing, firewalls).
• Zero Trust Principles: Deep understanding of "Never Trust, Always Verify" paradigms, micro‑segmentation, and device posture validation frameworks.
• Certifications: Relevant vendor or cloud security certifications (e.g., Zscaler Certified Cloud Security Professional, PCNSE, AWS/Azure Security, or CISSP/CCSP) are highly preferred.
• Soft Skills: Strong cross‑functional collaboration skills, ability to manage enterprise‑wide change initiatives, and excellent technical documentation capabilities.