Senior Zero Trust Network Access Engineer

Ernst & Young LLP ( EY India ); Bengaluru; On-site; INR 2,500,000 - 4,500,000; Full time

Benefits offered by this job

EY benefits

Job summary

EY is seeking a Senior Zero Trust Network Access (ZTNA) Engineer to architect, deploy, and manage modern identity-centric perimeter security across on-prem and cloud environments. You will replace legacy VPNs with context-aware access controls and integrate with IdPs.

The role covers assessment, deployment, transition, and operations, requiring hands-on experience with ZTNA platforms, MFA enforcement, device posture, and secure hybrid app access, with responsibility for enterprise-wide policy

Qualifications

• 3–5 years of dedicated experience in network security, IAM, or zero trust architecture implementation.
• Core technologies include ZTNA platforms (Zscaler Private Access, Prisma Access, Cloudflare One, or Microsoft equivalents).
• Identity & networking: strong grasp of IAM, SAML/OIDC, Active Directory/Entra ID, DNS/TCP/IP basics.
• Zero Trust: knowledge of micro-segmentation, posture validation, and Never Trust, Always Verify.
• Certifications: vendor/cloud security certifications are highly preferred.

Responsibilities

• Assess architecture and posture; audit remote access models and legacy VPNs.
• Deploy and manage enterprise ZTNA solutions; design context-aware access policies.
• Lead migration from VPN to ZTNA with UAT and handover artifacts.
• Provide ongoing operations support; monitor policy lifecycle and security telemetry.

Skills

ZTNA platforms

IAM concepts

SAML/OIDC

Active Directory/Entra ID

Zero Trust principles

Certifications

Soft skills

Tools

Zscaler Private Access

Palo Alto Prisma Access

Cloudflare One

Microsoft Entra ID

Job description

GMS-Senior-Zero Trust Network Access At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you. And we’re counting on your unique voice and perspective to help EY become even better, too. Join us and build an exceptional experience for yourself, and a better working world for all.

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

Experience Level: 3–5 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 guidelines for support desks. Conduct enablement sessions on 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: 3–5 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.

EY | Building a better working world EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets. Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate. Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.

Experience Level Senior Level