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Ernst & Young

Global professional services: consulting, assurance, tax

Senior Consultant - Active Directory & Entra ID Expert

Security Engineering & ArchitectureUpdated on Nov 14
Full-timeWarsaw, PolandNo salary listed

About the Job

Requirements

  • At least 5 years of hands-on experience in Microsoft Entra ID and enterprise identity and access management solutions, preferably in complex or hybrid environments.
  • Strong expertise in Microsoft Entra ID, including Conditional Access design and policy modelling, multifactor and passwordless authentication, Identity Protection and risk-based controls, and role-based access control and least-privilege models.
  • Solid understanding of identity lifecycle management, governance concepts, and Zero Trust architecture.
  • Proven experience with hybrid identity scenarios, including Microsoft Entra Connect or Cloud Sync, synchronization and coexistence troubleshooting, and hybrid authentication flows.
  • Good working knowledge of Active Directory, including Active Directory Domain Services fundamentals, Group Policy, Active Directory replication, Domain Name System, Flexible Single Master Operations roles, and trusts.
  • Understanding of modern authentication and federation protocols, including OAuth 2.0, OpenID Connect, and Security Assertion Markup Language.
  • Experience working in consulting or professional services environments.
  • Strong communication skills and ability to engage effectively with technical and non-technical stakeholders.

Responsibilities

  • Design, implement, administer, and optimize Microsoft Entra ID-centric identity solutions in cloud-first and hybrid environments, with on-premises Active Directory as a supporting component.
  • Lead and deliver modern identity and access management solutions based on Microsoft Entra ID, aligned with Zero Trust principles.
  • Implement and manage modern authentication and authorization capabilities, including Conditional Access, multifactor and passwordless authentication, Identity Protection, and risk-based access controls.
  • Design and deploy Identity Governance and Administration capabilities within Entra ID, including Joiner/Mover/Leaver processes, access packages and access reviews, and Privileged Identity Management.
  • Design, implement, and support hybrid identity architectures, including synchronization and coexistence scenarios between Entra ID and on-premises Active Directory.
  • Support identity transformation initiatives, including transitions from legacy Active Directory-centric models to cloud-based identity, Active Directory rationalization, cleanup and consolidation as part of Entra ID adoption, and reduction of legacy authentication protocols and technical debt.
  • Provide guidance and hands-on support in Active Directory where required, including Active Directory Domain Services administration for users, groups, and computers; Group Policy design and troubleshooting; organizational unit structure and delegation of administration; and Domain Name System and replication health monitoring.
  • Support identity security and posture improvement activities, including Active Directory and Entra ID security hardening, tiering models and privileged access controls, health checks, risk assessments, and remediation planning.
  • Collaborate with cloud, security, and infrastructure teams to deliver end-to-end identity solutions.
  • Act as a technical lead and subject matter expert during client engagements, workshops, and architecture discussions.
  • Mentor junior consultants and contribute to internal EY standards, accelerators, and best practices.
  • Use EYQ and other artificial intelligence-powered tools to enhance analyses, insights, and solution design for clients.

Desired Qualifications

  • Microsoft certifications such as SC-300, AZ-500, or MS-102.
  • Experience with Active Directory forest or domain migrations, consolidations, or carve-outs.
  • PowerShell scripting for Entra ID and Active Directory automation.
  • Experience with identity and Active Directory security tools such as Microsoft Defender for Identity, Purple Knight, or PingCastle.
  • Familiarity with regulatory and security frameworks, including ISO 27001, NIST, GDPR, and SOX.

About the Company

Ernst & Young

Global professional services: consulting, assurance, tax

EY (Ernst & Young) provides professional services at a global scale, offering consulting, assurance, tax, and transaction advisory services. It serves clients across industries such as technology, media, real estate, hospitality, and construction. Instead of selling a single product, EY works with clients through tailored engagements where cross-disciplinary teams analyze challenges, design strategies, perform audits, help with tax planning, and assist with mergers or divestitures. What sets EY apart is its worldwide reach and integrated service model, industry-specific expertise, and focus on responsible business practices like sustainability, cybersecurity, and workforce flexibility. EY’s goal is to help organizations improve performance, manage risk, and achieve sustainable growth while building a better working world.

Company size
5,001-10,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Boston, MA
Founded
1991

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