Active Directory & Infrastructure Security Expert

HCLTech is a global technology solutions provider.

Active Directory & Infrastructure Security Expert

Location: Paris, Île‑de‑France, France

Years of experience: 12+ yearsOnsite days per week: 3‑4 days

Overview

The mission focuses on providing expert‑level Identity and Active Directory (AD) expertise within a large‑scale international organisation undergoing significant digital transformation. The workplace spans more than 43 countries and adopts Microsoft hybrid solutions. The consultant will improve the quality and security of IT systems, manage AD infrastructure evolution, handle backlog management, and support N2 entities while ensuring continuity and transformation within a complex multi‑tenant Microsoft ecosystem.

Responsibilities

• Lead and contribute to transformation and integration projects related to Identity and Active Directory infrastructure.
• Improve the security posture of AD infrastructures, manage MCO activities, and drive the evolution of Identity/AD environments.
• Manage the backlog of tickets including Incidents (INC), Requests (REQ), Changes, and other operational items.
• Provide technical assistance and support to N2 entities across the organisation.
• Deliver weekly status reports and synthesise ongoing actions and progress updates.
• Drive inter‑tenant migration expertise as part of the broader transformation roadmap.
• Develop and maintain PowerShell scripts for transformation, maintenance, and automation purposes.
• Manage and maintain PKI (certificate management) and document classification solutions (AIP).

Mandatory Skills

• Active Directory (AD) – Architecture, Administration & Security
• Microsoft Azure – Integration and transversal connectivity with Microsoft products
• PowerShell – Scripting, maintenance, transformation, and automation
• Microsoft 365 Suite – Exchange Online, OneDrive, SharePoint, O365
• DNS & DHCP – Windows‑based network services management
• AIP (Azure Information Protection) – Document classification and labelling
• Inter‑Tenant Migration – Planning and execution in Microsoft environments
• Identity & Access Management (IAM) – Governance and transformation

Specific Requirements

• Experience working in large‑scale, multi‑country hybrid Microsoft environments (43+ countries scope preferred)
• Proven ability to manage complex AD transformation and integration projects end‑to‑end
• Ability to produce technical documentation: DAT, User Guides, Installation Guides, and operational procedures
• Strong capacity to manage multiple workstreams simultaneously across transformation and production contexts
• No subcontracting permitted – direct expertise engagement required

Appreciated Skills

• Experience with Microsoft hybrid cloud architecture and Azure AD Connect
• Knowledge of security frameworks applicable to Identity and AD environments
• Experience in backlog management tools and ITSM platforms
• Familiarity with multi‑tenant Microsoft 365 governance and compliance policies

Benefits

• Global career opportunities and mobility.
• Flexible work environment supporting work‑life balance.
• Exciting projects and upskilling opportunities to shape your role.
• Total wellbeing focus: Beyond professional growth, you’ll be able to collaborate with like‑minded colleagues to drive meaningful impact through initiatives such as our CSR Council, Diversity Council, Women Connect, and many more.