Active Directory & Infrastructure Security Expert

Join HCLTech! HCLTech is a global tech company with 225,000+ HCLTechies across 60 countries, offering digital, engineering, and cloud solutions. Serving major industries like Financial Services, Manufacturing, Healthcare, Telecom, and more, its 12-month revenue ending September 2024 was $13 billion. HCLTech France: +500 HCLTechies. Offices: Paris, Lyon, Toulouse and Blagnac. We are seeking for an Active Directory & Infrastructure Security Expert to fill multiple position to join our team at a client’s facility in Paris, Île-de-France, France. Important details 3-4 days onsite Language: French (C1) + English (B2) Years of experience: 12+years 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 environment spans more than 43 countries and is based on Microsoft hybrid solutions. The consultant will contribute to improving the quality and security of IT systems, managing AD infrastructure evolution, handling backlog management, and supporting 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 Windows Server (MS Windows Server — General Administration & Hardening) PowerShell — Scripting, maintenance, transformation, and automation PKI — Certificate lifecycle management 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 Ready for a new challenge? Join a friendly, multinational company offering endless opportunities in a dynamic, multicultural environment. Apply now and submit your CV in English! Why become an HCLTechie? At HCLTech, we offer diverse opportunities to learn, innovate, and fast-track your career. You'll work with global clients and industry-leading experts, gaining access to mentorship and rewarding growth paths. Our people-friendly work culture fosters flexibility, leadership, and personal and professional growth, giving you the freedom to explore, experiment, and thrive. We believe in doing things differently, offering hands-on training and coaching, and celebrating the passion and commitment of our teams. Discover the benefits of joining HCLTech: Comprehensive benefits package. 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 like our CSR Council, Diversity Council, Women Connect, and many more.