Sapiens est une Entreprise de Services Numériques (ESN), située à proximité de la gare Saint-Lazare, spécialisée dans les métiers de l?ingénierie informatique, structuré autour de la Digitalisation, les infrastructures et Cybersécurité du système d?information.   ·       Agilité et organisation de la DSI ·       Etude & Développement ·       Infrastructure et production ·       Sécurité et Cybersécurité   Sapiens accompagne ses clients dans le développement et la transformation de leurs activités depuis 2003, en nous positionnant sur des projets à forte valeur ajoutée dans des secteurs stratégiques (Grands comptes et ETI) tels que la banque de financement et d?investissement, l?assurance, les médias, l?industrie et le luxe.   Rejoindre Sapiens, c?est intégrer une société qui valorise tes compétences, soutient ton potentiel et t?offre l?opportunité de relever de nouveaux défis au sein d?équipes dynamiques et passionnées. Nous recherchons plusieurs profils de Expert Active Directory - Villeneuve d'Ascq H/F pour notre client grand compte dans le secteur de l'audiovisuel. ContextSupport for BUILD Entra ID Expert Strong project constraint International environment ? fluent English required Deliverables: confirmed experience on large-scale Microsoft Entra ID migration programs International / multi-country context Confirmed experience on large-scale Microsoft 365 migration programs International / multi-country context MissionsMaintain and optimize the existing Active Directory infrastructure, ensuring security, integrity, and compliance Consolidate and standardize systems, manage obsolescence, and protect the environment against security breaches Maintain a high level of security and ensure compliance Technical tasks: In-depth expertise in Active Directory (AD): design, configuration, management of multi-domain environments, Group Policy Objects (GPO), federation, trusts, etc. Experience with identity and access management (IAM): authentication, authorization, account management, passwords, LDAP, Kerberos, SAML protocols PKI (Public Key Infrastructure): management of certificates, Certification Authorities, and related security practices AD security and auditing: vulnerability detection, secure configuration, audit tools (e.g., PingCastle, BloodHound, etc.) Scripting and automation: PowerShell, scripts for managing, maintaining, and deploying AD components Migration and upgrade management: planning migrations, consolidations, and environment updates Knowledge of other Microsoft components: DNS, DHCP, Exchange, WSUS, etc. Management of Managed Service Accounts (MSA) & Group Managed Service Accounts (GMSA): creation, deployment, management, and best practices for securing and automating service accounts Understanding security standards and compliance regulations: GDPR, ISO/IEC 27001, etc. Methodological tasks: Technical project management: planning, implementation, documentation, and change management Risk analysis and vulnerability management: ability to identify, analyze, and remediate security weaknesses Compliance management: conducting regular audits, reporting, and certification processes Advanced troubleshooting and diagnostic skills: resolving complex AD-related incidents Interpersonal and soft tasks: Effective communication: explaining technical concepts to non-technical stakeholders Analytical and synthesis skills: quickly understanding technical challenges and proposing solutions Proactivity and autonomy: anticipating security and performance issues before they arise Teamwork and mentoring: sharing best practices and training colleagues Customer-oriented mindset and service awareness: understanding business needs and delivering tailored solutions Tools & EnvironmentMicrosoft Entra ID (Expert level) Active Directory and GPO (Expert level) PowerShell scripting Audit tools such as PingCastle, BloodHound Microsoft components: DNS, DHCP, Exchange, WSUS Security standards: GDPR, ISO/IEC 27001