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# Expert Microsoft PKI / AD CS - Migration d'autorités de certification H/F

- **Company:** Direct Emploi
- **Location:** Lyon, France (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Access, Active Directory, Amazon Web Services, Amazon Elastic Compute Cloud, Databases, Domain Name System (DNS), Windows Servers, Public Key Infrastructure, Windows PowerShell
- **Published:** September 11, 2026
- **Apply:** https://nostalentsnosemplois.auvergnerhonealpes.fr/candidat/offres/offre-d-emploi-expert-microsoft-h-f-lyon-auvergne-rhone-alpes-independant-franchise-16409554

## About the Role

Microsoft PKI, Active Directory Certificate Services (AD CS)

 - Enterprise Subordinate Certification Authority, Issuing CA/Subordinate CA, Offline Root CA
 - Windows Server 2016, Windows Server 2025, AWS EC2 (instances t3a.large)
 - Active Directory, Certificate Templates, bases de données AD CS, clés privées
 - CRL, CDP, AIA, OCSP, Certutil, PowerShell
 - DNS, réseau et règles de sécurité AWS

## Description

Vous interviendrez sur la modernisation et la migration d'une infrastructure PKI Microsoft pour le compte d'un grand compte. Vous serez responsable de la migration de deux autorités de certification Microsoft existantes vers un nouvel environnement hébergé sur AWS, garantissant la continuité de service et la sécurité des infrastructures.
Missions principales :

 - Analyser l'architecture et la configuration actuelles des autorités de certification Microsoft (TechnicalCA et WorkspaceCA)
 - Préparer l'environnement cible sur Windows Server 2025 dans AWS
 - Sauvegarder et restaurer les bases de données AD CS
 - Migrer les clés privées et certificats des autorités
 - Maintenir la chaîne de confiance existante
 - Migrer les modèles de certificats (Certificate Templates)
 - Vérifier les publications CRL (Certificate Revocation List) et AIA (Authority Information Access)
 - Contrôler la configuration OCSP et les Online Responders
 - Limiter l'indisponibilité durant la bascule
 - Réaliser les tests de bon fonctionnement après migration
 - Documenter l'ensemble des opérations réalisées
 - Prévoir et rédiger une procédure de retour arrière
Environnement technique


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