Windows Infrastructure Administrator_Contract

2 weeks ago


Singapore NTT SINGAPORE PTE. LTD. Full time

Job Summary: We are looking for an experienced Windows Infrastructure Administrator to manage and support our Active Directory and Windows Server environments. This role involves maintaining secure authentication systems, integrating Microsoft 365, and ensuring high availability and performance across our infrastructure. Key Responsibilities: Manage Active Directory, including Group Policy, DNS, DHCP, and replication . Support Microsoft 365 integration and hybrid identity solutions. Configure and maintain ADFS and federation services for secure SSO. Administer Windows Server environments and Certificate Authority (CA). Design and maintain Tier-0 AD architecture for privileged access. Monitor system performance and respond to incidents. Collaborate with security teams to ensure compliance. Document procedures and changes following ITIL standards. Requirements: 5+ years of experience in Windows Infrastructure administration. Strong knowledge of Active Directory and Microsoft 365 integration . Experience with ADFS, Tier-0 architecture, and CA servers. Proficiency in PowerShell scripting. Understanding of networking fundamentals (TCP/IP, DNS, DHCP). Microsoft certifications (e.g., MCSE, MS-102, AZ-800/801). Familiarity with CyberArk and cloud platforms (Azure/AWS). Knowledge of ITIL and change management processes. #J-18808-Ljbffr



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