Active Directory Specialist

WalkIn Drive at TCS Kolkata on 01-08-2026 Job Role: - Active directory Job Location :- Kolkata Exp: - 05-12yr Venue :-Tata Consultancy Services Ltd. Gitanjali Park, International Finalcial Hub(CBD), Newtown, Kolkata - 700156 Job Role:- Job Requirements* Job Requirements* Strong hands-on experience with Active Directory Domain Services (AD DS). Good understanding of domains, forests, trusts, and replication concepts. Experience in managing Group Policy Objects (GPOs). Proficiency in Windows Server administration (2016/2019/2022). Create and manage users, groups and roles across AD and Entra ID Basic knowledge of DNS, DHCP, and networking concepts (TCP/IP). Experience with PowerShell scripting for automation tasks. Understanding Identity & Access Management (IAM) and RBAC concepts. Knowledge of Hybrid identity (On-prem AD & Azure AD) sync using Azure AD connect Knowledge of AD security best practices (MFA, Conditional Access), auditing, and compliance. Key Responsibilities* Administer and maintain on-prem Active Directory and Microsoft Entra ID environments. Create, modify, and manage user accounts, groups, and Organizational Units (OUs). Manage hybrid identity setups including synchronization via Azure AD Connect. Monitor AD replication, performance, AD & Entra ID health and sign-in activity. Implement and manage Group Policies (GPOs) to enforce system configurations and security and Azure AD policies (Conditional Access, MFA). Perform regular security audits and implement AD hardening measures. Automate repetitive administrative tasks using PowerShell scripts. Manage and maintain DNS zones, records and name resolution services Administer DHCP servers, scopes, IP allocation and lease management Troubleshoot AD-related issues including login, authentication issues including SSO, and sync failures, and access problems. Collaborate with IT, security, and infrastructure teams to support business operations.