Active Directory Subject Matter Expert

Tata Consultancy Services Limited; Mumbai; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Tata Consultancy Services Limited in Mumbai seeks an experienced Windows AD administrator to manage Active Directory, IIS, and domain migrations across multiple locations. The role requires hands-on server and AD expertise, strong troubleshooting, and ITIL-aligned incident management.

Flexibility for shifts and on-site work at client locations is expected, with readiness to support 24x7 operations and engage in certificate/license management and security hardening.

Qualifications

• Hands-on experience with Windows Server 2003–2022 environments.
• Proficient in installation, troubleshooting and administration of IIS.
• Experience with Active Directory configuration and domain migration.
• In-depth knowledge of AD trust, DNS, LDAP, GPOs and security.
• Familiar with SSL certificates and license management.

Responsibilities

• Perform AD housekeeping and coordination.
• Domain controller hardening, patching and backup/restore strategies.
• Plan and execute domain migrations using Systools or Quest.
• Troubleshoot replication issues and manage certificates.
• Coordinate with OEMs and resolve critical issues.
• Maintain documentation and generate reports.
• Provide 24x7 support as required.

Skills

Windows Server administration

Active Directory

PowerShell

Batch scripting

IIS administration

Domain migration

Security and auditing

Tools

Systools

Quest

AD Audit tool

Job description

Role & responsibilities

• Should have thorough hands-on experience on Windows 2003/ 2008/2012, 2016, 2019 & 2022
• Should be well versed with installation, troubleshooting and administration of IIS
• Experience in Configuration and Administration of Windows Active Directory
• Should have worked on Domain Migration using Systools orQuest
• AD Housekeeping and cordination
• Group policies creation and deployment
• AD reports and Impact analysis
• Domain Controller Hardening
• Batch and PowerShell Scripting
• Upgrade, promotion and demotion of DCs
• Troubleshooting of replication issue
• Co-ordinating with OEM and follow-up on critical issues
• Vulnerability assessment closure
• ROOTCA internal & external certificate management.
• FTP, SFTP configuration and management.
• Worked on AD Auditing tool such AD Audit, etc.
• Domain controller replication issue troubleshooting
• Exposure to large setup with AD spanned across geographic locations
• Good understanding of AD trust, forest\child domain architecture, AD Sites and Services, internal and external DNS, LDAP, LDPAS, DHCP, GPO, Security Group Membership, AD Computer Domain Join, AD permissions and delegation.
• Microsoft failover cluster configuration.
• Good understanding of backup/restore/recovery technologies
• Patch administration and deployment.
• Good communication skills
• Flexible to work in shifts and across various locations in India
• Backup and restore architecture
• Knowledge on SSL certificates and license management
• Ensure monthly patching of servers as per schedule
• Good communication skills to connect with end users / clients Relocation to Mumbai. Work from client location No work from home.
• Ready to support 24*7
• Excellent communication and documentation skills.
• Understanding of ITIL processes and incident management.