About The Company

Tata Communications Redefines Connectivity with Innovation and IntelligenceDriving the next level of intelligence powered by Cloud, Mobility, Internet of Things, Collaboration, Security, Media services and Network services, we at Tata Communications are envisaging a Current World of Communications

• Architect, plan, and implement enterprise-level AD infrastructure.
• Perform domain/forest upgrades, consolidation, and restructuring.
• Design OU models, delegation structures, GPO architecture, and security baselines.
• Plan and implement multi-site deployment, replication topology, site links, and DC placement. Handle P1/P2 escalations, critical outages, and deep-dive troubleshooting. Troubleshoot:
• AD replication failures
• Kerberos/NTLM authentication issues
• Trust relationship issues
• SYSVOL/DFSR/FRS problems
• FSMO role failures
• DNS-integrated AD issues Perform advanced diagnostics with: dcdiag, repadmin, nltest, ktpass, klist, ldp, ADSI Edit, Event logs.
• Design and manage complex GPO environments.
• Perform GPO impact assessments and conflict resolution.




• Establish GPO standards, baselines (CIS, Microsoft Security Baselines), and enforcement
• Implement AD tiering models (Tier 0/1/2) and privileged access security.
• Manage privileged groups with PAM/PIM (e.g., Azure AD PIM).
• Enforce secure domain controller policies.
• Conduct frequent AD security posture reviews and audits.
• Work with SIEM/SOC teams on identity-related incidents. Support and integrate AD with enterprise apps:
• ADFS
• Azure AD / Entra ID
• Azure AD/Entra ID Connect (sync, filtering, staging mode)
• SSO/SAML/LDAP-based applications Troubleshoot synchronization, token issues, or authentication flows
• Manage domain controllers (on-prem & cloud-hosted).
• Support DNS, PKI (ADCS), and time-sync architecture.
• Plan and implement backup/restore, authoritative/non- authoritative restores, and tombstone recovery.
• 12–20 years of experience managing and troubleshooting Activ

📌 Manager - Network Operations & Support (Pune)
🏢 Tata Communications
📍 Pune