Job Description
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 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, DHCP, PKI (ADCS), and time-sync architecture.
Plan and implement backup/restore, authoritative restores, and tombstone recovery.About Company
Tata Communications is a digital ecosystem enabler that powers today’s fast-growing digital economy. We enable the digital transformation of enterprises globally, including 300 of the Fortune 500. We carry around 30% of the world’s internet routes and connects businesses to 60% of the world’s cloud giants.
We have been a part of the rich heritage of the internet in India. Over the last 25 years, enterprise-enabled services have been essential to the adoption of digital services in the country. Connectivity is an essential fabric of sustenance for the economy. We are committed to enabling Industry leaders in this New World of Communications™, with our unique promise of delivering secure connected digital experiences.
In 2020, we announced the launch of ‘Secure Connected Digital Experience’ (SCDx), a proposition intended to meet this growing, worldwide demand for new ways of operating, which includes far higher levels of working from home, rising security risks, a shift to digital commerce, and more contactless experiences. It will help companies currently relying on short-term fixes by providing holistic, secure, enterprise-level digital solutions that address current challenges and are fit for the long term.
