Technical Solutions Architectu..._AD_DS

Req ID: 396413

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.

We are currently seeking a Technical Solutions Architectu..._AD_DS to join our team in Noida, Uttar Pradesh (IN-UP), India (IN).

Key Responsibilities

A. Active Directory Administration and Engineering

• Design, administer, and support enterprise Microsoft Active Directory Domain Services (AD DS) environments across production and non-production domains.

• Manage domain controllers, forests, domains, trusts, organizational units (OUs), sites, subnets, and Global Catalog services.

• Administer and troubleshoot DNS, DHCP, Group Policy Objects (GPOs), FSMO roles, Kerberos, LDAP, NTLM, and Windows authentication.

• Manage Active Directory replication, Sites and Services, SYSVOL, DFS Replication (DFSR), and domain controller health.

• Support user, group, computer, service account, and managed service account administration, including gMSA.

• Manage domain joins, secure channel issues, account lockouts, authentication failures, and directory connectivity.

• Support Active Directory schema considerations, domain controller lifecycle management, and directory architecture changes.

B. Advanced L3 Troubleshooting and RCA

• Own complex L3 escalations involving authentication failures, replication inconsistencies, DNS resolution, Group Policy processing, Kerberos, LDAP, trusts, and domain controller availability.

• Diagnose replication failures using tools such as repadmin, dcdiag, and event logs.

• Troubleshoot SYSVOL/DFSR synchronization issues, lingering objects, USN-related problems, time synchronization, and domain controller promotion or demotion failures.

• Perform detailed RCA for recurring and high-impact incidents and implement permanent corrective and preventive actions.

• Lead resolution of critical incidents involving directory outages, authentication disruptions, and cross-domain connectivity issues.

• Analyze directory service logs, performance counters, network traces, and authentication flows to identify underlying problems.

• Coordinate with Microsoft support and infrastructure, network, security, application, and IAM teams to resolve complex issues.

C. Directory Services Security and Hardening

• Implement and maintain secure Active Directory configurations aligned with enterprise security standards and Microsoft security recommendations.

• Review privileged groups, delegated permissions, administrative accounts, service accounts, and access control lists (ACLs).

• Support remediation of excessive privileges, insecure configurations, legacy authentication protocols, and stale or unmanaged accounts.

• Implement and review Group Policy security settings, password policies, account lockout policies, and authentication controls.

• Support privileged access security, tiered administration, protected administrative accounts, and secure management of domain controllers.

• Identify and remediate risks involving Kerberos, NTLM, LDAP signing/channel binding, unconstrained delegation, and other directory security weaknesses.

• Support security audits, vulnerability remediation, compliance evidence collection, and access reviews.

D. Hybrid Identity and Enterprise Integrations

• Support integration between on-premises Active Directory and Microsoft Entra ID.

• Troubleshoot hybrid identity synchronization and authentication dependencies, where applicable.

• Collaborate with IAM/IGA, PAM, SSO/MFA, endpoint, and cloud infrastructure teams on identity-related integrations.

• Support directory dependencies for enterprise applications, LDAP integrations, service authentication, and identity lifecycle workflows.

• Troubleshoot authentication and authorization issues across interconnected enterprise environments.

• Support directory-related migration, consolidation, trust configuration, and application modernization initiatives.

Required Technical Skills

• Expert-level knowledge of Microsoft Active Directory Domain Services and enterprise Windows Server environments.

• Strong expertise in AD replication, DNS, Group Policy, FSMO roles, Global Catalog, trusts, and Sites and Services.

• Advanced troubleshooting of Kerberos, LDAP, NTLM, secure channels, authentication, authorization, and account lockouts.

• Strong knowledge of DFSR/SYSVOL, domain controller health, time synchronization, and directory recovery.

• Experience with PowerShell scripting and automation.

• Strong understanding of Active Directory security, delegation, ACLs, privileged groups, service accounts, and gMSA.

• Experience with Microsoft Entra ID and hybrid identity integration is desirable.

• Familiarity with monitoring, SIEM integration, vulnerability remediation, and security auditing.

• Experience with ITIL-based incident, problem, change, and service management processes.

Platform Lifecycle, Resilience and Change Management

• Plan and execute domain controller patching, upgrades, replacement, promotion, and demotion activities.

• Support Active Directory backup, forest recovery planning, disaster recovery testing, and business continuity procedures.

• Validate replication, DNS, authentication, Group Policy, and dependent services following infrastructure changes.

• Lead technical impact assessments, risk reviews, implementation plans, rollback planning, and post-change validation.

• Support capacity management, performance optimization, platform availability, and operational readiness.

• Ensure compliance with change management, incident management, problem management, and release management procedures.

About NTT DATA

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com, @nttdatafed.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us.

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