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Oracle
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System Administrator 2-IT

System Administrator 2-IT

Oracle

6 - 10 years

11 - 13 Lacs

bengaluru

Posted:3 weeks ago| Platform:

Apply

Skills Required

access control compliance architecture active directory dns microsoft infrastructure services adfs dhcp identity management

Work Mode

Work from Office

Job Type

Full Time

Job Description

We are looking for a highly skilled

Active Directory & Entra ID Engineer

to join our infrastructure and identity services team. The ideal candidate will have deep expertise in designing, managing, and securing identity platforms across on-premises Active Directory and Microsoft Entra ID. This role involves working on AD modernization initiatives, directory migrations, DNS/DHCP infrastructure improvements, security hardening, and enterprise identity governance.

Career Level - IC2

Active Directory & Identity Management

Manage, maintain, and optimize

Active Directory Domain Services (AD DS)

across multiple domains and sites.

Lead

Domain Controller upgrades, AD migrations, and consolidation projects

Oversee

Group Policy design, cleanup, consolidation, and optimization

Implement and maintain

organizational units, group structures, permissions, and delegation models

Handle identity governance, access control, and lifecycle management activities.

Microsoft Entra ID (Azure AD)

Manage and administer

Entra ID tenants

, including Conditional Access, identity protection, SSO configurations, and MFA policies.

Integrate on-premises AD with Entra ID using

AAD Connect

, cloud sync, and federation where required.

Support and optimize

hybrid identity

setups and trust relationships.

Core Infrastructure Services

Configure, manage, and troubleshoot

DNS, DHCP, ADFS, NPS, and Certificate Authority (AD CS)

environments.

Lead

DHCP/DNS server upgrade or migration projects

and ensure smooth cutovers.

Implement DNS and DHCP best practices, including scavenging, lease management, and high availability.

Maintain and support

public key infrastructure (PKI)

components and certificate lifecycle management.

Security & Compliance

Enhance AD and Entra ID security posture through

policy hardening, privileged access reduction, and security best practices

Implement and manage

Role-Based Access Control (RBAC)

and

Privileged Identity Management (PIM)

Conduct regular audits, permission reviews, and compliance checks.

Collaborate with the security team to address vulnerabilities and identity-related risks.

Operations & Troubleshooting

Provide Tier-3 support for identity, authentication, GPO, DNS/DHCP, and AD-related escalations.

Monitor performance, replication, and health of AD and Entra ID environments.

Prepare and maintain detailed documentation, SOPs, and architectural diagrams.

Participate in on-call rotations and support critical production incidents.

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