Senior / Lead Active Directory Administrator (B3/C1)

r3 Consultant; Mumbai; Hybrid; INR 1,200,000 - 1,800,000; Full time

Job summary

r3 Consultant is looking for an experienced Senior / Lead Active Directory Administrator to manage and support large-scale enterprise Active Directory environments. You will leverage your skills in AD administration, replication, DNS, and Group Policy. The ideal candidate will have 6-15 years of experience in AD services and strong expertise in automation and incident management.

It’s a full-time position with remote/hybrid options available. Candidates with strong DNS and Group Policy skills who have experience in sectors such as BFSI, Insurance, or Healthcare will thrive here.

Qualifications

• 6–15 years of experience in Active Directory Administration.
• Strong expertise in Active Directory Domain Services (AD DS).
• Hands-on experience with Active Directory Replication and Sites & Services.
• Strong understanding of AD Security including Privileged Access Management.

Responsibilities

• Administer and support enterprise Active Directory infrastructure.
• Manage AD replication, authentication, DNS, and Group Policy services.
• Lead troubleshooting for complex AD-related issues and outages.
• Develop and maintain PowerShell automation solutions.

Skills

Active Directory Administration

Group Policy administration

PowerShell scripting

DNS expertise

Incident Management

Autonomous Problem Solving

Education

B.E. / B.Tech

MCA

BCA

Diploma in Computer Science / IT

Equivalent qualification

Tools

PowerShell

VMware

Windows Server

Job description

Job Summary
We are seeking an experienced Senior / Lead Active Directory Administrator to manage and support large-scale enterprise Active Directory environments. The ideal candidate will have strong expertise in AD administration, replication, DNS, Group Policy, security, PowerShell automation, incident management, and infrastructure governance.

Experience: 6–15 Years

Location: Remote / Hybrid

Employment Type: Full-Time

Must-Have Skills

• 6–15 years of experience in Active Directory Administration.
• Strong expertise in Active Directory Domain Services (AD DS).
• Deep understanding of:
  • Forest and Domain Architecture
  • Domain Controllers
  • FSMO Roles
  • Global Catalog
  • Kerberos and NTLM Authentication
  • Trust Relationships
• Experience managing:
  • Users, Groups, OUs
  • Service Accounts
  • Delegation Models
  • Access Controls
• Strong Group Policy administration and troubleshooting:
  • LSDOU Processing
  • Security Filtering
  • WMI Filters
  • Loopback Processing
  • GPResult and RSOP
• Hands‑on experience with Active Directory Replication and Sites & Services.
• Experience using:
  • Repadmin
  • DCDiag
  • Event Viewer
  • ADSIEdit
• Strong DNS expertise:
  • SRV Records
  • Dynamic Updates
  • DNS Scavenging
  • DNS Resolution Troubleshooting
  • DC Locator Issues
• Strong understanding of AD Security:
  • Privileged Access Management
  • Delegation Controls
  • Auditing
  • Hardening Best Practices
• Hands‑on PowerShell scripting for automation, reporting, and bulk administration.
• Experience leading troubleshooting of critical incidents and enterprise outages.
• Experience working within ITIL Incident, Change, and Problem Management processes.

Preferred Skills

For Lead (B3)

• Multi‑site replication troubleshooting.
• Incident bridge leadership.
• Root Cause Analysis (RCA).
• Team mentoring and technical guidance.

For Sr. Lead (C1)

• AD Architecture and Governance.
• Forest/Domain Strategy.
• Disaster Recovery and Resiliency Planning.
• Security Governance and Compliance.
• Automation Frameworks and Operational Tooling.
• Technical Standards and Roadmap Ownership.

Additional Infrastructure Skills (Preferred)

Windows Server

• Hardening and Security
• Performance Monitoring
• Secure Channel Troubleshooting
• Patch Governance

VMware

• vCenter Administration
• HA / DRS Concepts
• vMotion
• Cluster Design
• Performance Optimization

Key Responsibilities

• Administer and support enterprise Active Directory infrastructure.
• Manage AD replication, authentication, DNS, and Group Policy services.
• Lead troubleshooting for complex AD‑related issues and outages.
• Perform health checks, operational maintenance, and service improvements.
• Develop and maintain PowerShell automation solutions.
• Collaborate with Security, Windows, VMware, Network, and Application teams.
• Lead or support major incident bridges and problem management activities.
• Maintain governance, standards, documentation, and operational procedures.
• Mentor team members and drive knowledge‑sharing initiatives.
• Support architecture, modernization, security, and automation initiatives based on role level.

Education

• B.E. / B.Tech
• MCA
• BCA
• Diploma in Computer Science / IT
• Equivalent qualification

Preferred Certifications

• Microsoft Windows Server Certifications
• Microsoft Identity & Access Certifications
• ITIL Foundation
• VMware Certifications (Good to Have)

Domain Experience

Experience supporting enterprise environments in BFSI, Insurance, Healthcare, Manufacturing, Retail, Telecom, or Technology sectors is preferred.