We are seeking a highly skilled and experienced Senior Infrastructure Engineer specializing in Active Directory AD and Server Domain Migrations In this role you will lead the architecture planning and execution of complex domain consolidation and server migration projects You will be responsible for ensuring seamless identity migration minimal business downtime and strict adherence to security and compliance frameworks The ideal candidate will have extensive handson experience with Microsoft Windows Server ecosystems enterprise migration tools and hybrid cloud identity environments
Key Responsibilities
1) Migration Strategy Execution
Architecture Planning Design test and implement Active Directory migration strategies intraforest and crossforest migrations domain consolidations and greenfield forest deployments
Tool Management Configure and operate enterprise migration tools eg Quest Migration ManagerMigrator Pro Binary Tree or Microsoft ADMT to migrate users computers service accounts and security groups
FSMO Domain Controller Lifecycle Manage the promotion and demotion of Domain Controllers transfer FSMO roles and handle postmigration metadata cleanup
Server Migration Execute Windows Server OS upgrades and migrations eg migrating workloads to Windows Server 20222025 while preserving permissions share configurations and data integrity
2) Active Directory Core Infrastructure Management
Identity Directory Services Maintain and optimize AD DS Group Policy Objects GPOs OU structures and Active Directory Sites and Services
Core Network Services Manage and troubleshoot DNS resolution replication topologies DHCP and integrated PKICertificate Services during transitional migration states
Trust Management Establish configure and troubleshoot secure Forest and Domain trusts across distinct corporate environments
3) Security Hardening Compliance
Security Baseline Enforcement Ensure migrated and newly established environments comply with cyber security policies modern TLS defaults and strong cryptographic standards
SidHistory Remediation Manage sIDHistory cleaning and ensure proper access control translation during object migration phases
Health Validation Perform ongoing directory health checks using tools like dcdiag repadmin and SYSVOL verification via DFSR to address replication or structural errors promptly
4) Collaboration Documentation
Technical Writing Produce detailed Standard Operating Procedures SOPs fallbackrollback plans and architectural diagrams
CrossFunctional Support Coordinate with network security and cloud engineering teams to ensure application compatibility and minimal impact on enduser authentication
Qualifications Technical Skills
Education Bachelors degree in Computer Science Information Technology Cyber Security or equivalent practical experience
Experience 6 years of dedicated experience in enterprisescale Active Directory administration and complex domain migration projects
Technical Proficiencies
Operating Systems Deep expertise in Windows Server 2012R2 through Windows Server 20222025
Automation Advanced scripting proficiency in PowerShell for directory manipulation object modifications and automated migration tasks eg Move AD Directory Server Operation Master Role Set AD Forest Mode
Migration Utilities Hands on experience with Quest Software suites Directory Sync Pro or ADMT
Hybrid Identity Preferred Familiarity with Microsoft Entra ID Azure AD Azure AD ConnectCloud Sync and configuring custom B2CB2B identity policies or hybrid joins
Soft Skills
Robust analytical and troubleshooting mindset under timesensitive deployment windows
Exceptional communication skills to convey complex technical risks to project stakeholders
Proven ability to work independently during night or weekend maintenance windows
Skills
Mandatory Skills : Azure Active Directory, Windows Server
About LTM
LTM is an AI-centric global technology services company and the Business Creativity partner to the world’s largest and most disruptive enterprises. We bring human insights and intelligent systems together to help clients create greater value at the intersection of technology and domain expertise. Our capabilities span integrated operations, transformation, and business AI — enabling new ways of working, new productivity paradigms, and new roads to value. Together with over 87,000 employees across 40 countries and our global network of partners, LTM — a Larsen & Toubro company — owns business outcomes for our clients, helping them not just outperform the market, but to Outcreate it. Please also note that neither LTM nor any of its authorized recruitment agencies/partners charge any candidate registration fee or any other fees from talent (candidates) towards appearing for an interview or securing employment/internship. Candidates shall be solely responsible for verifying the credentials of any agency/consultant that claims to be working with LTM for recruitment. Please note that anyone who relies on the representations made by fraudulent employment agencies does so at their own risk, and LTM disclaims any liability in case of loss or damage suffered as a consequence of the same. Recruitment Fraud Alert - https://www.ltm.com/careers/recruitment-fraud-alert
📌 Specialist - System Management (Coimbatore)
🏢 LTM
📍 Coimbatore
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