Senior Active Directory Engineer

Summary
We are seeking a highly skilled Active Directory Engineer with experience in planning and executing Active Directory (AD) migrations/Upgrade. The ideal candidate will be responsible for developing comprehensive upgrade plans, performing assessments of existing environments, and ensuring a seamless migration with minimal disruption. In addition, candidate should have skill to lead the project and deal with stakeholders.

Responsibilities :

• Lead end-to-end Active Directory migration and upgrade initiatives across enterprise environments.
• Perform comprehensive assessments of existing AD infrastructure, including domain controllers, Group Policies, DNS, DFS, and security configurations.
• Design and implement AD upgrade strategies to modern Windows Server environments (e.g., Windows Server 2025).
• Identify and eliminate dependencies on legacy AD systems while ensuring business continuity.
• Plan and execute domain controller lifecycle activities, including promotion, demotion, and decommissioning.
• Collaborate with application, network, and security teams to ensure compatibility and seamless integration during migration.
• Work with application owners to remediate insecure protocols and remove hardcoded dependencies.
• Manage and troubleshoot Active Directory Federation Services (ADFS) and directory synchronization issues.
• Administer and support DFS, DNS, and Group Policy infrastructure.
• Utilize migration tools such as ADMT, Quest Migration Manager, or equivalent solutions.
• Develop and execute pre-migration validation, testing, and rollback strategies.
• Automate administrative and migration tasks using PowerShell scripting.
• Ensure adherence to security policies, compliance standards, and AD best practices.
• Provide post-migration support and resolve complex technical issues.
• Act as a technical lead, guiding L1/L2 engineers and ensuring adherence to ITIL processes.
• Prepare and maintain technical documentation, runbooks, and knowledge base articles.

Requirements

• Bachelor’s degree in Information Technology or related field
• Minimum 10 years of experience in Active Directory administration, engineering, and lifecycle management.
• Proven track record in planning and executing AD migration and upgrade projects.
• Strong expertise in multi-site, multi-domain, and multi-forest AD environments.
• Hands-on experience with AD migration tools (e.g., ADMT, Quest Migration Manager).
• Strong knowledge of Windows Server platforms (2016/2019/2022; 2025 preferred).
• Deep understanding of authentication, authorization, and OS-level security.
• Proficiency in PowerShell scripting for automation and administration.
• Experience with Active Directory Certificate Services (ADCS), ADFS, and Identity Management solutions.
• Knowledge of IAM, Entra ID, and Single Sign-On (SSO) technologies.
• Strong experience in DFS, DNS, and Group Policy management.
• Experience performing AD health checks and performance tuning.
• Familiarity with ITIL processes and tools such as ServiceNow (Incident, Problem, and Change Management).
• Strong problem-solving, troubleshooting, and analytical skills.
• Excellent communication, stakeholder management, and documentation skills.