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Hcl Comnet

Senior Active Directory Engineer

10-12 Years
SGD 6,500 - 13,000 per month
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Job Description

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.

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About Company

Job ID: 145451805

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