Active Directory Engineer

Epergne Solutions; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

A technology solutions provider in Singapore is seeking an experienced Active Directory Engineer to manage AD upgrades and migrations. The role requires planning, assessing existing environments, and implementing secure solutions. Candidates should have over 10 years of experience in AD administration, with strong knowledge of Windows Server and associated services. The position necessitates effective collaboration with various teams and hands-on experience in troubleshooting directory services.

Qualifications

• 10+ years of experience in Active Directory administration, migration, and upgrades.
• Hands-on experience in multi-domain or multi-site AD environments.
• Ability to manage tasks independently and collaborate within a team.

Responsibilities

• Plan and execute Active Directory upgrade and migration activities.
• Assess existing AD environments and identify areas for improvement.
• Collaborate with teams to ensure compatibility and integration.
• Perform pre-migration testing and provide post-migration support.
• Develop automation scripts for administrative tasks.

Skills

Active Directory architecture knowledge

Windows Server environments proficiency

DNS, DFS, Group Policy troubleshooting

AD migration tools experience

PowerShell scripting skills

IAM concepts understanding

Federation services knowledge

IT service management processes awareness

Analytical and problem-solving skills

Effective communication skills

Education

Bachelor's degree in Information Technology or related field

Job description

We’re looking for an experienced Active Directory Engineer to plan, design and execute Active Directory (AD) upgrades and migrations. The role involves assessing existing environments, implementing secure and scalable solutions, and ensuring minimal disruption to business operations while collaborating with cross‑functional teams.

Job Details

• Role: Active Directory Engineer
• Location: Singapore
• Experience: 10+ years

Key Responsibilities

• Plan and execute Active Directory upgrade and migration activities, including detailed timelines and risk mitigation strategies
• Assess existing AD environments (domain controllers, group policies, DNS, security configurations) and identify improvement areas
• Design and implement domain controller lifecycle activities (promotion, demotion, isolation)
• Identify and manage dependencies on legacy systems and ensure smooth transition without business impact
• Collaborate with infrastructure, security, and application teams to ensure compatibility and integration
• Troubleshoot directory services, including synchronization and federation services
• Manage and support DNS, DFS, and Group Policy configurations
• Perform pre‑migration testing, validation, and fallback planning
• Ensure compliance with security standards, policies, and best practices
• Provide post‑migration support and resolve technical issues
• Develop scripts to automate administrative and migration tasks
• Support incident, change, and problem management processes in line with IT service management practices
• Prepare technical documentation, SOPs, and knowledge articles
• Provide technical guidance and support to team members and stakeholders

Skills & Competencies

• Strong knowledge of Active Directory architecture and lifecycle management
• Proficiency in Windows Server environments and AD services
• Hands‑on experience with DNS, DFS, Group Policy, and directory services troubleshooting
• Experience with AD migration tools (e.g., ADMT, Quest Migration Manager or equivalent)
• Scripting skills (PowerShell) for automation and administration
• Understanding of identity and access management (IAM), authentication, and authorization concepts
• Familiarity with federation services, certificate services, and single sign‑on (SSO)
• Knowledge of IT service management processes (incident, change, and problem management)
• Strong analytical, troubleshooting, and problem‑solving skills
• Effective communication and stakeholder collaboration skills

Requirements

• Bachelor’s degree in Information Technology, Computer Science, or a related field (or equivalent practical experience)
• Proven experience in Active Directory administration, migration, and upgrade projects
• Hands‑on experience in multi‑domain or multi‑site AD environments
• Experience in scripting and automation for system administration
• Familiarity with security best practices in enterprise environments
• Experience working in cross‑functional teams and supporting enterprise infrastructure
• Ability to manage tasks independently and contribute within a team environment