Senior Active Directory Engineer - Domain Upgrades & Hybrid

NATIONMIND LLC; Houston (TX); Hybrid; USD 120,000 - 150,000; Full time

Job summary

NationMind LLC in Houston, TX seeks an experienced Active Directory Engineer to lead modernization of the Windows infrastructure, domain controller lifecycle, and AD DS administration in an enterprise environment.

The role encompasses upgrades and migrations, GPO design, DNS operations, replication monitoring, and close collaboration with security and infrastructure teams. Onsite/hybrid work options with a 12-month contract.

Qualifications

• 7+ years of experience administering Microsoft Active Directory.
• Strong experience with Active Directory Domain Services (AD DS).
• Hands-on experience with Domain Controller promotions and demotions.
• Experience performing Active Directory upgrades and migrations.
• Strong knowledge of Group Policy (GPO) design, implementation, and troubleshooting.
• Experience managing Active Directory-integrated DNS.
• Expertise in Active Directory replication troubleshooting using Repadmin, DCDiag, Event Viewer, and PowerShell.
• Experience with Windows Server 2016/2019/2022 administration.

Responsibilities

• Perform Active Directory upgrades, migrations, and modernization activities.
• Manage the complete Domain Controller lifecycle, including installation, configuration, promotion, demotion, decommissioning, and replacement.
• Configure, maintain, and troubleshoot Active Directory Domain Services (AD DS).
• Create, manage, and optimize Group Policy Objects (GPOs) to meet business and security requirements.
• Administer and troubleshoot DNS in an Active Directory-integrated environment.
• Monitor and resolve Active Directory replication issues using tools such as Repadmin and DCDiag.
• Perform Active Directory health checks and implement best practices for high availability.
• Support domain functional level upgrades and Windows Server migrations.
• Manage Organizational Units (OUs), users, groups, service accounts, and security permissions.
• Coordinate Active Directory changes with security, infrastructure, and application teams.
• Document implementation procedures, configurations, and operational standards.
• Provide L2/L3 support for Active Directory-related incidents and production issues.

Skills

Active Directory

AD DS

DC Promotions/Demotions

Group Policy

DNS

PowerShell

Windows Server

LDAP/Kerberos

Tools

Repadmin

DCDiag

Event Viewer

PowerShell

AD Sites & Services

Job description

NationMind LLC in Houston, TX seeks an experienced Active Directory Engineer to lead modernization of the Windows infrastructure, domain controller lifecycle, and AD DS administration in an enterprise environment.

The role encompasses upgrades and migrations, GPO design, DNS operations, replication monitoring, and close collaboration with security and infrastructure teams. Onsite/hybrid work options with a 12-month contract.