Senior Directory Services Engineer Active Directory Expert

DEXTER TECHNOLOGIES INC; Austin (TX); Remote; USD 140,000 - 180,000; Full time

Job summary

Dexter Technologies Inc. is seeking a Senior/Principal Directory Services Engineer to lead AD architecture and identity infrastructure in a large, multi-forest environment.

This remote, contract-to-hire role focuses on modernization, security, and lifecycle management of directory services, with responsibilities spanning domain consolidation, GPOs, DNS/DHCP, and Zero Trust alignment. If you have 10+ years of hands-on AD experience and strong PowerShell automation, apply to join a team dedicated

Qualifications

• 10+ years of hands-on experience with Active Directory in large, complex enterprise environments.
• Expert-level knowledge of AD architecture, domain controllers, replication, GPOs, DNS/DHCP, trusts, and security models.
• Strong experience with PowerShell scripting and automation.
• Deep understanding of identity security, privileged access management, and Zero Trust principles.
• Proven ability to lead large-scale directory upgrades, migrations, and remediation efforts.

Responsibilities

• Serve as the principal expert for Active Directory architecture, design, and operations across multi-domain, multi-forest environments.
• Lead modernization initiatives including domain consolidation, schema upgrades, AD hardening, and identity lifecycle automation.
• Architect and maintain Group Policy, DNS, DHCP, replication, trusts, and domain controller strategy.
• Oversee AD security posture: privileged access, tiering models, delegation, auditing, and Zero Trust alignment.
• Develop standards, runbooks, and automation using PowerShell and modern configuration tools.
• Collaborate with cross-functional teams (Security, Cloud, Infrastructure, Applications) to ensure directory stability and performance.

Skills

Active Directory

Identity security

Zero Trust

PowerShell scripting

Education

Microsoft certifications (MS-102, AZ-104, SC-300) or equivalent

Tools

PowerShell

Job description

Dexter Technologies Inc., is a leading provider of Staffing and Recruiting Services. For over two decades, we have put countless professionals to work at exciting opportunities. We are proud of the fact that many of them have been promoted to more senior roles: management, senior management, and senior executive leadership positions.

We are actively seeking qualified candidates for the following position for our client, who is an industry leader:

Senior Directory Services Engineer (Active Directory Expert)

Location: Remote

Type: Contract to Hire (6-12 months)

Role Overview

The Senior/Principal Directory Services Engineer is the organization’s top technical authority for Active Directory and core identity infrastructure. This role leads the design, modernization, security, and lifecycle management of enterprise directory services, ensuring reliability, scalability, and alignment with business and regulatory requirements.

Key Responsibilities

• Serve as the principal expert for Active Directory architecture, design, and operations across multi‑domain, multi‑forest environments.
• Lead modernization initiatives including domain consolidation, schema upgrades, AD hardening, and identity lifecycle automation.
• Architect and maintain Group Policy, DNS, DHCP, replication, trusts, and domain controller strategy.
• Oversee AD security posture: privileged access, tiering models, delegation, auditing, and Zero Trust alignment.
• Drive root‑cause analysis and resolution of complex directory issues impacting authentication, authorization, and enterprise applications.
• Develop standards, runbooks, and automation using PowerShell and modern configuration tools.
• Collaborate with cross‑functional teams (Security, Cloud, Infrastructure, Applications) to ensure directory stability and performance.
• Evaluate and optimize vendor, contractor, and staffing partnerships supporting directory services.

Required Experience

• 10+ years of hands‑on experience with Active Directory in large, complex enterprise environments.
• Expert‑level knowledge of AD architecture, domain controllers, replication, GPOs, DNS/DHCP, trusts, and security models.
• Strong experience with PowerShell scripting and automation.
• Deep understanding of identity security, privileged access management, and Zero Trust principles.
• Proven ability to lead large‑scale directory upgrades, migrations, and remediation efforts.

Preferred Qualifications

• Background in AD forest recovery, DR planning, and cyber‑resiliency hardening.
• Microsoft certifications (MS‑102, AZ‑104, SC‑300) or equivalent is a plus

This is a remote position.