Senior Directory Services Engineer -Active Directory Expert

DEXTER TECHNOLOGIES INC; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Dexter Technologies Inc. is seeking a Senior Directory Services Engineer to lead design, modernization, security, and lifecycle management of enterprise AD infrastructure.

This remote contract-to-hire role requires deep AD expertise to ensure reliability, scale, and regulatory alignment across multi-forest environments. The Senior Directory Services Engineer will drive AD modernization, hardening, and automation using PowerShell, while collaborating with Security, Cloud, and Infra teams to

Qualifications

• 10+ years of hands-on Active Directory experience in large enterprises.
• Expert knowledge of AD architecture, domain controllers, replication, and GPOs.
• Strong PowerShell scripting and automation experience.
• Deep understanding of identity security and Zero Trust principles.
• Experience leading large directory upgrades and migrations.

Responsibilities

• Serve as principal expert for AD architecture across multi-domain forests.
• Lead modernization initiatives including domain consolidation and AD hardening.
• Architect and maintain Group Policy, DNS, DHCP, replication, trusts, and DC strategy.
• Oversee AD security posture: privileged access, tiering, auditing, and Zero Trust.
• Drive root-cause analysis of directory issues impacting authentication and apps.
• Develop standards, runbooks, and automation using PowerShell.
• Collaborate with Security, Cloud, Infrastructure, Applications teams for directory stability.
• Evaluate vendor and staffing partnerships supporting directory services.

Skills

Active Directory

PowerShell

Identity security

Zero Trust

Group Policy

DNS/DHCP

Domain Controllers

Multi-domain

Automation

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.