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# Senior Directory Services Engineer -Active Directory Expert

- **Company:** Dexter Technologies
- **Location:** Austin, TX, United States (Remote available)
- **Experience:** Expert
- **Contract:** Temporary to permanent
- **Skills:** Active Directory, Domain Controllers, Cloud Computing, Dynamic Host Configuration Protocol, Domain Name System (DNS), Identity and Access Management, Windows PowerShell, Zero Trust Network Access, Runbook, Curam Configuration Tools, Enterprise Software Applications
- **Published:** September 25, 2026
- **Apply:** https://www.wayup.com/i-j-Senior-Directory-Services-Engineer-Active-Directory-Expert-DEXTER-TECHNOLOGIES-INC-773945233069316/

## About the Role

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

## Description

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.