Senior Directory Infrastructure Engineer (Remote)

Serigor Inc; Washington (District of Columbia); Remote; USD 120,000 - 160,000; Full time

Job summary

A leading company seeks a Senior Directory Infrastructure Engineer to manage complex directory services with robust experience in Active Directory and modern identity approaches. This remote position offers opportunities to enhance security practices while enhancing the user experience across platforms. Ideal candidates will exhibit strong technical skills and a commitment to quality service.

Qualifications

• 6 years experience with enterprise directory services required.
• 5 years experience with AD domain lifecycle management.
• Strong PowerShell scripting skills required.

Responsibilities

• Design and maintain enterprise directory services infrastructure.
• Manage AD domains lifecycle including planning and deployment.
• Lead domain consolidation and migration projects.

Skills

Active Directory

Entra ID

LDAP

Automation scripts

GraphAPI

REST API

Security best practices

Disaster Recovery

Education

Bachelor's degree

Tools

PowerShell

Terraform

Ansible

Job description

Job Title: Senior Directory Infrastructure Engineer (Remote)
Location: Washington, DC
Duration:12 Months+

Job Description:
The client's Security and Engineering Team manages a variety of functions including endpoint management, Active Directory, VPN, firewalls and security incident response. The team is l seeking experienced Directory Infrastructure Engineers with extensive expertise in enterprise identity infrastructure including Active Directory, Entra ID (formerly Azure AD), OKTA Universal Directory, and LDAP environments. The resource must have a proven track record of designing and managing complex directory services across multiple platforms with particular emphasis on the complete lifecycle management of AD domains. The ideal candidates will bring expertise in modern identity approaches including Just-In-Time access, Privileged Identity Management, and continuous validation patterns that balance security with user experience.

Key Responsibilities

• Design, implement, and maintain enterprise directory services infrastructure
• Manage the complete lifecycle of AD domains including planning, deployment, maintenance, upgrades, and decommissioning
• Lead domain consolidation, migration, and forest restructuring projects
• Develop domain health monitoring and proactive maintenance procedures
• Create and execute disaster recovery plans for directory services
• Develop and maintain automation scripts using PowerShell for directory management tasks
• Interface with directory services using GraphAPI and REST API for custom integrations
• Implement and maintain security best practices for directory services
• Design and manage trust relationships between domains and forests
• Create and maintain documentation for directory architecture and operational procedures
• Provide escalation support for critical directory service incidents

Preferred Qualifications

• Relevant certifications (Microsoft 365 Certified: Identity and Access Administrator, OKTA Professional, etc.)
• Experience with Terraform, Ansible, or similar IaC tools for directory infrastructure
• Knowledge of SAML, OAuth, OIDC, and other modern authentication protocols
• Experience with Group Policy design and management
• Expertise in domain controller sizing, placement, and performance optimization
• Experience with domain functional level upgrades and cross-domain migrations
• Familiarity with CI/CD pipelines for infrastructure automation
• Experience with implementing Zero Trust architecture

Skills:

Skills	Required / Desired	Amount	of Experience
Experience with enterprise directory services (Active Directory, Entra ID, OKTA Universal Directory, LDAP)	Required	6	Years
Experience with AD domain lifecycle management including domain creation, upgrades, and decommissioning	Required	5	Years
Advanced PowerShell scripting skills with demonstrable experience automating directory management tasks	Required	5	Years
Proven experience with Microsoft GraphAPI and REST API integration for directory management	Required	5	Years
Strong understanding of identity security best practices and compliance requirements	Required	5	Years
Experience with directory synchronization technologies (Azure AD Connect, OKTA integration agents, etc.)	Required	5	Years
Experience with multi-forest and hybrid identity environments	Required	5	Years
Ability to design and implement complex directory architecture solutions	Required	5	Years
Bachelor’s degree	Required