Senior Specialist, IT Security (Identity & Directory Services Administrator)

L3HHCM20•Clifton, NJ

2d•$94,000 - $175,000•Remote

About The Position

We are seeking an experienced Active Directory (AD) and Entra ID (Azure AD) Administrator to support a large, multi-domain, multi-tenant, multi-national identity environment for a major defense contractor. This role is responsible for designing, maintaining, and supporting hybrid identity environments, ensuring secure authentication, authorization, and compliance across on-premises and cloud-based systems. The ideal candidate has deep technical expertise in AD and Entra ID, strong security awareness, proven troubleshooting skills, and hands-on experience supporting enterprise-scale identity solutions. If you have the necessary skills, join us in our mission to provide innovative and reliable identity solutions.

Requirements

Bachelor’s degree in Information Systems, Computer Sciences, or an equivalent IT-related degree and a minimum of 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
6+ years of experience supporting Active Directory, including advanced expertise in building & maintaining AD domains, troubleshooting replication and kerberos authentication issues, complex group policy design, etc.
3+ years of Microsoft Entra ID (Azure AD) administration experience, including experience in a hybrid environment with responsibility for supporting identity synchronization, MFA, privileged identity management, tenant management, conditional access policy creation & modification, and setup of identity federation application authentication.
2+ years of PowerShell experience, including creating and modifying scripts for process automation

Nice To Haves

Experience supporting Entra ID (Azure AD) in a hybrid environment containing multiple AD domains and multiple cloud tenants.
Experience migrating identities and objects between AD forests
Microsoft certifications (e.g., Entra ID, Azure Administrator, Identity & Access Administrator) are beneficial.
Willingness to keep data and information strictly confidential.
Experience in regulated or high-security environments
Strong problem-solving and troubleshooting skills.

Responsibilities

Administer, maintain, and troubleshoot Active Directory Domain Services (AD DS), including users, groups, computers, OU structure, GPOs, domain controllers, and associated Microsoft or third-party applications
Manage Microsoft Entra ID tenants, identities, and directory integrations
Design and support hybrid identity solutions using Entra Connect (formerly AADC) and on-prem identity solutions
Support identity lifecycle processes (joiners, movers, leavers)
Implement and manage Conditional Access, MFA, and identity protection policies
Configure and maintain Privileged Identity Management (PIM)
Monitor and respond to identity-related security events and alerts
Enforce least-privilege access and zero-trust principles
Support secure authentication mechanisms including Kerberos, SAML, OAuth, and modern authentication
Integrate Entra ID with SaaS, IaaS, and on-premises applications
Manage service principals, app registrations, and API permissions
Diagnose and resolve complex identity, authentication, and replication issues
Perform routine maintenance, health checks, and performance tuning
Support audits, compliance requirements, and security assessments
Develop and maintain documentation, standards, and operational procedures
Participate in on-call rotation and provide after-hours support as requried
Automate identity management tasks using PowerShell and Entra ID APIs
Recommend and implement improvements to security, scalability, and reliability
Participate in infrastructure projects, migrations, and upgrades
Support acquisition, divestiture, and integration activities.
Support AD forest/domain migration work and Azure tenant consolidations.