Senior Specialist, IT Security; Identity & Directory Services Administrator

L3

Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3

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Job Title: Senior Specialist, IT Security (Identity & Directory Services Administrator)
Job Code: 33574

Job Location: Melbourne, FL;
Rochester, NY;
Clifton, NJ; or Salt Lake City, UT

Job Schedule: 9/80:
Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off

We are seeking an experienced Active Directory (AD) and Entra  (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 , 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.

• 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 , 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  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 Power Shell and Entra
• 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.

Must be able to obtain a security clearance.

• 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  (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…