Specialist, IT Security (Identity & Directory Services Administrator)

L3Harris 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. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

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

Job Code: 37324

Job Location: (On Site) Melbourne, FL

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 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 supporting hybrid identity environments, including secure authentication, authorization, and compliance across on-premises and cloud-based systems.  The ideal candidate has recent 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.

Identity & Directory Services

• 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

• Support Microsoft Entra ID tenants, identities, and directory integrations

• Support hybrid identity solutions using Entra Connect (formerly AADC) and on-prem identity solutions

• Support identity lifecycle processes (joiners, movers, leavers)

Security & Access Management

• Work with Conditional Access, MFA, and identity protection policies

• Monitor and respond to identity-related security events and alerts

• Understanding of least-privilege access and zero-trust principles

Authentication & Integration

• Support secure authentication mechanisms including Kerberos, SAML, OAuth, and modern authentication

• Configure Entra ID with SaaS, IaaS, and on-premises applications

• Manage service principals, app registrations, and API permissions

Operations & Troubleshooting

• Diagnose and resolve 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

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