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

Harris 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.

L3

Harris 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: 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.

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
• 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)

Security & Access Management

• 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

Authentication & Integration

• 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

Operations & Troubleshooting

• 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

Automation & Improvement

• 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

Organizational Changes

• 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 …