Apply on Employer Site

RadNet · 2 weeks ago

Systems Administrator Iv

Owings Mills, MD

Full-time

Onsite

Senior Level, Lead/Staff

12+ years exp

RadNet is a leader in radiology, dedicated to delivering quality, value, and access in healthcare. As a Systems Administrator IV, you will architect and maintain enterprise-level Microsoft Active Directory environments, manage identity and access management strategies, and provide tier IV support while mentoring junior staff.

Health CareHealth DiagnosticsHospitalMedical

Responsibilities

Architect, design, and maintain enterprise-level Microsoft Active Directory environments, including forest/domain structures, trusts, replication topology, and identity synchronization with Azure AD/Entra ID

Lead Group Policy design and lifecycle management, implementing security baselines and automation for configuration consistency

Manage and optimize DNS and DHCP infrastructure across multiple sites and domains to ensure high availability, redundancy, and security

Develop and maintain enterprise-level identity and access management (IAM) strategies, integrating SSO, MFA, and Conditional Access policies

Oversee advanced domain migrations, consolidations, and upgrades, including hybrid and cloud identity projects

Act as a subject matter expert (SME) for Windows Server, Microsoft 365, and Azure infrastructure environments, ensuring secure and reliable operation

Collaborate with cybersecurity teams to ensure compliance with best practices, including auditing, least privilege, and role-based access controls (RBAC)

Utilize PowerShell scripting and automation frameworks to streamline administration, reporting, and configuration enforcement

Provide tier IV escalation support for domain-related incidents and performance optimization

Mentor and provide technical direction to Systems Administrators I–III and IT project teams

Develop comprehensive documentation, runbooks, and policy guidelines for enterprise systems

Partner with leadership to evaluate emerging Microsoft technologies, propose improvements, and lead implementation initiatives aligned with business goals

Qualification

Microsoft Active DirectoryPowerShell scriptingIdentityAccess managementMicrosoft CertificationsWindows ServerDNSDHCP managementCybersecurity complianceLeadership skillsCommunication skillsDocumentation skills

Required

Bachelor's Degree in Computer Science, Information Systems, or related field; Master's Degree preferred

Twelve (12+) years of progressive systems administration experience with at least seven (7+) years focused on Microsoft domain and identity services in large enterprise environments

Required Microsoft Certifications: Microsoft Certified: Windows Server Hybrid Administrator Associate, Azure Administrator Associate, or Azure Solutions Architect Expert; Microsoft Certified: Active Directory and Identity Management (MCSE or equivalent legacy certification acceptable)

Expert-level understanding of Active Directory architecture, replication, and security; Group Policy design; DNS, DHCP, and name resolution architecture; Windows Server (2016/2019/2022); Azure AD / Entra ID and hybrid identity synchronization

Strong background in PowerShell scripting and infrastructure automation

Demonstrated experience leading enterprise domain projects, including forest restructuring, migration, and modernization

Familiarity with PKI, ADFS, Azure AD Connect, Intune, and MDM policies

Deep understanding of ITIL processes, change management, and cybersecurity compliance frameworks (HIPAA, NIST, SOC 2, etc.)

Excellent leadership, communication, and documentation skills