Senior System Administrator

As a subject matter expert for Rush Enterprises' enterprise identity, cloud administration, and systems infrastructure, you will administer Active Directory, Azure AD/Entra ID, Identity and Access Management (IAM), and Microsoft 365 administration. You will mentor other Systems Engineers and serve as an escalation point for complex identity and infrastructure incidents.

Responsibilities

• Administer and maintain Active Directory, including Group Policy Objects (GPO) and Organizational Unit (OU) structure, ensuring consistent design and documentation across the environment.
• Own day-to-day administration of Azure AD/Entra ID, including conditional access, single sign-on (SSO), Privileged Identity Management (PIM), and multi-factor authentication (MFA) configuration.
• Administer Identity and Access Management (IAM) capabilities including Privileged Access Management (PAM) and Role-Based Access Control (RBAC).
• Administer Microsoft 365, including licensing, tenant configuration, and platform administration across the organization.
• Provide senior-level troubleshooting and root-cause analysis for complex systems, identity, and access incidents, escalating only the most unusual issues.
• Design, document, and maintain runbooks, architecture diagrams, and standard operating procedures for identity and systems administration functions.
• Partner with the security team to implement and enforce identity governance, access control, and compliance requirements.
• Mentor and cross-train Systems Engineers and Associate-level staff to build depth across identity, Azure, and M365 capabilities and reduce concentration risk on any one person.
• Participate in the planning and execution of systems and identity-related changes, upgrades, and migrations following change management processes.
• Support disaster recovery and business continuity planning for identity and core systems infrastructure.
• Participate in on-call rotations and after-hours maintenance windows.

Requirements

• 5–8 years of progressive experience in systems administration, with demonstrated depth in Active Directory, Azure AD/Entra ID, and Microsoft 365 administration.
• Bachelor's degree in Information Technology, Computer Science, or a related field. Additional experience and/or technical training may be considered in lieu of formal education.
• Advanced knowledge of Active Directory (GPO, OU design), Azure AD/Entra ID, and IAM disciplines including PAM, RBAC, SSO, PIM, and MFA.
• Strong Microsoft 365 administration and licensing experience.
• PowerShell or equivalent scripting for administration and automation preferred.

Relevant certifications (e.g., Microsoft Certified: Identity and Access Administrator Associate, Microsoft 365 Certified: Administrator Expert, AZ-104/AZ-500) are strongly preferred.

Benefits

• Outstanding healthcare benefits.
• Robust 401(k) plan with company matching.
• Employee stock purchase program.
• Performance-based incentives.
• Opportunities for professional growth through ongoing training and development.

Pay

Minimum Pay Rate: USD $100,000.00/Yr.
Maximum Pay Rate: USD $140,000.00/Yr.