Senior Microsoft 365 Administrator

Role Overview

• Serve as primary owner of the Microsoft 365 tenant across Entra ID, Intune, Defender, Exchange, SharePoint, and Teams.
• Design and implement scalable architecture aligned to Microsoft best practices.
• Establish governance standards, configuration baselines, and technical documentation.
• Develop and execute a roadmap that supports rapid growth and acquisition integration.
• Architect and manage identity services for approximately 12,000 users, including Conditional Access, MFA, RBAC, and lifecycle governance.
• Own Intune management for approximately 6,000 endpoints, including compliance policies, patching, device configuration, and automation.
• Lead Microsoft Defender configuration and optimization in partnership with the MSSP.
• Improve overall security posture through Zero Trust principles, access controls, and continuous hardening.
• Administer and govern Exchange Online, SharePoint Online, and Teams.
• Establish standards for external sharing, retention, data protection, and collaboration governance.
• Improve stability, performance, and user experience across communication platforms.
• Operate within an ITIL-based change management framework and maintain audit-ready documentation.
• Provide technical leadership and mentorship to a small internal team.
• Serve as senior escalation point for Microsoft 365 engineering issues.
• Direct and manage MSP and MSSP partners to ensure alignment with security, service, and performance expectations.
• Drive operational maturity within a fast-growing and evolving IT control environment.

Requirements

• 8+ years of progressive experience administering and engineering Microsoft 365 environments in mid to large scale organizations.
• Deep hands-on expertise across Entra ID, Intune, Microsoft Defender, Exchange Online, SharePoint Online, and Teams.
• Experience supporting environments with 5,000+ endpoints and 10,000+ users.
• Proven success designing Conditional Access, MFA, RBAC, device compliance, and Zero Trust security architectures.
• Experience operating within an ITIL-based change management framework and building operational governance.
• Demonstrated ability to lead technical initiatives, mentor small teams, and manage MSP or MSSP partners.
• Bachelor’s degree in Information Technology, Computer Science, or related field, or equivalent practical experience.
• Microsoft 365 certification such as Enterprise Administrator Expert, Security Administrator Associate, or Endpoint Administrator Associate.
• 8+ years of hands-on experience administering and engineering Microsoft 365 environments, including Entra ID, Intune, Defender, Exchange Online, SharePoint, and Teams.

Benefits

• Medical, dental, and vision coverage
• competitive PTO and sick leave
• paid holidays
• 401(k) with company match