Senior Microsoft 365 Administrator
Apex Service Partners
full-time
Posted on:
Location Type: Office
Location: Tampa • Florida • United States
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Job Level
About the role
- 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
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Microsoft 365Entra IDIntuneMicrosoft DefenderExchange OnlineSharePoint OnlineTeamsConditional AccessMFARBAC
Soft Skills
technical leadershipmentorshipteam managementoperational maturitygovernancecommunication
Certifications
Microsoft 365 Enterprise Administrator ExpertMicrosoft 365 Security Administrator AssociateMicrosoft 365 Endpoint Administrator Associate