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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Microsoft 365 & Endpoint Administrator - **Company:** Omni Hotels & Resorts - **Location:** Dallas, TX, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Access, Microsoft Windows, Active Directory, Android Software Development, Apple IOS, Apple Mac Systems, Computing Platforms, Microsoft Online Services, Cyber Security, Integrated Windows Authentication, Multi-Factor Authentication, Windows PowerShell, Role-Based Access Control, Azure Active Directory, Microsoft SharePoint, Software Deployment, Cloud Collaboration, Enterprise Software Applications, Office365, Software Troubleshooting, Microsoft InTune, Microsoft Onedrive, Deployment Automation, Apple Business Manager - **Published:** October 29, 2026 - **Apply:** https://www.hcareers.com/fr/jobs/4378941-sr-microsoft-365-endpoint-administrator ## About the Role * 5-8 years of progressive experience supporting Microsoft enterprise technologies, including hands-on Microsoft 365 and Microsoft Intune administration. * Working knowledge of Microsoft Entra ID, Exchange Online, Teams, SharePoint Online, OneDrive, Microsoft 365 Apps, Windows 10/11, Windows Autopilot, device compliance, and application deployment. * Experience with MFA, Conditional Access, endpoint security, and role-based access control. * Strong troubleshooting, root-cause analysis, documentation, change-management, and organizational skills. * Ability to manage multiple technical initiatives, work independently, and collaborate across IT Support Services, Information Security, Infrastructure, application teams, vendors, and property IT. * Strong customer-service orientation and communication skills appropriate for Omni's hospitality environment. * Hands-on experience administering Active Directory objects, OUs, delegated permissions, and GPOs, including policy troubleshooting and hybrid identity support. Preferred Qualifications * Microsoft O365 certification is required. * Experience supporting a multi-site enterprise, hotel, resort, retail, or other 24x7 customer-service environment. * Experience with Microsoft Graph, Apple Business Manager, Windows Update for Business, and Group Policy migration to modern management. * Experience with vulnerability-management and endpoint-security platforms used in an enterprise environment. * ITIL knowledge or experience with formal incident, problem, change, and request management. * Experience providing technical guidance or coordinating the work of other IT staff. ## Description The Microsoft 365 & Endpoint Administrator administers, secures, supports, and continuously improves Omni Hotels & Resorts' Microsoft 365, Microsoft Intune, Active Directory (AD), and Group Policy environments. This in-office, hands-on role works closely with Infrastructure and IT Security to manage cloud collaboration services, endpoint configuration and compliance, application deployment, and identity-related administration across corporate offices, hotels, resorts, and remote associates. It serves as an escalation resource for IT Support Services and property IT teams and provides day-to-day oversight of one Microsoft 365 Administrator., Microsoft 365 Administration * Administer Exchange Online, Microsoft Teams, SharePoint Online, OneDrive for Business, Microsoft 365 Apps, and related tenant settings. * Manage users, groups, licenses, service configurations, and delegated administrative roles. * Monitor service health and troubleshoot authentication, licensing, mailbox, collaboration, and application issues. Microsoft Intune & Endpoint Management * Administer Microsoft Intune for Omni-managed Windows, macOS, iOS, and Android devices. * Maintain enrollment, configuration, compliance, security, update, and device restriction policies. * Administer Windows Autopilot and standardized provisioning, reassignment, reset, retirement, and decommissioning processes. * Package, test, deploy, update, and retire applications through Intune and Company Portal. * Monitor device health, compliance, deployment results, unsupported operating systems, and stale device records. Active Directory & Group Policy Administration * Administer AD user, group, and computer objects, organizational units (OUs), group membership, and delegated permissions within approved access boundaries; coordinate routine account lifecycle fulfillment with the IT Service Desk. * Troubleshoot domain authentication, account lockouts, domain-join, and hybrid identity synchronization issues in partnership with Infrastructure and Information Security. * Create, configure, test, deploy, and maintain Group Policy Objects (GPOs), including links, scope, security filtering, inheritance, and approved user and computer settings. * Investigate Group Policy processing failures and conflicting settings; maintain policy documentation, backups, and rollback plans through established change control. * Review stale AD objects and outdated or duplicate GPOs; coordinate approved cleanup and migration of applicable settings to Intune while preventing conflicting policy enforcement. Identity, Access & Security * Support Microsoft Entra ID, MFA, Conditional Access, security groups, device registration, and device-based access requirements within assigned responsibilities. * Apply least-privilege, role-based access, separation-of-duties, and documented change-control practices. * Partner with Information Security to remediate endpoint vulnerabilities and implement approved Microsoft 365 and endpoint security controls. Omni Support & Operations * Serve as a technical escalation point for the Omni Service Desk, property IT teams, and other support resources. * Support a geographically distributed, 24x7 hospitality environment where technology availability may directly affect hotel operations, associate productivity, and guest service. * Work closely with Infrastructure and IT Security to coordinate deployments, troubleshoot cross-platform issues, and implement approved changes with minimal disruption across corporate offices, hotels, and resorts. * Create knowledge articles, support procedures, configuration standards, and technical documentation. * Participate in Omni incident, problem, change, request, and major-incident management processes. * Provide scheduled on-call or after-hours support for critical incidents, maintenance, and production changes when required. * Provide day-to-day supervision of one Microsoft 365 Administrator, including work prioritization, technical guidance, and support coverage coordination. Platform Design & Continuous Improvement * Recommend and implement improvements to Omni's Microsoft 365, Intune, Autopilot, and endpoint-management environment. * Develop repeatable standards that improve security, reliability, automation, and the associate technology experience. * Use PowerShell and Microsoft Graph where appropriate to automate administration, reporting, and remediation. * Evaluate new Microsoft capabilities and provide practical recommendations aligned with Omni business and support requirements.