Senior M365 Administrator (Microsoft Office 365)

The Basics We are seeking a highly skilled Collaboration Administrator with expertise in Microsoft 365 (M365), SharePoint, Exchange Online, Teams, and Slack to join the Identity and Collaboration team at Tanium. The ideal candidate will be a self-directed problem-solver who thrives in a fast-moving environment, adapts to shifting priorities, and drives work forward independently. This position follows the Company’s hybrid schedule which currently requires employees to work in the office at one of the following locations a minimum of three days per week: Bellevue, WA; Durham, NC; or Emeryville, CA What you'll do Administration and management of M365, Entra, SharePoint, Slack, Exchange Online, Teams Lead or participate in projects related to collaboration tools, identity, and M365 Provide technical support and guidance to end-users, resolving complex issues related to M365, Identity, and Slack Manage permissions and access controls across platforms to ensure security and compliance Manage and secure Enterprise Apps and App Registrations Maintain comprehensive documentation of system configurations, processes, and procedures Develop and deliver training to educate the larger IT team or employees on the effective use of collaboration tools Stay informed of upcoming changes that Microsoft is releasing to the M365 stack and take proactive action when needed Work closely with other IT teams, business units, and stakeholders to ensure alignment of collaboration solutions with business objectives Partner with vendors and service providers as needed, ensuring timely support and resolution of issues Effectively communicate technical concepts and solutions to non-technical stakeholders, fostering a collaborative and productive working environment Participate in incident response efforts related to collaboration systems, including investigation, mitigation, and reporting of security incidents We’re looking for someone with Education Bachelor's Degree in Computer Science, IT, or other relevant degree or equivalent work experience Required Experience 5 years of experience with Microsoft 365 with at least 2 years in designing, implementing, and managing Entra and collaboration solutions Expertise in Entra and Microsoft 365 (M365) administration and configuration Configuration of Enterprise Applications, App Registration, SSO, and provisioning Experience using Graph API PowerShell for automation and administration Proficiency in Active Directory, Entra ID, and IAM principles In-depth knowledge of SharePoint architecture, customization, and administration Comprehensive understanding of Microsoft Teams management and troubleshooting Proficiency in Exchange Online administration Understanding of email authentication and security best practices Familiarity with MS Purview and MS Defender Prior involvement with CAB/Change Management Preferred Experience Experience with Slack administration and integrations Hands on experience with PowerAutomate Experience with Azure Automation Understanding of Copilot integrations within M365 ecosystem Prior experience in a similar role within a rapid-growth enterprise Project management experience using tools like Jira Familiarity with FedRAMP/NIST/CMMC Compliance Notion Administration Knowledge of mobile device management (MDM) and mobile application management (MAM) via Intune About Tanium Tanium delivers the industry's only true real-time cloud-based endpoint management and security offering. Its platform is real-time, seamless, and autonomous, allowing security-conscious organizations to break down silos between IT and Security operations that results in reduced complexity, cost, and risk. Securing more than 32M endpoints around the world, Tanium's customers include Fortune 100 organizations, top US retailers, top US commercial banks, and branches of the U.S. Military. It also partners with the world's biggest technology companies, system integrators, and managed service providers to help customers realize the