Senior M365 Administrator (Microsoft Office 365)

About the role

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.

Responsibilities

• 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
• 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
• 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

Requirements

EducationBachelor's Degree in Computer Science, IT, or other relevant degree or equivalent work experience

Required Experience5 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