Senior M365 Administrator (Microsoft Office 365)
Tanium · Seattle, WA
📍 Bellevue, WA (Hybrid); Durham, NC (Hybrid); Emeryville, CA (Hybrid)💰 $70,000 to $140,000via greenhousePosted 2026-06-19
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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 full potential of their IT investments. Tanium has been named to the Forbes Cloud 100 list for nine consecutive years and ranks on the Fortune 100 Best Companies to Work For. For more information on The Power of Certainty™, visit www.tanium.com and follow us on LinkedIn and X .
On a mission. Together.
At Tanium, we are stewards of a culture that emphasizes the importance of collaboration, respect, and diversity. In our pursuit of revolutionizing the way some of the largest enterprises and governments in the world solve their most difficult IT challenges, we are strengthened by our unique perspectives and by our collective actions.
We are an organization with stakeholders around the world and it’s imperative that the diversity of our customers and communities is reflected internally in our team members. We strive to create a diverse and inclusive environment where everyone feels they have opportunities to succeed and grow because we know that only together can we do great things.
Each of our team members has 5 days set aside as volunteer time off (VTO) to contribute to the communities they live in and give back to the causes they care about most.
What you’ll get
The annual base salary range for this full-time position is $70,000 to $140,000. This range is an estimate for what Tanium will pay a new hire. The actual annual base salary offered may be adjusted based on a variety of factors, including but not limited to, location, education, skills, training, and experience.
In addition to an annual base salary, team members will receive equity awards and a generous benefits package consisting of medical, dental and vision plan, family planning benefits, health savings account, flexible spending account, transportation savings account, 401(k) retirement savings plan with company match, life, accident and disab
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