Senior M365 Administrator (Microsoft Office 365)

tanium

Addison, TX (Hybrid); Bellevue, WA (Hybrid); Durham, NC (Hybrid); Emeryville, CA (Hybrid); Reston, VA (Hybrid) · Addison · VA (Hybrid)

Posted Jun 16, 2026

Full-time
Hybrid
IT Support

Apply on company site

Job description

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 disability coverage, business travel accident insurance, employee assistance programs, disability insurance, and other well-being benefits.

For more information on how Tanium processes your personal data, please see our Privacy Policy.

Tanium is an Equal Opportunity and Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, gender identity, sexual orientation, disability, protected Veteran status, or other legally protected categories. If you require a reasonable accommodation in searching for a job opening, completing an application, interviewing, or completing any pre-employment testing or requirements, please contact accommodations@tanium.com. For more information refer to the “Know Your Rights” poster which is available here - https://www.eeoc.gov/poster.

Please be aware of job offers coming from people claiming to be Tanium employees. Tanium employees will only use @tanium.com email addresses to communicate with you, will have video interviews with you, and will never ask you for money.

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For more information on how Tanium processes your personal data, please see our Privacy Policy.