Senior Microsoft 365 Engineer

About the role

The Microsoft 365 Engineer supports and enhances Microsoft 365 infrastructure for the Cetera Remote Administration program. This program provides full-service managed IT solutions to independent firms within the Cetera network. The role requires managing a multi-tenant Microsoft 365 environment (MTO) and collaborating with IT Operations to resolve complex issues and drive strategic enhancements.

Responsibilities

• Administer and support Microsoft 365 services, including Exchange Online, Entra ID, Defender, Purview, Intune, Teams, OneDrive, and SharePoint Online
• Manage and optimize multi-tenant environments (MTO), including cross-tenant collaboration, identity synchronization, and governance
• Oversee endpoint provisioning and lifecycle management using Intune, Entra ID, and Windows Autopilot
• Provide advanced troubleshooting and escalated support using tools such as PowerShell, Microsoft Graph, and admin portals
• Partner with IT Operations on projects, enhancements, and incident resolution
• Troubleshoot access and cloud service issues, ensuring end-to-end resolution and validation
• Drive platform improvements and changes through structured change management processes
• Maintain detailed documentation and knowledgebase resources

Requirements

• 5+ years of overall IT experience
• 3+ years administering Microsoft 365 at a Global Administrator level
• Hands-on experience across core M365 services (Exchange, Entra ID, Teams, Intune, etc.)
• Experience managing multiple tenants (MTO, MSP, or multi-entity environments)

Preferred Skills & Experience

• Strong experience managing Microsoft 365 native environments (Entra-joined devices, Intune MDM, Autopilot)
• Expertise in cross-tenant access, B2B collaboration, and tenant segmentation (administrative units, scope tags, security groups)
• Solid understanding of email flow and security integrations (e.g., Proofpoint)
• Proficient in PowerShell and automation for administration and troubleshooting
• Strong ownership mindset with the ability to work independently and collaboratively in a fast-paced environment

About Us

We offer a competitive salary and a benefits package including:

• Inclusive health, dental, vision and life insurance plans
• Easy access to mental health benefits
• 20+ days of paid time off (PTO), paid holidays, and 2 paid wellness days
• 401(k) Savings plan with a generous company contribution (up to 5%)
• Paid parental leave
• Health Savings and Flexible Spending Account options
• Employee Assistance Program (EAP), LifeLock, Pet Insurance and more