Senior Infrastructure Engineer
Job in
Dallas, Dallas County, Texas, 75215, USA
Listed on 2026-05-27
Listing for:
Cetera Financial Group, Inc.
Full Time
position Listed on 2026-05-27
Job specializations:
-
IT/Tech
IT Support, Cloud Computing, Cybersecurity, Systems Administrator
Job Description & How to Apply Below
Cetera is seeking a Microsoft 365 Engineer to support and enhance Microsoft 365 infrastructure for our Remote Administration program. This program delivers full-service managed IT solutions to independent firms within the Cetera network.
In this role, you will serve as a subject matter expert and Global Administrator, managing a multi-tenant Microsoft 365 environment (MTO) while ensuring reliability, security, and continuous improvement of the platform. You will also partner closely with IT Operations to resolve complex issues and drive strategic enhancements.
Key Responsibilities:
Administer and support Microsoft 365 services, including Exchange Online, Entra , Defender, Purview, Intune, Teams, One Drive, 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 , and Windows Autopilot
Provide advanced troubleshooting and escalated support using tools such as Power Shell, 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
Required Qualifications:
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 , 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 Power Shell and automation for administration and troubleshooting
Strong ownership mindset with the ability to work independently and collaboratively in a fast-paced environment
#LI-Hybrid
Position Requirements
10+ Years
work experience
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