Senior SharePoint Online & M365 Admin

Core Specialty Insurance Holdings, Inc.; Cincinnati (OH); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

401(k) matching

Job summary

Core Specialty Insurance Holdings, Inc. is seeking a Senior SharePoint Administrator to lead delivery, administration, and continuous improvement of enterprise collaboration services, primarily SharePoint Online within Microsoft 365.

You will serve as a senior operational resource, owning architecture, governance, and service health, while mentoring junior staff and coordinating with cross-functional teams to resolve escalated issues.

Qualifications

• Bachelor Degee in Computer Science or Engineering or equivalent work experience.
• 5+ years of experience in an IT operations or systems administration role with direct responsibility for SharePoint Online in Microsoft 365 or Office 365 environments
• Demonstrated experience supporting end users on collaboration platform issues and requests in an enterprise environment
• Experience planning and executing SharePoint migrations (file shares, legacy SharePoint versions, or tenant-to-tenant)
• Experience working within Agile or Kanban-based team workflows, participating in sprint planning, stand-ups, or similar structured delivery cadences
• Track record of maintaining accurate documentation and contributing to knowledge base articles or operational runbooks

Responsibilities

• Administer and support day-to-day operations of SharePoint Online and OneDrive, plus related Microsoft 365 services including Exchange Online, Teams, and other collaboration tools
• Own SharePoint Online architecture and governance, including site provisioning standards, permissions models, information architecture, and site lifecycle management
• Monitor service health across M365 workloads, respond to alerts, and coordinate with Microsoft support on service incidents and degradations
• Manage user and group provisioning, licensing assignments, and access reviews within Entra ID (Azure Active Directory) in alignment with IT policy
• Serve as the escalation point for tier-2 and tier-3 collaboration service requests and incidents, ensuring timely resolution and clear communication with end users
• Maintain documentation for service configurations, operational runbooks, known issues, and standard procedures
• Support the onboarding and offboarding of users across M365 services, including mailbox provisioning, Teams membership, and SharePoint site access
• Lead the rollout of new SharePoint and M365 features and updates, coordinating testing and communicating changes to stakeholders
• Drive continuous improvement efforts by identifying recurring issues, service gaps, and opportunities for automation or process optimization
• Mentor junior administrators and helpdesk staff on SharePoint support practices and escalation handling
• Support Microsoft 365 Copilot enablement, including SharePoint content readiness, permissions hygiene, and oversharing controls

Skills

SharePoint Online

IT operations

End-user support

Agile Kanban

PowerShell

Documentation

Education

Bachelor in Computer Science or Engineering or equivalent work experience

Tools

ServiceNow

Jira Service Management

PnP PowerShell

Exchange Online PowerShell

Microsoft Graph API

MS 365 Admin Center

Intune

Job description

Core Specialty Insurance Holdings, Inc. is seeking a Senior SharePoint Administrator to lead delivery, administration, and continuous improvement of enterprise collaboration services, primarily SharePoint Online within Microsoft 365.

You will serve as a senior operational resource, owning architecture, governance, and service health, while mentoring junior staff and coordinating with cross-functional teams to resolve escalated issues.