Senior Microsoft 365 (O365) Engineer

Description

Location: Remote (Texas based) / San Antonio, TX (Preferred for periodic onsite collaboration)
Department: Productivity & Collaboration Services
Reports To: Microsoft Services Manager / Infrastructure Lead
Employment Type: Full-Time

Position Summary:

We are seeking a seasoned and highly skilled Senior Microsoft 365 (O365) Engineer to lead the design, implementation, and optimization of enterprise collaboration services across a network of 70 hospitals. This role is responsible for architecting, managing, and securing the Microsoft 365 environment, ensuring scalability, compliance, and best-in-class user experience.

The ideal candidate will have deep expertise across the M365 suite—Exchange Online, Teams, SharePoint, OneDrive, and Intune—and a proven track record supporting large, distributed enterprise environments, ideally in healthcare or other regulated industries.

Key Responsibilities:

Architecture & Strategy

• Led the design and implementation of Microsoft 365 services including tenant configuration, Exchange Online, Microsoft Teams, OneDrive, SharePoint Online, Intune, and Azure AD.
• Define and enforce governance, security, compliance, and lifecycle policies across the M365 ecosystem.
• Serve as a subject matter expert in migrations, integrations, and hybrid scenarios involving legacy environments.

Operations & Support

• Provide Tier 3 support for escalated issues related to M365 services.
• Monitor and optimize performance, availability, and storage across Exchange Online, Teams, and SharePoint.
• Maintain and enhance automation scripts for routine tasks and service administration (PowerShell, Graph API).

Security & Compliance

• Implement and manage data protection strategies including DLP, sensitivity labels, retention policies, and audit logging.
• Support MFA, Conditional Access, and secure mobile access via Intune and Microsoft Defender for Endpoint.
• Assist with regulatory compliance initiatives including HIPAA, HITRUST, and internal audit requirements.

Collaboration & Mentorship

• Mentor junior O365 engineers and support staff, driving best practices and technical training.
• Collaborate with infrastructure, identity, security, and service desk teams to ensure seamless service delivery.
• Develop and maintain detailed documentation, including runbooks, diagrams, and knowledge base content.

Requirements

Required Qualifications:

• 5+ years of experience in Microsoft 365 engineering roles in a large enterprise environment.
• Expertise in Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Azure AD, and Intune.
• Strong proficiency in PowerShell scripting and Microsoft 365 administrative tools.
• Experience in hybrid environments with Azure AD Connect and Exchange Hybrid setups.
• Deep understanding of M365 security, compliance, and governance capabilities.
• Familiarity with ITSM systems (e.g., ServiceNow) and change control practices.
• Must be U.S.-based and authorized to work without sponsorship.

Preferred Qualifications:

• Certifications:
  • Microsoft 365 Certified: Enterprise Administrator Expert (MS-100 / MS-101)
  • Microsoft 365 Certified: Messaging Administrator, Teams Admin, or Security Administrator
  • ITIL® Foundation Certificate in IT Service Management
• Education:
  • Bachelor’s Degree in Information Technology, Computer Science, or a related field.
• Additional Experience:
  • Healthcare IT experience or knowledge of HIPAA compliance.
  • Experience with multi-tenant environments or large-scale mergers/migrations.

Work Environment:

• Remote role with preferred proximity to San Antonio, TX for occasional collaboration or client-facing sessions.
• This may include participation in after-hours maintenance windows or on-call rotations for critical incident support.
• Fast-paced, collaborative environment supporting business-critical communication and productivity platforms.