Senior Microsoft 365 Platform Lead (Hybrid)

Vanguard; Scottsdale (AZ); Hybrid; USD 120,000 - 150,000; Full time

Benefits offered by this job

Health coverage

Retirement plans

Paid time off

Wellness programs

Continuous learning

Job summary

Vanguard is seeking a Microsoft 365 Platform Administrator to design, implement, and support enterprise collaboration services across the Microsoft 365 ecosystem. This senior role shapes platform services in a secure, high-performance environment and partners with security, networking, and identity teams to drive reliable patterns and resilient operations.

The role emphasizes architecture leadership, modernization roadmaps, and cross-team collaboration to improve user experience and operational

Qualifications

• Eight+ years of related IT experience with emphasis on Microsoft 365 architecture.
• Experience administering and troubleshooting Microsoft 365 suite (Exchange, SharePoint, Teams, OneDrive).
• Strong knowledge of security, compliance, governance, identity and access management (OKTA, Azure AD).
• Ability to design, implement, and operate enterprise collaboration platforms in regulated environments.

Responsibilities

• Design and maintain enterprise architecture for Microsoft 365 and unified communications services (Exchange, SharePoint, Teams, OneDrive, Office365).
• Lead modernization initiatives and define future-state roadmaps aligned with business goals.
• Implement advanced security configurations and governance policies (Conditional Access, Defender, DLP, MIP, MFA, Zero Trust).
• Develop and maintain runbooks to support Tier 2 teams.
• Create scripting and automation to streamline tasks (PowerShell, Python, Graph API).
• Lead end-to-end implementation projects from requirements to production rollout and handoff.
• Troubleshoot complex issues across endpoints, identity, networking, cloud services and tenant integrations.
• Mentor junior engineers and communicate with stakeholders during outages and changes.

Skills

Microsoft 365 architecture

Security governance

Identity & access management

Troubleshooting

Leadership

Documentation

Scripting (PowerShell, Python)

Education

Bachelor's degree

Tools

PowerShell

Graph API

Azure AD

Defender

Office 365 admin tools

Job description

Vanguard is seeking a Microsoft 365 Platform Administrator to design, implement, and support enterprise collaboration services across the Microsoft 365 ecosystem. This senior role shapes platform services in a secure, high-performance environment and partners with security, networking, and identity teams to drive reliable patterns and resilient operations.

The role emphasizes architecture leadership, modernization roadmaps, and cross-team collaboration to improve user experience and operational