M365 Platform Lead

3/4/2026

This role serves as the senior subject matter expert for the Microsoft 365 platform, providing strategic direction, operational oversight, and technical leadership across cloud collaboration and productivity services. Responsibilities include supporting and optimizing M365 cloud services, providing architectural guidance, and maintaining operational health, security, and performance.

Salary

130000 - 160000 USD

Working Hours

40 hours/week

Company Size

51-200 employees

Language

English

Visa Sponsorship

About The Company

At R3 everything starts with the customer. It’s our mission to provide the best in class IT, cybersecurity, and governance, risk, & compliance support to enterprise-level businesses. R3 has created a proven track record of providing exceptional performance and the level of customer support you expect from your own company. Our approach is simple; make sure that every client interaction with R3 delivers value and provides a solution to a problem. Every client’s needs are different so at R3 we take a consultative approach so that the proper resources are allocated to meet your needs. The R3 staff has more than 50 years of IT experience working with clients across many verticals including Law Firms, Financial, Healthcare, and Construction to name a few. Our service offering spans across the technology spectrum to include the design, management, and support of your IT infrastructure and operations. It’s all about accountability at R3 and we hold every member of the team accountable to make sure that they're making our clients operate more efficiently and effectively through the technology and support we provide. Specialties: Customer service, Network Support, Technical Projects, IT Security (data security, firewall, compliance, HIPAA, audit, risk management, etc.), Cloud Computing and Services, Disaster Recovery, Data Center Operations, IT Staff Augmentation, Help Desk, and IT Consulting.

About the Role

Description

R3 is seeking an experienced M365 Platform Lead to oversee and support a dedicated Microsoft 365 environment. This role serves as the senior subject matter expert for the Microsoft 365 platform, providing strategic direction, operational oversight, and technical leadership across cloud collaboration and productivity services.

The M365 Platform Lead will translate organizational objectives into secure, scalable, and well-governed Microsoft 365 solutions while ensuring platform stability, performance, and continuous modernization. This position requires a strong blend of architecture expertise, operational ownership, and leadership capability within a structured enterprise environment.

Responsibilities

Serve as the technical lead and subject matter expert for the Microsoft 365 platform
Support and optimize M365 cloud services including Exchange Online, SharePoint Online, OneDrive for Business, and the Power Platform
Translate business goals and operational drivers into secure, scalable, and well-architected M365 solutions
Provide architectural guidance and best practices for M365 design, configuration, governance, and lifecycle management
Maintain the operational health of the M365 environment including security, availability, performance, interoperability, and reliability
Oversee identity integration, access controls, conditional access policies, and data protection strategies
Ensure alignment with applicable security frameworks and compliance requirements
Lead platform upgrades, feature rollouts, tenant configurations, and service enhancements
Stay current on Microsoft 365 roadmap changes, new releases, and emerging capabilities, advising leadership on impact and opportunity
Provide escalation support for complex M365-related incidents and service disruptions
Develop and maintain documentation, governance standards, and operational procedures
Mentor and guide engineers and administrators supporting the M365 ecosystem
Participate in strategic planning discussions and long-term platform modernization initiatives

Requirements

Required Qualifications

Bachelor’s degree in Information Technology, Computer Science, or related field
10–15 years of progressive technical experience in enterprise IT environments
Significant hands-on experience supporting Microsoft 365 cloud services including Exchange Online, SharePoint Online, OneDrive, and Power Platform
Demonstrated experience leading or managing technical teams
Strong understanding of enterprise cloud architecture, identity management, and security best practices
U.S. Citizenship required

Preferred Qualifications

Active or previous DoD Secret or Top Secret clearance
DOE L or Q clearance
Experience operating within highly regulated or compliance-driven environments
Experience working within a managed services delivery model

Certifications Desired

Microsoft 365 Certified Enterprise Administrator Expert
Microsoft Certified Azure Solutions Architect Expert
Microsoft Security certifications
Relevant cloud, security, or compliance certifications

Key Competencies

Deep Microsoft 365 platform expertise
Strong architectural and systems thinking capability
Ability to balance strategic planning with operational ownership
Effective leadership and mentorship skills
Excellent written and verbal communication skills
Strong documentation and governance discipline
Proactive, forward-thinking mindset focused on modernization and continuous improvement

Why join our winning team?

Competitive wages to reflect your experience and skills.
Comprehensive medical, dental, and vision insurance plans to keep you and your family healthy.
401(k) with company match to help you plan for the future.
Flexible time off policies to ensure you maintain a healthy work-life balance.
We are committed to creating a positive impact on society and contributing to a better world--we're involved in our community and encourage our employees to do the same.
We are reshaping the industry and the way it thinks about technology and service.
We strive to be better and encourage our employees to do the same by offering training incentives and bonuses to help you and your career grow.
The opportunity to be a part of an amazing team.

The salary range is : $130k-160k

The base range for this position is an estimate and may vary depending on relevant factors, including but not limited to education, experience, certifications, and skillset, as well as internal equity and business considerations. This range reflects base pay only and does not include bonuses, incentives, benefits, or other forms of compensation that may be offered as part of the total compensation package.

R3 is an equal opportunity employer. It has been and will continue to be a fundamental policy of R3 to not discriminate on the basis, of race, color, religion, gender, gender identity, pregnancy, marital status, sexual orientation, age, national origin, alienage or citizenship status, veteran or military status, disability, medical condition, genetic information, or any other characteristic prohibited by federal, state, and/or local laws. This policy applies to all aspects of employment, including hiring, promotion, demotion, compensation, training, working conditions, transfer, job assignment, benefits, and termination.

Key Skills

Microsoft 365 PlatformExchange OnlineSharePoint OnlineOneDrive for BusinessPower PlatformArchitectureGovernanceIdentity ManagementAccess ControlsData ProtectionSecurity FrameworksCompliancePlatform UpgradesTenant ConfigurationTechnical LeadershipMentorship