M365 Testing Engineer Lead

We are seeking an experienced M365 Testing Engineer Lead to drive testing strategy, quality assurance, and governance across a complex Microsoft 365 ecosystem. This individual will lead regression testing efforts spanning Exchange Online (EXO), SharePoint, Teams, Microsoft 365 Core Services, Robotics, Client Workstation Packaging, and Microsoft 365 Security & Compliance platforms including Microsoft Defender and Email Routing solutions.

• Define and execute enterprise M365 testing and automation strategies.
• Lead end-to-end regression testing across Exchange Online (EXO).
• Lead end-to-end regression testing across Microsoft Teams.
• Lead end-to-end regression testing across SharePoint Online.
• Lead end-to-end regression testing across Microsoft 365 Core Services.
• Lead end-to-end regression testing across Client Workstation Packaging.
• Lead end-to-end regression testing across Robotics/Automation Platforms.
• Lead end-to-end regression testing across Microsoft Defender.
• Lead end-to-end regression testing across Email Routing & Messaging Infrastructure.
• Translate business, engineering, user experience, security, and compliance requirements into test plans, test cases, and validation criteria.
• Drive test planning, execution, defect management, reporting, and quality metrics.
• Review test results and provide recommendations for release readiness.

• Establish testing governance standards, quality controls, and testing best practices across M365 platforms.
• Partner with Security, Risk, Compliance, and Infrastructure teams to validate security controls and regulatory requirements.
• Ensure testing processes align with organizational governance frameworks, audit requirements, and operational controls.
• Track testing KPIs, quality metrics, defect trends, and compliance reporting.
• Support audit readiness activities through documentation, traceability, and testing evidence collection.

• Define automation frameworks and testing standards.
• Drive common testing tools, frameworks, and reusable automation practices.
• Establish automated regression suites and continuous testing capabilities.
• Oversee test data generation, environment management, and test execution optimization.
• Support continuous testing models through ownership of lower environment testing rings and validation pipelines.

• 5+ years of Quality Assurance, Testing, Automation, or Software Validation experience.
• 3+ years leading enterprise testing programs or QA teams.
• Strong experience testing Microsoft 365 technologies including Exchange Online, Teams, SharePoint, and Microsoft 365 Security solutions.
• Experience designing and implementing testing frameworks and automation strategies.
• Knowledge of Microsoft Defender, security controls, compliance validation, and email routing technologies.
• Experience with defect management, test planning, reporting, and release governance.
• Strong understanding of IT Service Management (ITIL/ITSM) principles.