Lead System Engineer - M365 & Purview
First seen by Alion on Oct 7, 2026.
Scope:
The Lead System Engineer is a senior technical leader within the Collaboration & Productivity Platforms team responsible for architecting, engineering, securing, automating, governing, and supporting enterprise Microsoft 365 services. This includes Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Microsoft Entra ID, Microsoft Purview, Microsoft 365 Copilot, and associated email security platforms.
The role provides Level 3/4 escalation support, drives platform strategy and governance, leads complex technical initiatives, mentors engineers, establishes engineering standards, and partners with Security, Infrastructure, Legal, HR, and business stakeholders to ensure reliable, secure, and scalable collaboration services across the enterprise.
Our Current Technical Environment:
- Microsoft 365 (Exchange Online, Teams, SharePoint Online, OneDrive)
- Microsoft Entra ID (Azure AD)
- Microsoft Purview (DLP, Information Protection, Retention, eDiscovery)
- Microsoft 365 Copilot
- PowerShell Automation
What You'll Do:
Platform Reliability and Engineering
. Own the design, administration, performance, capacity, security, and lifecycle management of Microsoft 365 collaboration and productivity services.
. Maintain platform health, availability, and scalability while leading the resolution of complex incidents and escalations.
Security, Compliance, and Governance
. Implement and enhance Microsoft Purview capabilities including Data Loss Prevention (DLP), Information Protection, Sensitivity Labels, Retention, Records Management, and eDiscovery.
. Strengthen data governance and email security controls, including SPF, DKIM, and DMARC.
Automation and Operational Excellence
. Develop and maintain automation solutions using PowerShell, Microsoft Graph, Power Automate, and Azure Automation.
. Drive operational efficiency through process standardization, proactive monitoring, self-service capabilities, and continuous improvement initiatives.
Copilot and AI Readiness
. Support Microsoft 365 Copilot governance, data readiness, secure adoption, use-case enablement, and ongoing optimization.
. Partner with stakeholders to ensure responsible and effective adoption of AI-powered productivity solutions.
Technical Leadership and Delivery
. Lead cross-functional projects, architecture reviews, root-cause analysis, platform improvements, and vendor engagements.
. Establish engineering standards, maintain technical documentation, and mentor engineers across the organization.
. Serve as a trusted technical advisor to business, infrastructure, and security stakeholders.
Success Measures
Calibration measures include delivery against commitments, platform reliability, security and compliance improvements, automation outcomes, quality of technical decisions and documentation, stakeholder partnership, incident leadership, and measurable team enablement.
What We Are Looking For:
- 8+ years of enterprise IT engineering experience.
- 5+ years of hands-on Microsoft 365 engineering or administration experience.
- Advanced expertise with Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, and Microsoft Entra ID.
- Experience designing, implementing, and supporting enterprise collaboration platforms.
- Microsoft Purview experience including DLP, Information Protection, Retention, Records Management, or eDiscovery.
- Strong PowerShell automation skills.
- Experience with Microsoft Graph, Azure Automation, or Power Automate.
- Knowledge of SMTP routing, mail flow, SPF, DKIM, and DMARC.
- Strong incident management, troubleshooting, root-cause analysis, and problem management experience.
- Proven ability to lead projects, mentor engineers, and communicate with technical and non-technical stakeholders.
- Willingness to participate in scheduled on-call support rotations
Our Values
If you want to know the heart of a company, take a look at their values. Ours unite us. They are what drive our success - and the success of our customers. Does your heart beat like ours Find out here:
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.